Sharp VC-G200SM, Руководство по обслуживанию

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