VC-G20SM VC-G200SM VC-G201SM VC-G401SM - Cenatel

FLOW CHART NO.22 LINEAR SOUND MODE TROUBLESHOOTING(2)
YES
YES
YES
YES
Is there signal (Bias + Audio sig)
at pin (6) of T601?
No linear sound recording (E-E mode is possible)
YES
Check the MH-AA harness and A/C
head.
NO
NO
NO
NO
NO
Replace IC201.
Check M 12V line.
Check peripheral circuits of T601.
VC-G20SM/G200SM
VC-G201SM/G401SM
FLOW CHART NO.21 LINEAR SOUND MODE TROUBLESHOOTING(1)
No E-E sound
Is there audio signal inputted at input
terminal as shown in table?
Decoder or aux signal input terminal.
Pin (8) of IC201
NO
Check line ranging from SCART input
terminal.
For SINGLE SCART MODEL
Check line ranging from pin (39) of IC2501
(DECODER) or from SCART input terminal.
Front A/V signal input terminal.
Pin (11) of IC2501 (DECODER) or Front A/V
signal input terminal pin(7) of IC201.
YES
Is there audio signal outputted at pin (11)
of IC201?
NO
NO
Check line ranging from Front A/V input
terminal (J202).
Check PC 5V lines.
NO
For 2 SCART MODEL
Is the supply voltage of 5V fed to pin (96)
of IC201?
YES
YES
Is there "L" level at pin(99) of IC201?
YES
Check AUDIO MUTE (H) line between pin
(99) of IC201 and pin (81) of IC701.
Does the trap circuit operate normally?
NO
Check the trap circuit. (Q601,Q613).
YES
YES
To Output Terminal
Line output terminal : Is there audio signal
inputted at pins (2) of IC2501?
YES
NO
Check line between Q601, Q613 of
IC 201 and Audio Output Terminal.
For Single SCART MODEL
Is there audio signal outputted at pins (42),
and (30) of IC2501?
YES
NO
Check peripheral circuit.of IC2501.
Check line between IC2501 peripheral and
output terminal peripheral.
For 2 SCART MODEL
Is "L" level applied at pin(99) of
IC201?
Is there signal at pin (4) of IC201?
Is the supply voltage of 12V fed to
pin (2) of T601?
Is there signal (Bias) at pin (5) of T601?
Check the AUDIO MUTE (H) line
between pin (99) of IC201 and pin
(81) of IC701.
Check the Bias oscillation circuit (T601,
Q602,Q603) and A-ERASE CTL line.
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