MMCS
TSB Revision
CHASSIS ELECTRICAL
54A-505
STEP 17. Check the wiring harness between multivision
display connector C-10 (terminal 6) and audio amplifier
connector D-126 (terminal 34)
NOTE: Also check intermediate connectors C-15 and C-22 for
loose, corroded, or damaged terminals, or terminals pushed
back in the connector. If intermediate connector C-15 or C-22 is
damaged, repair or replace the connector as described in
GROUP 00E, Harness Connector Inspection
P.00E-2
.
• Check the communication line for open circuit and short cir-
cuit.
Q: Is the wiring harness between multivision display
connector C-10 (terminal 6) and audio amplifier
connector D-126 (terminal 34) in good condition?
YES : Go to Step 18.
NO : The wiring harness may be damaged or the
connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary.
STEP 18. Retest the system
Check that the audio sound is output.
Q: Is the check result normal?
YES : The trouble can be an intermittent malfunction (Refer
to GROUP 00
− How to use
Troubleshooting/inspection Service Points
− How to
Cope with Intermittent Malfunction
P.00-15
).
NO : Go to step 19.
STEP 19. Retest the system
Temporarily replace the multivision display and check if the
sound is output.
Q: Is the check result normal?
YES : Replace the multivision display.
NO : Replace the audio amplifier.