Brother RH-9820 Service Manual

RH-9820 Please read this manual before making any adjustments. ELECTRONIC EYELET BUTTON HOLER SERVICE MANUAL

RH-9820 1. MACHINE SPECIFICATIONS 1 1. MACHINE SPECIFICATIONS Lower thread trimmer Thread trimmerLong type Short type -00 O - - -01 O O - -

6. ASSEMBLY RH-9820 91A Install the wicks as shown in the illustration.

6. ASSEMBLY RH-9820 926-12. Spreader mechanism * Refer to the detailed descriptions on the next page for details on A and B in the illustration. *

6. ASSEMBLY RH-9820 93A Install the wicks as shown in the illustration. B Align the top of the spreader link b

6. ASSEMBLY RH-9820 946-13. Upper thread trimmer mechanism * Install in the positions shown in the illustration.

6. ASSEMBLY RH-9820 956-14. Threading mechanism * Apply the grease specified by Brother (MOLYKOTE LONGTERM W2 manufactured by Dow Corning Corporatio

6. ASSEMBLY RH-9820 96 1. 2 pedal thread guide pipe 2. Screws [2 pcs] 3. Pipe clamp plate 4. Screws [2 pcs] 5. Thread guide pipe 6. Thread gui

6. ASSEMBLY RH-9820 976-15. Feed base mechanism * Refer to the detailed descriptions on pages 102 and 103 for details on A to K in the illustration.

6. ASSEMBLY RH-9820 98 1. Retaining ring C [4 pcs] 2. Ball bearings [4 pcs] 3. Retaining ring C [4 pcs] 4. Retaining ring C 5. Ball bearing 6. R

6. ASSEMBLY RH-9820 99Routing the air tubes and harnesses <-00 specifications> The air tubes and harnesses are numbered as shown in the illustr

6. ASSEMBLY RH-9820 100Routing the air tubes and harnesses <-01 specifications> The air tubes and harnesses are numbered as shown in the illust

2. FUNCTION SETTINGS 2 RH-98202. FUNCTION SETTINGS 2-1. List of special functions when power is turned on This section contains a list of functions

6. ASSEMBLY RH-9820 101Routing the air tubes and harnesses <-02 specifications> The air tubes and harnesses are numbered as shown in the illust

6. ASSEMBLY RH-9820 102 A Turn the feed base (a) upside down. Place the four retaining rings C (1) onto one side of the four ball bearings (2), then

6. ASSEMBLY RH-9820 103 G Set the clamp lever shaft (10) so that the amount of protrusion at the end is as shown in the illustration, then assemble

6. ASSEMBLY RH-9820 1046-15-2. X feed shaft holder * Refer to the detailed descriptions on pages 105 and 106 for details on A to D in the illustrati

6. ASSEMBLY RH-9820 105 A 1) Apply adhesive (Threebond 1373B) to the four ball bearings (1). 2) Insert the four ball bearings (1) into t

6. ASSEMBLY RH-9820 106 C 1) Place the feed base unit onto the bed. 2) Insert the Y feed guide shaft (16) on the left side into the hole (d) in t

6. ASSEMBLY RH-9820 1076-16. X feed mechanism * Refer to the detailed descriptions on the next page for details on A to C in the illustration. * Ap

6. ASSEMBLY RH-9820 108 A Assemble as shown in the illustration. B Place the pulse motor X assembly (10) against the idler gear (4) so th

6. ASSEMBLY RH-9820 1096-17. Lower thread tension mechanism * Refer to the detailed descriptions on the next page for details on A in the illustrati

6. ASSEMBLY RH-9820 110 [-00 and -02 specifications only] 1. Spring pin 2. Stopper 3. Lower thread release plate 4. Spring 5. Retaining ring C 6.

2. FUNCTION SETTINGS 3 RH-98202-2. List of advanced functions This section contains a list of advanced functions and the key operations which are us

6. ASSEMBLY RH-9820 1116-18. Upper shaft motor mechanism * Refer to the detailed descriptions on pages 112 to 114 for details on A to C in the illus

6. ASSEMBLY RH-9820 112 A Install so that the cord (a) is in the position shown in the illustration. B Align the screw at the front of th

6. ASSEMBLY RH-9820 113 <If the belt (upper shaft - lower shaft) is installed> 1) Remove the face plate (l) and the rubber cap (m), and then

6. ASSEMBLY RH-9820 114 7) Provisionally screw in the two remaining socket bolts with washers (g) at the back of the machine head until they are al

6. ASSEMBLY RH-9820 1156-19. Covers 1064B

6. ASSEMBLY RH-9820 1161. Cam cover 2. Screws [3 pcs] 3. Needle guide cover 4. Screws [4 pcs] 5. Main plate 6. Screws [4 pcs] 7. Eye guard assem

6. ASSEMBLY RH-9820 1176-20. Work clamp plate mechanism * Refer to the detailed descriptions on pages 119 and 120 for details on A to D in the illus

6. ASSEMBLY RH-9820 118 1. Opening slide block 2. Slide block support plate 3. Screws [2 pcs] 4. Needle plate L 5. Flat screws [2 pcs] 6. Clamp

6. ASSEMBLY RH-9820 119 A Cloth work clamp L sideways position adjustment 1) Set so that the clearance between the clamp shaft holder (6) and clam

6. ASSEMBLY RH-9820 120 C Cloth work clamp R sideways adjustment 1) Set so that the clearance between the clamp shaft holder (31) and clamp lever

2. FUNCTION SETTINGS 4 RH-98202-3. Memory switch setting method (Advanced) The settings for the memory switches are valid for all programs. 1 While

6. ASSEMBLY RH-9820 1216-21. Lower thread trimming mechanism <-01 specifications> * Refer to the detailed descriptions on pages 123 and 124 fo

6. ASSEMBLY RH-9820 122 1. Bush thread trimmer arm 2. Screws [2 pcs] 3. Nut 4. Spring hook 5. Screws [2 pcs] 6. Roller 7. Retaining ring 8. Thre

6. ASSEMBLY RH-9820 123 A Spring hook installation 1) Provisionally tighten the nut (3) about halfway onto the spring hook (4). 2) Install the sprin

6. ASSEMBLY RH-9820 124D Insert the end of the opener spring (29) into the notch (c) of the thread nipper opener (27). E Install all part

6. ASSEMBLY RH-9820 125<-02 specifications> * Refer to the detailed descriptions on the next page for details on F and G in the illustration.

6. ASSEMBLY RH-9820 126 1. Knife support washer 2. Flat screws [2 pcs] 3. Bush thread trimmer arm 4. Screws [2 pcs] 5. Nut 6. Spring hook 7. Scr

6. ASSEMBLY RH-9820 1276-22. Upper cover mechanism (upper thread tension release and upper thread take-up mechanisms and upper thread path) * Refer

6. ASSEMBLY RH-9820 128 1. Cylinder assembly 2. Cylinder joint A 3. Cylinder setting plate A 4. Screws [2 pcs] (Temporarily tighten) 5. Thread

6. ASSEMBLY RH-9820 1296-23. Routing the harnesses Route the harnesses from the various parts in the order shown in the table below.

6. ASSEMBLY RH-9820 130 Routing order Part name 1 2 3 4 5 6 7 8 9 Gimp thread solenoid [C] [E] <12>

2. FUNCTION SETTINGS 5 RH-98202-4. List of memory switch settings Memory switches which have a “*” in the default value column (050, 752, 850, 851,

6. ASSEMBLY RH-9820 1316-24. Routing the air tubes Cutter cylinder Insert the air tubes (No. 5 and No. 6) of the cutter cylinder (a) into the elbows

6. ASSEMBLY RH-9820 132 Valve unit 1) Pass the air tube (No. 1) of the valve unit (e) from the side marked with “1” into the hole in the side of the

6. ASSEMBLY RH-9820 133 Upper tension release cylinder Pass the air tube (i) for the upper tension release cylinder through the hole in the arm and o

6. ASSEMBLY RH-9820 134 Securing the air tubes Secure the air tubes and the harnesses with the cord holders (k) (2 places). Tubes and harn

6. ASSEMBLY RH-9820 1356-25. Lubrication and greasing and routing the oil tubes * <1> to <8> should be done before carrying out the asse

6. ASSEMBLY RH-9820 136 <1> Oil tube <2> Felt assembly (Attach with glue) <3> Tube guide <4> Socket bolt <5> Wick <

6. ASSEMBLY RH-9820 137 C Cord holder (20) installation 1) Install the cord holder (20) so that the side with the wider hook is on the right as sho

6. ASSEMBLY RH-9820 138 F Installing the lower shaft cover assembly 1) Pass the oil tube (43) through the hole (f) in the lower shaft cover assemb

6. ASSEMBLY RH-9820 139I 1) Insert the wicks (46) and (47) into the hole in the bed as far as they will go. 2) Push the two felts (48) int

6. ASSEMBLY RH-9820 140 J 1) Pass the thicker oil tube (l) through the underside of the bed. 2) Pass the oil tube (l) through the hole (m),

2. FUNCTION SETTINGS 6 RH-9820Work clamp settings No. Setting range Setting items Default value Sewing machine starting procedure * This is not over

7. ADJUSTMENTS RH-9820 141 7. ADJUSTMENTS CAUTION Maintenance and inspection of the sewing machine should only be carried out by a qualified technici

7. ADJUSTMENTS RH-9820 142Looper height Adjust so that the positions of the eye looper (8) and the looper R (9) are as follows. • The

7. ADJUSTMENTS RH-9820 143 7-3. Adjusting the zigzag base line position Preparing a short customized needle Prepare a short needle as described bel

7. ADJUSTMENTS RH-9820 144Adjusting the zigzag base line position The zigzag base line is on the inside of the zigzag. If you change the zigzag wid

7. ADJUSTMENTS RH-9820 145 <Zigzag base line position adjustment> 9. Remove the face plate (8), and then loosen the socket bolt (9).

7. ADJUSTMENTS RH-9820 1467-4. Adjusting the needle and looper timing NOTE: The needle bar moves through two needle drop cycles for each single turn

7. ADJUSTMENTS RH-9820 147 7-5. Adjusting the looper stroke The standard looper stroke is 2.7 mm. (It may be preferable to change this depending on t

7. ADJUSTMENTS RH-9820 1487-6. Adjusting the height of the needle bar The standard height for the needle bar is 2.5 mm. (It may be preferable to chan

7. ADJUSTMENTS RH-9820 149 7-7. Adjusting the clearance between the loopers and needle If the needle count has been changed, always be sure to check

7. ADJUSTMENTS RH-9820 1507-9. Adjusting the spreader installation positions 1. Loosen the set screw (4) and adjust

2. FUNCTION SETTINGS 7 RH-9820Upper shaft control settings No. Setting range Setting items Default value Needle up stop when operation is paused OFF

7. ADJUSTMENTS RH-9820 151 7-10. Adjusting the spreader timing Spreader R (1) (at inside sewing position) and spreader L (2) (at outside sewing posit

7. ADJUSTMENTS RH-9820 1527-11. Adjusting the height of the throat plate

7. ADJUSTMENTS RH-9820 153 7-12. Changing the cutting length (Replacing the hammer) The cutting length is determined by the length of the hammer. Fil

7. ADJUSTMENTS RH-9820 1547-13. Adjusting the cutting surface of the hammer <Adjustment procedure> 1. Remove the hammer. (Refer to the previou

7. ADJUSTMENTS RH-9820 155 7-13-2. Adjusting the contact between the knife and the hammer The knife incision can be seen more clearly if the cutting

7. ADJUSTMENTS RH-9820 1567-15. Making the cutter driving shaft and driving shaft presser move together The cutter driving shaft (2) and driving shaf

7. ADJUSTMENTS RH-9820 157 7-16. Replacing the knife and adjusting its position 7-16-1. Replacing the knife CAUTION Do not operate the sewing machin

7. ADJUSTMENTS RH-9820 1587-16-2. Making fine adjustments to the knife position Adjust the knife position so that it cuts the material cleanly at the

7. ADJUSTMENTS RH-9820 159 <Forward/back position adjustment> <For -00, -01, -02-L2634/L3442 s

7. ADJUSTMENTS RH-9820 160NOTE: Relationship between needle drop position and eyelet pattern at the eyelet When switching between cutting before sewi

2. FUNCTION SETTINGS 8 RH-9820Feed control settings No. Setting range Setting items Default value Feed timing correction (°) 250 -20 - 20 When a sma

7. ADJUSTMENTS RH-9820 161 7-18. Adjusting the work clamp lift amounts Adjust the work clamp lift amount <a> to one of the values given below.

7. ADJUSTMENTS RH-9820 1627-19. Adjusting the work clamp positions The positions of the work clamps relative to the needle plate can be adjusted forw

7. ADJUSTMENTS RH-9820 163 7-20. Adjusting the positions of the work clamp plates Adjust the positions of the work clamp plates (3) so that the throa

7. ADJUSTMENTS RH-9820 1647-21. Adjusting the cloth opening amounts Adjust so that the opening amounts for the left and right work clamp plates (1) a

7. ADJUSTMENTS RH-9820 165 <Cloth opening amount adjustment> 8. Loosen the screw (4). 9. Insert a screwdriver into the not

7. ADJUSTMENTS RH-9820 1667-23. Adjusting the lower thread feeding amount <-01 specifications only> It is necessary for enough tension to be ap

7. ADJUSTMENTS RH-9820 167 7-24-2. Adjusting the upper movable knife The upper movable knife (1) is adjusted so that only the upper thread that is in

7. ADJUSTMENTS RH-9820 1687-24-3. Adjusting the position of the thread trimmer lever bracket The position of the needle must be adjusted so that it d

7. ADJUSTMENTS RH-9820 169 7-25. Replacing and adjusting the movable knife and fixed knife (for the lower thread and gimp) <-01 specifications>

7. ADJUSTMENTS RH-9820 1707-25-2. Adjusting the cutting pressure Adjust the cutting pressure to a suitable pressure so that the threads are trimmed c

2. FUNCTION SETTINGS 9 RH-9820Panel operation settings No. Setting range Setting items Default value Disabling program mode OFF Normal 350 ON Switch

7. ADJUSTMENTS RH-9820 171 7-25-4. Adjusting the thread nipper assembly and opener The lower thread must pass through thread nipper D (1) and the gim

7. ADJUSTMENTS RH-9820 1722. The lower thread must go over the projection (9) on thread nipper M (8) and be held securely. To make sure this happens

7. ADJUSTMENTS RH-9820 173 7-25-5. Adjusting the thread handler The lower thread and gimp are securely separated and guided by the thread handler (1)

7. ADJUSTMENTS RH-9820 1747-26. Replacing and adjusting the movable knife and fixed knife (for the lower thread and gimp) <-02 specifications>

7. ADJUSTMENTS RH-9820 175 7-26-3. Adjusting the movable knife installation position

7. ADJUSTMENTS RH-9820 1767-26-4. Adjusting the position of the sub clamp Trimming of the lower thread and gimp is carried out when the work clamps r

7. ADJUSTMENTS RH-9820 177 7-26-5. Differences from older models RH-9820 RH-981A Knife installation position * In order to ensure intercha

7. ADJUSTMENTS RH-9820 178 L1422 L2230 L2634 L3442 NOTE: When the material is set

7. ADJUSTMENTS RH-9820 179 0547B7-27. Adjusting the gimp trailing length <-02 specifications only> The gimp is pressed against the material by

7. ADJUSTMENTS RH-9820 1807-28. Adjusting the position of the lower thread presser <-02 specifications only> Adjust the lower thread presser (1

2. FUNCTION SETTINGS 10RH-9820Device settings No. Setting range Setting items Default value Hammer on time (ms) 550 25 - 200 When a larger value is

7. ADJUSTMENTS RH-9820 181 7-29. Adjustment of the phase for the take-up roller cam 1. Remove the upper

7. ADJUSTMENTS RH-9820 1827-30. Adjusting the needle bar and looper base turning center The turning center for the needle bar and the looper base is

7. ADJUSTMENTS RH-9820 183 7-31. Adjusting the upper thread loosening amount 1. With the plunger (2) of the upper thread

7. ADJUSTMENTS RH-9820 1847-32. Adjusting the lower thread loosening amount 1. Loosen the nut (1). 2. Turn the

7. ADJUSTMENTS RH-9820 185 7-33. Adjusting the looper base home position NOTE: Before carrying out this adjustment, check that the adjustments in “6-

7. ADJUSTMENTS RH-9820 186 5. Press the or key (1) to change the offset value (B). The looper base (5) will move as the keys are pressed. Do th

7. ADJUSTMENTS RH-9820 187 7-34. Adjusting the feed base X home position and Y home position NOTE: * Before adjusting the X home position, check tha

7. ADJUSTMENTS RH-9820 188 5. [Adjusting the X home position] (When

7. ADJUSTMENTS RH-9820 189 6. Press the ENTER key (9). The home position detection operation will be carried out, and the offset value (B) will be s

7. ADJUSTMENTS RH-9820 1904. While holding down the key (7), push the POWER switch at the ON side (8). The mode will switch to input checking mode

RH-9820 This service manual is intended for RH-9820; be sure to read the RH-9820 instruction manual before this manual. Carefully read the “SAFETY I

2. FUNCTION SETTINGS 11 RH-9820 No. Setting range Setting items Default value Lower thread trimming timing (ms) * This is only displayed for -02 spe

7. ADJUSTMENTS RH-9820 191 7-36. Adjusting the upper shaft stop position Adjust the stop position so that upper thread loops are maintained when the

7. ADJUSTMENTS RH-9820 1927-37. Installing (replacing) the sub clamp on the left side If necessary, the sub clamp can be removed from the right side

7. ADJUSTMENTS RH-9820 193 (Bottom)

7. ADJUSTMENTS RH-9820 194 (Top)

7. ADJUSTMENTS RH-9820 195 18. Remove retaining ring C (26), loosen the two set screws (27), and then remove the clamp support shaft (28) in the di

7. ADJUSTMENTS RH-9820 196 Work clamp plate R assembly 25. Insert the clamp support shaft (28) in the direction of th

8. ELECTRICAL MECHANISM 197RH-98208. ELECTRICAL MECHANISM DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the p

8. ELECTRICAL MECHANISM 198RH-98208-2. Inside the control box and operation panel structure Main P.C. board Secured to the side. This is the P.C. bo

8. ELECTRICAL MECHANISM 199RH-98208-3. Description of fuses When replacing the fuses, be sure to use the fuses specified below. If the components on

8. ELECTRICAL MECHANISM 200RH-98208-4. Description of connectors A large number of problems are often caused by connectors that are not inserted cor

2. FUNCTION SETTINGS 12RH-9820 No. Setting range Setting items Default value Sub-hammer on time (ms) * This is displayed when the lapel device is en

8. ELECTRICAL MECHANISM 201RH-9820PMD P.C. board Power supply motor P.C. board 0693B459

8. ELECTRICAL MECHANISM 202RH-9820Panel P.C. board 0694B

8. ELECTRICAL MECHANISM 203RH-98208-4-2. Symptoms when there are poor connections This divides the functions of the connectors into five sections, b

8. ELECTRICAL MECHANISM 204RH-9820Thread trimming mechanism Trouble symptom Connector No. and position • Gimp solenoid and lower thread solenoid do

8. ELECTRICAL MECHANISM 205RH-9820Other Trouble symptom Connector No. and position • DC fan motor does not operate. • [E740] is displayed.

8. ELECTRICAL MECHANISM 206RH-98208-5. Troubleshooting 8-5-1. Troubleshooting procedure Carry out troubleshooting by following the procedure given b

8. ELECTRICAL MECHANISM 207RH-9820 8-5-2. Diagnosis flowchart Description of symbols Setting and status Switch operation Continued on pre

8. ELECTRICAL MECHANISM 208RH-9820 0761B

8. ELECTRICAL MECHANISM 209RH-9820 0762B

8. ELECTRICAL MECHANISM 210RH-98208-5-3. Remedy Problem #1 The power indicator does not illuminate when the power is turned on. Cause Inspection

2. FUNCTION SETTINGS 13 RH-9820Specifications and destination settings No. Setting range Setting items Default value Machine head specifications * T

8. ELECTRICAL MECHANISM 211 RH-9820 Problem #1 The power indicator does not illuminate when the power is turned on. Cause Inspection/Remedy/Adjus

8. ELECTRICAL MECHANISM 212RH-9820 Problem #2 When the power is turned on, an error code is displayed. Cause Inspection/Remedy/Adjustment Replac

8. ELECTRICAL MECHANISM 213RH-9820 Problem #3 Feed base does not move at all when the start switch is depressed. Cause Inspection/Remedy/Adju

8. ELECTRICAL MECHANISM 214RH-9820 Problem #5 When the start switch is depressed, an error code [E200] is displayed. Cause Inspection/Remedy/

8. ELECTRICAL MECHANISM 215RH-9820 Problem #6 When the start switch is depressed, an error code [E210] is displayed. Cause Inspection/Remedy/

8. ELECTRICAL MECHANISM 216RH-9820 Problem #8 Work clamp is not lowered during sewing. Cause Inspection/Remedy/Adjustment Replacement if a m

8. ELECTRICAL MECHANISM 217RH-9820 Problem #11 An error code is displayed after the sewing machine operates. Cause Inspection/Remedy/Adjustme

8. ELECTRICAL MECHANISM 218RH-9820 Problem #14 Lower thread trimming does not operate. Cause Inspection/Remedy/Adjustment Replacement if a malfu

9. ERROR CODES RH-9820 219 9. ERROR CODES DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from th

9. ERROR CODES RH-9820 220Upper shaft motor-related errors Code Cause Remedy PageE110 Needle up stop position error Turn the upper shaft pulley u

2. FUNCTION SETTINGS 14RH-98202-5. Error history checking method The past error history can be checked by the following procedure. 1 While holding d

9. ERROR CODES RH-9820 221 Feed mechanism-related errors Code Cause Remedy PageE200 X-feed motor home position cannot be detected. Problem with X-

9. ERROR CODES RH-9820 222Communication and memory-related errors Code Cause Remedy PageE401 Connection error detected between the main P.C. board

9. ERROR CODES RH-9820 223 Software-related errors Code Cause Remedy Page E569*2 Program version error between main and motor detected. Press the R

9. ERROR CODES RH-9820 224Optional device-related errors Code Cause Remedy PageE940 Sub-hammer is not set even though straight buttonhole program

10. TROUBLESHOOTING RH-9820 225 10. TROUBLESHOOTING • If there is a problem with operation, first check that the threads are correctly threaded and

10. TROUBLESHOOTING RH-9820 226 Problem Cause Remedy Page Needle is bent. Replace with a new needle. Needle, looper and spreader adjustment is in

SERVICE MANUALRH-9820I6100920B2007. 03. B (1)Printed in Japan

2. FUNCTION SETTINGS 15 RH-98202-6. Input checking method Use this to check for any malfunctions of the operation panel keys, circuit boards or sens

2. FUNCTION SETTINGS 16RH-9820<Input check list> No. Check item Checking method Judgment 1 Power supply voltage → Normally around 100% 2

2. FUNCTION SETTINGS 17 RH-9820 No. Check item Checking method Judgment 21 key 22 key 23 ENTER key 24 Shortcut 1 key 25 Shortcut 2 key 26 Sh

2. FUNCTION SETTINGS 18RH-98202-7. Output checking method Use this to check for any malfunctions of the circuit boards, and for checking for problem

2. FUNCTION SETTINGS 19 RH-9820<Output check list> No. Check item Operation 1 Work clamp The work clamp will be lowered while the start swi

2. FUNCTION SETTINGS 20RH-9820 No. Check item Operation 14 Panel indicators The 11 panel indicators will illuminate one by one. 15 Upper tension

RH-9820 i SAFETY INSTRUCTIONS [1] Safety indications and their meanings This service manual and the indications and symbols that are used on the mach

2. FUNCTION SETTINGS 21 RH-98202-8. Software version checking method 1 While holding down the key, push the POWER switch at the ON side(1).

3. READING/WRITING DATA 22RH-98203. READING/WRITING DATA 3-1. Precautions when handling CF cards (commercially available) ・ Use CF cards with a cap

3. READING/WRITING DATA 23 RH-98203-3. Data read/write mode 1 With the power turned off, insert the CF card into the CF slot. NOTE: ・ Make sur

3. READING/WRITING DATA 24RH-98203-4. Reading parameter data from the CF card 1. Select R1 in data read/write mode. 2. Press the ENTER key. The p

3. READING/WRITING DATA 25 RH-98203-8. Writing error log data to the CF card 1. Select W6 in data read/write mode. 2. Press the ENTER key. The er

4. MECHANICAL DESCRIPTIONS RH-9820 264. MECHANICAL DESCRIPTIONS Each mechanism operates in the order of the numbers shown in the illustration. * &l

4. MECHANICAL DESCRIPTIONS RH-9820 274-2. Zigzag and thread take-up mechanisms 1. Upper shaft 2. Hypoid gear 3. Orthog

4. MECHANICAL DESCRIPTIONS RH-9820 284-3. Needle bar rocking mechanism 1. Pulse motor R 2. Theta M pulley assembly 3. Ti

4. MECHANICAL DESCRIPTIONS RH-9820 294-4. Feed mechanism <X direction> 1. Pulse motor X 2. Feed gear 3. Idler gear 4. X rack 5.

4. MECHANICAL DESCRIPTIONS RH-9820 304-5. Presser foot mechanism <When work clamp is lowered> 1. Clamp cylinder 16X10 2. Clamp cylinder rod

RH-9820 ii [2] Notes on safety DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall outl

4. MECHANICAL DESCRIPTIONS RH-9820 314-6. Cloth opening mechanism <After operation> 1. Opening cylinder assembly 16X15

4. MECHANICAL DESCRIPTIONS RH-9820 324-7. Cutter mechanism 1. Cylinder 63X100 2. Cylinder rod 3. Cutter lever 4. Cutter link 5. Cutter arm asse

4. MECHANICAL DESCRIPTIONS RH-9820 334-9. Spreader mechanism 1. Lower shaft 2. Lower shaft cam 3. Spreader lever A 4. Spreader lever B 5. Slide bl

4. MECHANICAL DESCRIPTIONS RH-9820 344-11. Upper tension release mechanism 1. Upper tension release solenoid 2. Bolt 3. Tension

4. MECHANICAL DESCRIPTIONS RH-9820 354-13. Lower thread release and lower thread take-up mechanisms <-01> 1. Lower thread tension release

4. MECHANICAL DESCRIPTIONS RH-9820 364-15. Lower thread trimmer mechanism <-01> 1. Cylinder assembly 16X30 B 2. Thread trimm

4. MECHANICAL DESCRIPTIONS RH-9820 37

5. DISASSEMBLY RH-9820 385. DISASSEMBLY DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the

5. DISASSEMBLY RH-9820 39 Disassemble the parts in the order shown in the illustration. 5-1. Covers and presser foot mechanism

5. DISASSEMBLY RH-9820 405-2. Upper shaft motor unit mechanism * Start with the machine head in its upright positio

RH-9820 iii CAUTION Sewing This sewing machine should only be used by operators who have received the necessary training in safe use beforehand. Th

5. DISASSEMBLY RH-9820 415-3. Feed mechanism 5-3-1. Feed base unit * Carry out the following with the machine head in t

5. DISASSEMBLY RH-9820 425-3-2. X feed unit * Carry out the following with the machine head tilted back. 17. Socket bolts [3 pcs] 18. X fe

5. DISASSEMBLY RH-9820 435-4. Lower thread tension mechanism * Carry out the following with the machine head tilted back. 1.

5. DISASSEMBLY RH-9820 445-5. Spreader mechanism * Carry out the disassembly procedure in “5-4. Lower thread tension mechanism” before the disassemb

5. DISASSEMBLY RH-9820 455-6. Looper mechanism * Carry out the disassembly procedure in “5-5. Spreader mechanism” before the disassembly procedure i

5. DISASSEMBLY RH-9820 465-7. Needle bar rocking mechanism * Carry out the disassembly procedure in “5-2. Upper shaft motor unit mechanism” before t

5. DISASSEMBLY RH-9820 475-8. Looper base mechanism * Carry out the disassembly procedure in “5-5. Spreader mechanism” and the “5-6. Looper mechanis

5. DISASSEMBLY RH-9820 485-9. Needle bar mechanism * Carry out the following with the machine head in the upright position. 1.

5. DISASSEMBLY RH-9820 495-10. Lubrication 1089B

5. DISASSEMBLY RH-9820 50 1. Screw 2. Cord holder 3. Felt 4. Screw 5. Tube support B 6. Felt 7. Felt 8. Wick 9. Wick 10. Cord holders (7N) [4 pcs]

RH-9820 iv [3] Warning labels The following warning labels appear on the sewing machine. Please follow the instructions on the labels at all times wh

5. DISASSEMBLY RH-9820 515-11. Zigzag and thread take-up mechanisms * Carry out the following with the machine head in the upr

5. DISASSEMBLY RH-9820 525-12. Upper shaft mechanism * Carry out the following with the machine head in the upright positio

5. DISASSEMBLY RH-9820 535-13. Cutter mechanism * Start with the machine head in its upright position. 1. Screws [2

6. ASSEMBLY RH-9820 546. ASSEMBLY DANGER Wait at least 5 minutes after turning off the power switch and disconnecting the power cord from the wall

6. ASSEMBLY RH-9820 55 ・ Assemble each part in the order shown in the illustration. ・ Parts indicated by are part of the same assembly. 6-1.

6. ASSEMBLY RH-9820 56 1. Bush cutter lever shaft 2. Cutter driving shaft 3. Guide block 4. Socket bolts [2 pcs] (Temporarily tighten) 5. Bolt

6. ASSEMBLY RH-9820 576-2. Needle bar mechanism (1) * Refer to “Adjusting the pressure of the needle bar gear block” on the next page.

6. ASSEMBLY RH-9820 58 Adjusting the pressure of the needle bar gear block Secure the needle bar gear nut (6), and then while pushing the needle bar

6. ASSEMBLY RH-9820 596-3. Zigzag mechanism * Refer to the detailed descriptions on the next page for details on A and B in the illustration.

6. ASSEMBLY RH-9820 60 1. Zigzag connecting rod assembly 2. Shoulder screw 3. Nut 4. Zigzag crank screw 5. Nut 6. Plain washer 7. Nut (Temporaril

RH-9820 v Belt cover (Rear) 0331B0332B 0334B 0486B0485B0333B

6. ASSEMBLY RH-9820 616-4. Upper shaft mechanism * Refer to the detailed descriptions on pages 62 and 63 for details on A to C in the illustration.

6. ASSEMBLY RH-9820 62 1. Bearing 2. Bearing collar 3. Bearing 4. Upper shaft crank 5. Screw 6. Set screw 7. Upper shaft 8. Spacer 9. Bearing 10

6. ASSEMBLY RH-9820 63<Adjusting the pressure of the orthogonal shaft> While pushing the pulley base(27) in the direction of the arrow with a f

6. ASSEMBLY RH-9820 646-5. Thread take-up mechanism Insert the roller (4) into the groove in the thread take-up cam, and then insert the thread take-

6. ASSEMBLY RH-9820 656-6. Needle bar mechanism (2) * Refer to the detailed descriptions on pages 66 to 68 for details on A to F in the illustration

6. ASSEMBLY RH-9820 661. Needle bar bush U assembly 2. Needle bar bush holder base C 3. Socket bolts [3 pcs] (Temporarily tighten) 4. Oil plate 5

6. ASSEMBLY RH-9820 67 D Slide block guide D installation 1) Provisionally tighten the four socket bolts (10) so that the slide block guide D (9)

6. ASSEMBLY RH-9820 68 F Needle bar crank forward/back adjustment 1) Align the screw stop of the needle bar crank (11) with the side where the two

6. ASSEMBLY RH-9820 696-7. Y feed mechanism * Refer to the detailed descriptions on pages 70 to 72 for details on A to F in the illustration. * App

6. ASSEMBLY RH-9820 70 1. Ball bearings [2 pcs] 2. Ball bearing stoppers [2 pcs] 3. Screws [2 pcs] 4. Y position sensor 5. Screw 6. Ball bear

RH-9820 CONTENTS 1. MACHINE SPECIFICATIONS... 1 2. FUNCTION SETTINGS ...2 2-1. List of special functions when power is turned on.

6. ASSEMBLY RH-9820 71 E Belt tension adjustment Repeat steps1 to 3 to adjust the belt tension until it is within the ranges given below. ・ When us

6. ASSEMBLY RH-9820 72 F Standard installation of motor unit <Y shaft and Y shaft holder installation positions> Align the end (A) of the

6. ASSEMBLY RH-9820 736-8. Looper base mechanism * Refer to the detailed descriptions on pages 75 to 78 for details on A to F in the illustration. *

6. ASSEMBLY RH-9820 74 1. Wick 2. Spreader cam link 3. Collar 4. Shoulder screw 5. Screw (Temporarily tighten) 6. Spreader link base 7. Shoulder

6. ASSEMBLY RH-9820 75 A Tie one end of the wick (1) once, and then push that end into the hole (a) in the support shaft base (43).* Push in so t

6. ASSEMBLY RH-9820 76 C Hook the longer end of twist spring R (19) onto spreader R (13), and pass the shorter end through the hole in the LS holder

6. ASSEMBLY RH-9820 77 G 1) Tie the wick (75) around the wick release plate (78) as shown in the illustration. * Make a double knot in the wick,

6. ASSEMBLY RH-9820 78 J 1) Apply adhesive (Threebond 1373B) to the outer circumferences of the two ball bearings (91). 2) Insert the two ba

6. ASSEMBLY RH-9820 796-9. Needle bar rocking mechanism * Refer to the detailed descriptions on pages 80 to 84 for details on A to G in the illustra

6. ASSEMBLY RH-9820 80 1. Bearing 2. Set screws [2pcs] (Temporarily tighten) 3. Set screw collar 4. Bearing 5. Internal retaining ring 6. Socke

RH-9820 6-22. Routing the harnesses...129 6-23. Routing the air tubes...

6. ASSEMBLY RH-9820 81E Belt tension adjustment for needle bar gear block belt 1) Place the timing belt (8) onto the needle bar gear block (a) and

6. ASSEMBLY RH-9820 82 F Belt tension adjustment for driving looper belt <Standard installation when belt is tensioned> Attach the timing b

6. ASSEMBLY RH-9820 83 G Looper base and needle bar gear block position adjustment 1) Loosen the socket bolt (6) of the vertical shaft timing pull

6. ASSEMBLY RH-9820 84 6) Push the vertical shaft timing pulley U assembly (7) up gently until it touches the bearing (1), and then tighten the soc

6. ASSEMBLY RH-9820 856-10. Lower shaft mechanism * Refer to the detailed descriptions on pages 86 to 89 for details on A to C in the illustration.

6. ASSEMBLY RH-9820 86 1. Bearing 2. Bearing collar 3. Bearing 4. Bearing collar 5. Bearing 6. Lower shaft tension pulley A 7. Lower shaft tens

6. ASSEMBLY RH-9820 87 B Belt (upper shaft - lower shaft) installation and belt tension adjustment <If the belt (lower shaft – upper shaft motor

6. ASSEMBLY RH-9820 88<If the belt (lower shaft – upper shaft motor) is installed (if the upper shaft motor is already installed)> 1) Turn t

6. ASSEMBLY RH-9820 89 C Lower shaft provisional installation position * This position is the provisional position for the lower shaft until the p

6. ASSEMBLY RH-9820 906-11. Looper mechanism * Refer to the detailed descriptions on the next page for details on A in the illustration. * Apply t