Page 617 of 4087

7RadioWOOFER VOLUME FAINT
A. without CD player type
Wire harness faulty.Wire harness faulty.
Radio receiver assembly faulty.
Is tape player operating normally?
Is there continuity between the following terminals
with connector disconnected?
Radio receiver assembly D1±ground
Radio receiver assembly D5±ground
Woofer amplifier faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier D1 ± Woofer amplifier 1
Radio receiver amplifier D5 ± Woofer amplifier 5
Radio receiver assembly faulty. Temporarily install another woofer amplifier.
Functions OK?
B. with CD player type
HINT: The part names and terminals indicated in brackets ( ) are for model\
s with a Nakamichi system.
Wire harness faulty. Wire harness faulty. Radio receiver assembly faulty.
Is tape player operating normally?
Is there continuity between the following terminals
with connector disconnected?
Radio receiver assembly D1±ground
Radio receiver assembly D5±ground
Woofer amplifier faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier D1 ± Woofer amplifier 1
(Power amplifier C1)
Radio receiver amplifier D5 ± Woofer amplifier 5
(Power amplifier C5)
Radio receiver assembly faulty. Temporarily install another woofer amplifier.
Functions OK?
±
BODY ELECTRICAL SYSTEM AUDIO SYSTEMBE±231
WhereEverybodyKnowsYourName
Page 618 of 4087
8RadioRECEPTION POOR
Antenna cord faulty.Poor signals, poor location.
Problem with radio wave signals or location?
Go to No. 32. Check if antenna cord is OK?
Radio receiver assembly faulty.
9RadioPRESET MEMORY DISAPPEARS
Wire harness or connector faulty.
Radio receiver assembly faulty. Is terminal A4 of radio receiver assembly
properly connected?
BE±232±
BODY ELECTRICAL SYSTEM AUDIO SYSTEM
WhereEverybodyKnowsYourName
Page 619 of 4087

10RadioVOLUME REMAINS AT MAXIMUM LEVEL
A. without CD player type
Wire harness faulty.Radio receiver assembly faulty.
Is tape player operating normally?
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier B1 ± Power switch 14
Radio receiver amplifier B3 ± Power switch 11
Power switch faulty.
Radio receiver assembly faulty.
When the volume switch is turned from minumum
to maximum, does resistance between terminal
11±14 of power switch changes from 0 to 50 k
?
B. with CD player type
Wire harness faulty.
Radio receiver assembly faulty.
Is tape player operating normally?
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier B1 ± Power switch 14
Radio receiver amplifier B3 ± Power switch 11
Power switch faulty.
Radio receiver assembly faulty. When the volume switch is turned from minumum
to maximum, does resistance between terminal
11±14 of power switch changes from 0 to 50 k ?
±
BODY ELECTRICAL SYSTEM AUDIO SYSTEMBE±233
WhereEverybodyKnowsYourName
Page 620 of 4087
11Tape playerCASSETTE TAPE CANNOT BE INSERTED
A. without CD player type
Wire harness faulty. Radio receiver assembly faulty.
Is there continuity between the following terminals
with connector connected?
Radio receiver amplifier A3 ± ground
Radio receiver amplifier A4 ± ground
Radio receiver assembly faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver assembly A7 ± ground Replace fuse.
Wire harness faulty.Remove foreign object.
Is there a foreign object inside tape player?
Is radio operating normally?
Check if RADIO No. 1 and RADIO No. 2 fuses
are OK.
BE±234±
BODY ELECTRICAL SYSTEM AUDIO SYSTEM
WhereEverybodyKnowsYourName
Page 621 of 4087
B. with CD player type
Wire harness faulty. Radio receiver assembly faulty.
Is there continuity between the following terminals
with connector connected?
Radio receiver amplifier A3 ± ground
Radio receiver amplifier A4 ± ground
Power amplifier faulty. Is there continuity between the following terminals
with connector disconnected?
Radio receiver assembly A11 ± ground Replace fuse.
Wire harness faulty.
Remove foreign object.
Is there a foreign object inside tape player?
Is radio operating normally?
Check if RADIO No.1 and RADIO No.2 fuses are OK
Wire harness faulty.Radio receiver assembly faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver assembly A11 ± Power amplifier A11
Is there continuity between the following terminals
with connector disconnected?
Power amplifier B7±ground.
±
BODY ELECTRICAL SYSTEM AUDIO SYSTEMBE±235
WhereEverybodyKnowsYourName
Page 622 of 4087
12Tape playerCASSETTE TAPE WILL NOT EJECT
A. without CD player type
Is there battery voltage between the following ter-
minals with connector connected?
Radio receiver amplifier A3 ± ground
Radio receiver amplifier A4 ± ground Replace fuse.
Wire harness faulty.
Wire harness faulty.
Is radio operating normally?
Check if RADIO No.1 and RADIO NO.2 fuses are OK Is tape player operating normally?
Radio receiver assembly faulty
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier A7 ± ground Cassette tape is
jammed or radio receiv-
er assembly faulty.
Radio receiver assem-
bly faulty.
BE±236±
BODY ELECTRICAL SYSTEM AUDIO SYSTEM
WhereEverybodyKnowsYourName
Page 623 of 4087
B. with CD player
Is there battery voltage between the following ter-
minals with connector connected?
Radio receiver amplifier A3 ± ground
Radio receiver amplifier A4 ± ground Replace fuse.
Wire harness faulty.
Is radio operating normally?
Check if RADIO No.1 and RADIO NO.2 fuses are OK Is tape player operating normally?
Power amplifier faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier A11 ± ground Cassette tape is
jammed or radio receiv-
er assembly faulty.
Radio receiver assem-
bly faulty.
Wire harness faulty. Wire harness faulty.Radio receiver assembly faulty.
Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier A11 ± Power amplifier A11
Is there continuity between the following terminals
with connector disconnected?
Power amplifier B7 ± ground
±
BODY ELECTRICAL SYSTEM AUDIO SYSTEMBE±237
WhereEverybodyKnowsYourName
Page 624 of 4087
13Tape playerDISPLAY INDICATES, BUT NO SOUND IS
PRODUCED (EXCEPT WOOFER)
A. without CD player type
Is radio operating normally?Radio receiver assembly faulty.
Radio receiver assembly faulty. Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier B1 ± Power switch 14
Radio receiver amplifier B3 ± Power switch 11
When the volume switch is turned from minu-
mum to maximum, does resistance between
terminal B1±B3 of radio receiver assembly
change from 0 to 50 k
?
is resistance value approx. 50 k between ter-
minals B3±B6 of radio receiver assembly? Is there continuity between the following terminals
with connector disconnected?
Radio receiver amplifier B6 ± Power switch 13
Power switch faulty. Wire harness faulty. Power switch faulty. Wire harness faulty.
BE±238±
BODY ELECTRICAL SYSTEM AUDIO SYSTEM
WhereEverybodyKnowsYourName