43
VC-A565U/H965U
1
2
FLOW CHART NO.16
Capstan servo does not function.
Only PB mode inoperative
YES
Only REC mode inoperative
YES
YES
NO
YES
NO
NO
NO
NO
NO
Check peripheral
circuit of pin(41) of
IC701, C715,
C7716 and R708.
Is there 14.318MHz
oscillation at pin
(32) and (33) of
IC701?
Check peripheral
circuit of X701.
YES
YES
YES
Does pin(24) of
IC701 operate
normally?
Check "
1
"
Check "
2
"
Check capstan
motor unit and/or
replace.
Is there CAP-
ERROR at pin(28)
of IC701?
Replace IC701.
Replace A/C head.
YES
YES
YES
NO
NO
NO
Is there CAP-
ERROR signal at
pin (28) of IC701?
NO
NO
NO
Replace IC701.
Does PB CTL
signal appear at
pin (58) of IC701?
Replace IC701.
Is there REC CTL
signal output at
pin(57) and (56)
of IC701?
Does PB CTL
signal appear at
pin(58) of IC701?
Does A/C head
operate normally?
Adjust the height
of the A/C head.
Does the capstan
FG signal appear
at pin (49) of IC-
701?
Check the capstan
FG signal line bet-
ween pin(1) of
P701 and pin(49)
of IC701.
Check peripheral
circuit of AC
connector.
Is the V-SYNC
signal(reference) at
pin(41) of IC701?
Are REC and/or PB
mode inoperative?
YES
Summary of Contents for VC-A565U
Page 49: ...49 VC A565U H965U M E M O ...
Page 50: ...VC A565U H965U VC A565U H965U 50 51 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...
Page 51: ...VC A565U H965U VC A565U H965U 52 53 SIGNAL FLOW BLOCK DIAGRAM A565U ...
Page 52: ...VC A565U H965U VC A565U H965U 54 55 SIGNAL FLOW BLOCK DIAGRAM A965U ...
Page 53: ...56 VC A565U H965U POWER CIRCUIT BLOCK DIAGRAM ...
Page 55: ...56 VC A565U H965U POWER CIRCUIT BLOCK DIAGRAM ...
Page 64: ...70 VC A565U H965U M E M O ...