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KV-20/13VM30/31
RM-Y138/W
Capstan doesn't rotate
L Is 14VA applied to P508 pin 5? |
Yes |
Is 3 58MHz input to
servo IC501 pin 42?
Yes ,
Ne
Are the pulses of serial data
and clock input to servo
1C501 pins 53 and 54?
Yes |
Does the C.FG signal appear at P508
pin 4 (or PJDO1 pin 12)?
Yes |
Is the C FG signal input to servo
1C501 pin 37?
Yes |
Is the CTL pulse input to
|
servo IC501 pin 36?
Yes |
Does 27V appear at servo
|
IC501 pin 27?
Yes |
Does 2.7V appear at P508
|
pin 7 (or PJDO1 pin 9)?
-
46
-
The noise appear periodically
during playback
Does the CTL pulse appear
|
at servo IC501 pin 35?
Yes |
L Does 2 6V appear at servo
|
IC501 pin 15?
Yes |
Does the correct voltage
appear at syscon IC16 pint5
according to the speed?
Yes !
Is the CTL divide signal
applied to syscon IC16 pin 25?
Yes
Is the C.FG divide signal applied to
syscon IC16 pin 32?
Yes |
|
Does the CTL pulse move
|
when tracking?
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