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5-3. Trouble shooting for circuitry
(1) No displayon 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-1), +5V?
Check Power Supply (M-7).
Check the connection
of CN2 and CN21.
1
YES
1
Check the connection
of CN22 (M-2) and L~l
I
YES
Check the Main PCB (M-1)
(2) Key-in is impossible from the operation panel.
Check the same as described (1).
/
YES
Check the connection
of CN2 (M-l).
Check the Main PCB (M-l).
T
L
I
Check the operation panel PCB (M-2).
.—
(3)
LCD indicates"CHECK PAPER ROLL".
EIIs=L
Is recording paper set properly?
In the Receiving cover closed securely?
~
Check the connection
of CN5 (M-l).
I
YES
is/PAP (CN5-pin No. 4) less than 0.5V?
Check the reception mecha PCB (M-5.)
I
I
L
I
1
&
1
NO
Check the recording paper SW on the M-5 PCB.
—16—
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