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1977 PONTIAC SERVICE MANUAL
,
I
TURN ON,IGNITION
I
,
TURN ON RADlO ANDIOR TAPE
PLAYER.
I
CHECK RADIO THEN TAPE PLAYER
CHECK TO SEE IF ALL SPEAKERS
M E M A D (USE FADER TO CHECK1
I
NO
I
SUBSTITUTE SPEAKERISI
ES
YES
1
TAPE ONLY DEAD
I
Saa Fig. 9-34
SUBSTITUTE SPEAKER WORKS.
SUBSTITUTE SPEAKER
BUT DEAD SPOT ON FAMR
I
DOES NOT WORK
REMOVE RADlO
SPEAKERWIRING ASSEMBLY
SUBSTITUTE SPEAKER WORKS
AND NO DEAD SPOT ON FADER
REMOVE OBSTRUCTION
SUBSTITUTE KNOWN
GOOD TAPE CARTRIDGE
CAUTION IMPROPER
REMOVAL MAY D A M G E
WORKS
REPLACE MALFUNCTIONING
A M AND FM DEAD
ALL MODES DEAD
u
CHECK FUSE
9
I
CHECK THAT ANTENNA IS
PLUGGED INTO RADlO MAKE
SURE PLUG ISN'T LOCKED.
I
FUSE OK
I
FUSE BLOWN
I
1
GOOD CONNECTION
BAD CONNECTION
I
1
CHECK AT M E RADIO
c
1
$OR FAULTY POWER
UNPLUG RADlO
POWER LEAD
REPLACE FUSE
CHECK ANTENNA AND
REPAIR CONNECTION
CONNECTION OR
LEAD IN WITH A SUBSTI.
SPEAKER CONNECTIONS
TUTE ANTENNA TRIM
ISEE PROCEDURE NO
1.1
NO R E C 1 _
I
RADIO_KS
I
REMOVE PLAYER
I
REPLACE MAL-
FUSE BLOWS AGAIN
FUNCTIONING
ANTENNA OR
RE-TRIM
CHECK ALL ACCESSORIES
ON FUSE FOR PROBLEM
ISEE SERVICE MANUAL
TEST DRIVE I$ NECESSARY1
OESN'T
o w
1
CORRECT PROBLEM
- I ? -
RADlO WORKS
FUSE BLOWS
Note: Procedures listed are in
Figura
9-36 and 9-37.
I
REMOVE UNIT
I
Fig.
9-35
Radio Diagnosis
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