Trouble Shooting Forcircuitry - Sanyo SFX-11 Service Manual

5-3. Trouble shooting for circuitty
(1)
(2)
(3)
No display on LCD tiiht when Power switch is tumd ON
Check the connection of CN1 (M-1) and CN51 (M-5).
I
YES
I Check Pin No. 1 of CN1 (M-l), +5V ?
1~~1 Check power suppIy (M-5).
I
I I
I
YES
Check the connection of CN2-1 through 2-3 (M-1) and
CN21 through 23 (M-2).
I
YES
Check the connection of CN24 (M-2) and LCD connector.
NO
Check the Main PCB (M-l). Check LCD.
Key-in is impossible from the operation panet
Check the same as described (l).
I
OK
NO
Check the connection of CN2-2 and 2-3 (M-2).
Check the Main PCB (M-l).
1
YES
Check the operation panel PCB (M-2).
LCD indicates "CHECK PAPER ROLL" ("PAPIER PRUEFEN")
Is recording paper set properly?
I
I
YES
Is
the
Receiving cover closed securely?
I
1
YES
Check the connection of CN8 (M-l).
~ YES
Is /PAP (CN8-pin No. 8) less than 0.8V ?
YES
~ '0 '~
Check the M-1 PCB. Check the sensor for the recording
paper.
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