JCM GOLD GP-965 Service Manual - page 4
GP-965 service
manual
4
Table 3-1 Main Units of GP-965
Name
Unit No.
Main Circuit Board
Refer to the GP-965
Power Supply Board
Refer to the GP-965 PS
Panel SW Circuit Board
M-290 Printer Mechanism
Part Pricing List
Table 3-2 Required Measuring Instruments
Designation
Standard
Tester
DC voltage and resistance
Oscilloscope
Equipped with 50-MHz storage
Table 3-3 Surface Phenomena for Troubleshooting
Surface Phenomena
Description
Page
The POWER switch is
turned ON, but the printer
doesn’t operate.
l The POWER LED on the control
panel doesn’t light.
l The POWER LED lights, but the
printer isn’t initialized.
5
The printer prints, but
printed results are poor.
l No printing is performed.
l Printing is faint.
l Dots are missing.
7
Paper feeding is abnormal. l The paper is not fed at all.
l Paper feeding is irregular and
printing is uneven.
8
The control panel doesn’t
work properly.
l The REVERSE or RELEASE
switch doesn’t work.
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