Zenith XBV243 Service Manual page 18

TROUBLESHOOTING (CONTINUED)
(3) When the Capstan Motor doesn't run
When the Capstan Motor doesn't run,
Does 12VA appear at PMC01?
YES
Does 2.8V appear at PMC01?
YES
Check PMC01 and the Capstan
Motor Ass'y.
Are the foil patterns and Components
between IC501 Pin25 and PMC01
Pin9 short?
Does the CFG signal come into
IC501 Pin40?
YES
Does the Capstan PWM signal appear at
IC501 Pin25?
YES
Are the foil patterns and Components
between IC501 Pin 25 and PMC01
Pin9 short?
VR168 - 923-03485
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ELECTRICAL
N O
NO
YES
YES
N O
N O
3-6
Refer to "SMPS (CAPSTAN/12Volt)
Trouble Shooting".
Does the PWM signal appear at
IC501 Pin25?
NO
Does the CFG signal appear at
PMC01 Pin1?
NO
Check the Capstan Motor Ass'y.
Are the foil patterns and component
between IC501 Pin40 and PMC01
Pin1 short?
Replace IC501.
D35E COMBO - ELECTRICAL