VC-G20SM VC-G200SM VC-G201SM VC-G401SM - Cenatel
VC-G20SM VC-G200SM VC-G201SM VC-G401SM - Cenatel
VC-G20SM VC-G200SM VC-G201SM VC-G401SM - Cenatel
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<strong>VC</strong>-<strong>G20SM</strong>/<strong>G200SM</strong><br />
<strong>VC</strong>-<strong>G201SM</strong>/<strong>G401SM</strong><br />
FLOW CHART NO.12 CAPSTAN MOTOR TROUBLESHOOTING<br />
The capstan motor fails to run.<br />
Is the voltage more than about 2.6V<br />
DC given out of pin(29) of IC701?<br />
NO<br />
Check IC701.<br />
YES<br />
Is the supply voltage of 5V fed to<br />
pin(3) of P701?<br />
NO<br />
Check PC 5V line.<br />
YES<br />
Is the voltage more than 2.6V DC<br />
sent in pin(9) of P701?<br />
NO<br />
Check line between the P701 and<br />
pin(29) of IC701?<br />
YES<br />
Is the voltage of pin(5) of P701<br />
1.6~2.7V?<br />
NO<br />
Check line between the pin(91) of<br />
IC701 and pin(5) of P701.<br />
YES<br />
Is the supply voltage of 12V/25V fed<br />
to pin(2) of P701?<br />
NO<br />
Check MOTOR Vcc line and motor<br />
voltage selector circuit. (Q992, Q993)<br />
YES<br />
Replace capstan motor.<br />
FLOW CHART NO.13 DRUM MOTOR TROUBLESHOOTING(1)<br />
The drum motor fails to run.<br />
Is the voltage more than about 2.6V<br />
DC given out of pin(30) of IC701?<br />
NO<br />
Check IC701.<br />
YES<br />
Is the supply voltage of 5V fed to<br />
pin(3) of P701?<br />
NO<br />
Check PC 5V.<br />
YES<br />
Is the voltage more than about 2.6V<br />
DC given out of pin(12) of P701?<br />
NO<br />
Check line between pin(30) of<br />
IC701 and pin(12) of IP701.<br />
YES<br />
Is the supply voltage of 12V fed<br />
to pin(8) of P701?<br />
NO<br />
Check M 12V line.<br />
YES<br />
Replace drum motor.<br />
FLOW CHART NO.14 DRUM MOTOR TROUBLESHOOTING(2)<br />
The drum motor runs only for a few seconds.<br />
Replace IC on mechanism.<br />
NO<br />
Is drum PG signal given out from<br />
the pin(11) of P701?<br />
NO<br />
Check peripheral circuit of IC on<br />
mechanism.<br />
YES<br />
YES<br />
Check drum motor.<br />
Is drum PG signal fed to pin(65)<br />
of IC701?<br />
NO<br />
Check line between pin(11) of<br />
P701 and pin(65) of IC701.<br />
YES<br />
Is head switching pulse sent out NO<br />
from the pin(23) of IC701? Check IC701.<br />
YES<br />
Replace IC701.<br />
FLOW CHART NO.15 HEAD SWITCHING PULSE TROUBLESHOOTING.<br />
No head switching pulse.<br />
Is the drum motor rotating?<br />
YES<br />
Is the drum PG signal and drum<br />
FG signal present on pin(65) of<br />
IC701?<br />
NO<br />
YES<br />
See FLOW CHART NO.13, 14<br />
(DRUM MOTOR<br />
TROUBLESHOOTING(1), (2))<br />
Replace IC701.<br />
NO<br />
D. FG-PG<br />
about 5Vp-p<br />
Are the drum PG signal and drum<br />
FG signal present on pin(11) of<br />
P701?<br />
NO<br />
Check peripheral circuit of<br />
IC on mechanism.<br />
YES<br />
Check line between P701 and IC701.<br />
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