Service manual
49
13VT-R100/R150
13VT-CR10
SOUND E-E MODE TROUBLESHOOTING FLOW CHART NO.1-17
No E-E signal
YES
YES
YES
YES
NO
NO
NO
NO
NO
Are there the I
2
C data and
clock signal at pins (62) and
(63) of IC2201?
Check circuits around the audio output
circuit in IC401 and parts around the audio
inputs jack (J401).
Check between pins (62) and (63) of
IC2201 and all the way thru to pins (57)
and (56) of IC2001.
Check PC 5V line.
Check IC2201.
Is there a signal at pin (8)
and (9) of IC2201?
Is the supply voltage of 5V
feed to pin (96) of IC2201?
Is there a signal at pin (11) of
IC2201?
Check between pin (11) of
IC2201 and pin (1) of IC402.
Is voltage of pins (95), (8) and (10) of
IC2201 normal?
FLOW CHART NO.1-18
NO
YES
YES
YES
YES
YES
NO
NO
NO
NO
SOUND RECORDING MODE TROUBLESHOOTING
No record.
Check between pin
(62) and (63) of
IC2201 with pin (57)
and (56) of IC2001,
respectively.
Check
IC2201.
Is there a signal at pin (4) of
IC6601?
Check BIAS CTL (H) line.
Check AT 12V line.
Is there a signal at pin (4) of
IC2201?
Is there "H" level at pin (2) of
T6601?
Is there a signal (Bias) at pin (6) of
T6601?
Check T6601, Q6603, Q6604 and
peripheral parts.
Is there a signal (Bias+Audio sig.) at
pin (4) of connector AA?
Check the signal line between pin
(4) of connector AA with pin (4) of
IC2201, and pin (6) of T6601.
NO
YES
Are there the I
2
C data and clock
signal at pins (62) and (63) of
IC2201?
Check MH-AA connection and A/C
head.