Brother BAS-761 Service Manual Page 92

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6. ELECTRIC COMPONENTS
BAS-7610
6-18
6-5-3. Operation panel PCB
P1 [LCD] (JAPAN SOLDERLESS TERMINAL 19FE-ST)
Pin No. Signal name Probable symptoms due to poor contact
1 - 19 LCD control
LCD does not indicate.
P2 [MAIN] (JAPAN SOLDERLESS TERMINAL B12B-XH-A)
Pin No. Signal name Probable symptoms due to poor contact
1
2
±0V
3 Sending data
4 Sending control
5 Reception data
6 Reception control
7 Error lamp
8
9
+12V
10 -12V
The power lamp of the operating panel is not lit.
Back light of the operating panel is not lit.
The operating panel does not operate.
The switch of the operating panel does not operate.
Indication of the operating panel is abnormal.
11
12
+5V
P3 [INVERTER] (JAPAN SOLDERLESS TERMINAL B2B-EH)
Pin No. Signal name Probable symptoms due to poor contact
1
±0V
2+12V
Back light of the LCD is not lit.
LCD
Main PCB
Inverter
RS-232C
1773S
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