MDC-2200/2500 Series
Chapter 6 Troubleshooting and on-board repair
0092625002-07
6-9
6.3.2.2 Initial malfunction diagnostics 2
No
Yes
Yes
No
No
No
Yes
Operation panel failure
Yes
No
Yes
No
Operation panel failure
Is main power fuse (F1)
normal? (not blown)
Is fuse properly rated?
Exchange fuse
Is inboard power polarity
correct?
Reconnect correctly
Yes
Is power supply voltage
within normal range?
10.8 to 41.6 V
(RB716A/717A/718A)
21.6 to 41.6 V
(RB719A)
Reconnect to proper
power supply.
Is +5V (J602-16 pin)
normal?
Is voltage between
[J722-4] and [J722-1]
around 0V at power on?
Power supply PCB
failure
Is the following
connectors connected
correctly?
(1) J710 (main logic PCB)
to power supply PCB
(2) J722 to Operation
panel
Connect connectors
correctly
Fix the abnormal connection to normal.
Yes
No
Is control unit J8
connected to the
Operation panel
correctly?
Main logic PCB failure
No
Are the three LED lights
on logic PCB flashing?
Yes
Power supply failure
No
Yes
Содержание MDC-2200 series
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