LG LGXBR342 Service Manual page 17

VCR ELECTRICAL TROUBLESHOOTING GUIDE
2. SERVO CIRCUIT
(3) When the Capstan Motor doesn't run,
When the Capstan Motor doesn't run,
Does 12VA appear at PMC01?
Does 2.8V appear at PMC01?
Check the PMC01 and the Capstan
Motor Ass'y.
Are the foil patterns and Components
between IC501 Pin77 and PMC01
Pin9 shorted?
Does the CFG signal come into IC501
Pin87?
Does the Capstan PWM signal appear at
IC501 Pin77?
Are the foil patterns and Components
between IC501 Pin77 and PMC01
Pin9 shorted?
YES
NO
YES
NO
YES
NO
YES
NO
Refer to "SMPS(CAPSTAN/12Volt)
Trouble Shooting".
Does the PWM signal appear at IC501
Pin77?
YES
Does the CFG signal appear at
PMC01 Pin1?
YES
Check the Capstan Motor Ass'y.
Are the foil patterns and component
between IC501 Pin87 and PMC01
Pin1 shorted?
Replace IC501.
3-9
NO
NO