Sony RDR-VX500 Service Manual page 116

MONO
CHECK
CHECK AUDIO MISSING NO
IN PB MODE PB MODE
YES
IC301-76 NO IC501-4
AUDIO SIGNAL
AUDIO SIGNAL
NO
YES
CHANGE IC501
NO
IC301-10
CHECK
AUDIO SIGNAL IC301-58 AND CHANGE IC301
YES
NO
IC301-9
CHANGE
AUDIO FM SIGNAL
IC301
YES
IC301-7
NO CHECK
MIX SIGNAL
R331, C353
(AUDIO+70KHz)
YES
NO
CHECK
Q305
Q304, Q305, C354
OSCILLATION
YES
CHECK
A/CE HEAD
YES
CHECK
C336, R322, R348
NO
IC301-53, 54, 55
CHECK (CLOCK, DATA)
AUDIO MISSING
(VCR Section)
IN PB MODE
CHECK "AUDIO
MISSING IN EE MODE"
PLACE THE VCR IN PB MODE
MONO
AUDIO SELECT
HIFI
CHECK
IC501-24, 27 NO
IC501-29(A.H D SW)
CHANGE CYLINDER OR
AUDIO FM(MIXED)
IC501
YES
CHANGE
IC501
NO CHECK ACE HEAD
IC301-3
C353, C348, R332
AUDIO SIGNAL
AND CHANGE IC301
YES
CHECK C349, R333 or
CHANG IC301