Trouble Shooting Forcircuitry - Sanyo SFX-32 Service Manual

5-3. Trouble shooting for circuitry
(1) No display on LCD light when Power is turned ON.
Check the connection of CN6 (M-1) and CN61 (M-6).
Check pin No. 12 of CN7 (M-l), +5V? Check Power Supply (M-7).
I
YES
~ ~~
Check the connection of CN2 and CN21.
Check the connection of CN22 (M-2) and LCD connector.
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YES
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Check the Main PCB (M-1)
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(2) Key-in is impossible from the operation panel.
I Check the same as described (l). I
I I
YES
Check the connection of CN2 (M-l).
Check the Main PCB (M-1).
I I I
1
I
Check the operation panel PCB (M-2).
(3) LCD indcates "CHECK PAPER ROLL".
Is recording paper set properly?
I
YES
~
In the Receiving cover closed securely'?
Check the connection of CN5 (M-l).
is/PAP (CN5-pin No. 4) less than 0.5V?
Check the reception mecha PCB (M-5.)
I
YES
I
NO
Check the M-1 PCB.
Check the recording paper SW on the M-5 PCB.
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