Read Panasonic AG-TL750E / AG-TL750B Service Manual online
1-7
Table 1-3-4(a)
E-03
E-02
E-01
SP REEL
ERROR
ERROR
UNLOADING
ERROR
ERROR
LOADING
ERROR
ERROR
Rotary encoder
↓
MAIN board
IC606 4 LS1
5 LS2
6 LS3
7 LS4
IC606 4 LS1
5 LS2
6 LS3
7 LS4
Loading does not
complete.
complete.
Unloading does
not complete.
not complete.
Supply reel does
not rotate.
not rotate.
Supply reel FG
↓
MAIN board
IC601 1 SUP FG
IC601 1 SUP FG
CPU checks the rotary encoder
output to see the mechanism
position data and identifies the
error when loading does not
complete in 8 seconds.
output to see the mechanism
position data and identifies the
error when loading does not
complete in 8 seconds.
CPU checks the rotary encoder
output to see the mechanism
position data and identifies the
error when unloading does not
complete in 8 sec.
output to see the mechanism
position data and identifies the
error when unloading does not
complete in 8 sec.
CPU identifies error when supply
reel FG has not been detected for
specified period of time in a mode
in which the SP reel should rotate.
reel FG has not been detected for
specified period of time in a mode
in which the SP reel should rotate.
3H : Approx. 5 sec.
L12H : Approx. 18 sec.
L24H : Approx. 36 sec.
L24H : Approx. 36 sec.
24H : Approx. 36 sec.
48H : Approx. 72 sec.
72H : Approx. 2 min.
48H : Approx. 72 sec.
72H : Approx. 2 min.
120H : Approx. 3 min.
168H : Approx. 4 min.
240H : Approx. 6 min.
168H : Approx. 4 min.
240H : Approx. 6 min.
Power goes off
automatically.
automatically.
Power goes off
automatically.
automatically.
Power goes off
automatically.
automatically.
Loading motor failure,
MDA (IC602 on MAIN board) failure,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection,
Loading belt defect,
Mechanism part caught or stuck,
Cassette tape defect.
MDA (IC602 on MAIN board) failure,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection,
Loading belt defect,
Mechanism part caught or stuck,
Cassette tape defect.
Capstan motor or drive circuit defect,
Belt (Capstan), clutch ass'y or idler gear
unit defect,
Tape cut.
Belt (Capstan), clutch ass'y or idler gear
unit defect,
Tape cut.
E-04
DRUM
ERROR
ERROR
Drum motor
does not rotate.
does not rotate.
Drum PG/FG
↓
MAIN board
TP616 DPG
TP616 DPG
CPU identifies error when drum
FG has not been detected for
more than 3 seconds in a mode in
which the drum motor should
rotate.
FG has not been detected for
more than 3 seconds in a mode in
which the drum motor should
rotate.
Power goes off
automatically.
automatically.
Drum ass'y defect,
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
E-06
CAPSTAN
ERROR
ERROR
Capstan motor
does not rotate.
does not rotate.
Capstan FG
↓
MAIN board
TP617 CFGA
TP617 CFGA
CPU identifies error when capstan
FG has not been detected for
more than 2 seconds when pinch
roller is ON in a mode in which the
capstan should rotate.
FG has not been detected for
more than 2 seconds when pinch
roller is ON in a mode in which the
capstan should rotate.
Power goes off
automatically.
automatically.
Capstan motor defect,
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
Servo circuit defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
E-07
EJECT
ERROR
ERROR
Ejection does not
occur.
occur.
Cassette sensor
↓
MAIN board
IC606 $
IC606 $
REC SAFETY
switch
switch
↓
MAIN board
IC606 %
IC606 %
When ejection does not complete
in 8 seconds.
in 8 seconds.
Cassette sensor output should be
0 V at the intake end position and
5 V in other positions.
5 V in other positions.
REC SAFETY switch should be 0 V
during ejection and 5 V at the
eject end position.
during ejection and 5 V at the
eject end position.
Cassette is
absorbed then
power goes off
automatically.
absorbed then
power goes off
automatically.
Cassette housing failure,
Worm clutch ass'y defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
Worm clutch ass'y defect,
Power (MOTOR 12 V) defect,
Circuit protector (CP601 on MAIN board)
disconnection.
E-08
DEW
ERROR
ERROR
Condensation of
dew.
dew.
DEW sensor
↓
MAIN board
IC601 A
IC601 A
Dew error caused by
condensation is identified when
pin 86 of IC601 is higher than 4 V.
condensation is identified when
pin 86 of IC601 is higher than 4 V.
Dew error disappears when pin 86
of IC601 is lower than 3V.
of IC601 is lower than 3V.
Cassette is
ejected, drum
starts rotation and
cassette will not
be accepted until
the condensation
disappears.
ejected, drum
starts rotation and
cassette will not
be accepted until
the condensation
disappears.
If the error display does not disappear, the
dew sensor may be defective.
dew sensor may be defective.
E-13
TAPE
DEFECTIVE
DEFECTIVE
Tape is cut.
Begin sensor
↓
MAIN board
IC601 U BEGIN
IC601 U BEGIN
End sensor
↓
MAIN board
IC601 I END
IC601 I END
This error is identified when both
the tape begin and end sensors
detect leader (the level becomes
Low) when a cassette is inserted.
the tape begin and end sensors
detect leader (the level becomes
Low) when a cassette is inserted.
Cassette is
ejected then
power goes off
automatically.
ejected then
power goes off
automatically.
Tape cut,
Sensor defect.
Sensor defect.
E-05
TU REEL
ERROR
ERROR
Take-up reel does
not rotate.
not rotate.
Take-up reel FG
↓
MAIN board
IC601 2 TU FG
IC601 2 TU FG
CPU identifies error when take-up
reel FG has not been detected for
specified period of time in a mode
in which the TU reel should rotate.
reel FG has not been detected for
specified period of time in a mode
in which the TU reel should rotate.
3H : Approx. 5 sec.
L12H : Approx. 18 sec.
L24H : Approx. 36 sec.
L24H : Approx. 36 sec.
24H : Approx. 36 sec.
48H : Approx. 72 sec.
72H : Approx. 2 min.
48H : Approx. 72 sec.
72H : Approx. 2 min.
120H : Approx. 3 min.
168H : Approx. 4 min.
240H : Approx. 6 min.
168H : Approx. 4 min.
240H : Approx. 6 min.
Power goes off
automatically.
automatically.
Capstan motor or drive circuit defect,
Belt (Capstan), clutch ass'y or idler gear
unit defect,
Tape cut.
Belt (Capstan), clutch ass'y or idler gear
unit defect,
Tape cut.
Display
Description
Sensors
Detection Method
Possible Causes
Error
Code
Code
Operation after
Detection
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