
48
13VT
-L200
NO
NO
NO
NO
NO
NO
NO
NO
CAPSTAN SERVO TROUBLESHOOTING
FLOW CHART NO.1-11
YES
YES
YES
YES
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
NO
Is pin (75) of IC7701
normal?
Replace the capstan
motor.
Replace IC7701.
Replace IC7701.
Replace the FFC AA-MH.
Check X7701, C7705 and
C7706.
Check the capstan FG
signal line between AM
connector and IC7701.
Does there appear the
capstan FG signal at pin
(85) of IC7701?
Is there the capstan
control voltage applied to
pin (4) of AC connector?
Check the composite
sync. signal at pin (14) of
IC2201, Q2201 and
Q2202, up to pin (84) of
IC7701.
Replace IC7701.
Replace A/C head.
Check " A "
Check " B "
In case of NO GOOD
Does there appear the V-
sync. at pin (84) at
IC7701?
Is there REC CTL signal
output at pins (92), (91) of
IC7701?
Is there capstan control
signal at pin (77) of
IC7701?
Are REC and /or PB
mode inoperative?
Is the FFC AA-MH
normal?
Does the A/C head
operate normally?
Adjust the height of the
A/C head.
Does PB CTL signal
appear at pin (97) of
IC7701?
Does CTL amplifier circuit
of IC7701 (pins (92) to
(97)) operate normally?
(Does the noise appear at
pin (97) when touch
R7774 by hand?)
Only PB mode inoperetive.
Only REC mode inoperetive.
A
B
Is there 16MHz oscillation
at pins (38) and (39) of
IC7701.
Capstan servo does not function.
Summary of Contents for 13VT-CL10
Page 7: ...7 13VT L200 Description Of Controls FRONT LOCATION OF USER S CONTROL REAR ...
Page 56: ...56 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H CHASSIS LAYOUT PWB B PWB D PWB C ...
Page 57: ...57 13VT L200 17 16 19 18 15 14 13 12 11 10 PWB A ...
Page 58: ...58 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H BLOCK DIAGRAM OF TV SECTION ...
Page 59: ...59 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 61: ...61 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 63: ...63 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 67: ...67 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 69: ...69 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 70: ...70 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H OVERALL SCHEMATIC DIAGRAM ...
Page 71: ...71 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 74: ...74 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 1 Unit TV Section ...
Page 75: ...75 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 76: ...76 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN 2 Unit TV Section ...
Page 77: ...77 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 78: ...78 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM POWER Unit TV Section ...
Page 79: ...79 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 80: ...80 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN Unit VCR 1 Section ...
Page 81: ...81 13VT L200 17 16 19 18 15 14 13 12 11 10 ...
Page 82: ...82 13VT L200 8 7 10 9 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM MAIN Unit VCR 2 Section ...