3-9
Capstan Motor Stopped.
Check Power.
Does PWM wave appear at IC501
Pin 77?
Does the CFG signal appear at PMC01
Pin 1?
Check Capstan Motor Ass’y.
Check Components and foil patterns
between PMC01 Pin 1 and IC501
Pin 87 for shorts.
Replace IC501.
Does 12VA appear at PMC01 Pin 2?
Does 2.8V appear at PMC01 Pin 9?
Check Connector and Capstan
Motor Ass’y.
Check the Components and foil Patterns
Connected between IC501 Pin 77 and
PMC01 Pin 9 for shorts.
Does the CFG signal appear at IC501
Pin 87?
Does Capstan PWM appear at IC501
Pin 77?
Check the components and foil pattern
connected between IC501 Pin 77 and
PMC01 Pin 9 for shorts
C.
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
Summary of Contents for VHR-VK310A
Page 65: ...MEMO ...
Page 118: ......