44
13VT-R100/R150
13VT-CR10
FLOW CHART NO.1-4
REC/PB TROUBLESHOOTING
L
OADING SENSOR TROUBLESHOOTHING
FLOW CHART NO.1-5
REC / PB do not
function.
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
YES
Are both start and end
sensor become "H"
level?
Is master cam at "PB"
position?
Is head switching pulse
detected?
Check Q7703 and
Q7704.
Check cassette tape.
Is loading motor rotate?
NO
NO
NO
NO
NO
NO
See FLOWCHART
NO. 1-5
Are normal mecha
position signal at pins
(6) and (7) of IC2001?
Check condition of
supply gear and master
cam.Check D7704 and
D7705.
Check IC2001.
See FLOWCHART
NO.1- 6.
See FLOWCHART
NO. 1-10.
NO
See FLOWCHART
NO. 1-8.
NO
Replace idle wheel
assembly.
Is drum motor rotate?
Is capstan motor rotate?
Is the wheel that
engaged to idle reel
rotate?
See FLOWCHART
NO. 1-11.
YES
YES
YES
YES
Is AT 12V at pin (9) and
(10) of IC7706?
Check AT 12V line.
Replace the FFC.
Replace IC7706.
Is the voltage of pin (13) and
(15) of IC7706 becoming
as shown on the right table?
Disconnect the AL connector.
When the external DC supply
given to the motor terminal,
is the motor functioning?
(The voltage is DC 8V.)
Loading sensor is not
functioning.
Is the control signal LM_REV
at pin (12) and LM_FWD at
pin (11) of IC7706 correct?
(Please refer to the data on
the right table)
Check pin (90) and
(91) of IC2001 all the
way up to pin (12) and
(11) of IC7706.
Check the position of
relay gear, master cam
and shifter. Replace
the loading motor.
Front rotate
(loading direction)
Back rotate
(unloading direction)
Stop
Pin (12)
L
H
(H:0.6V), (L:0V)
L
H
Pin (11)
H
L
L
H
Front rotate
Back rotate
Pin (13)
11 V
1 V
Pin (15)
1 V
11 V
Summary of Contents for 13VT-CR10
Page 64: ...71 13VT R100 R150 13VT CR10 6 5 4 3 2 1 A B C D E F G H SCHEMATIC DIAGRAM CRT Unit ...
Page 72: ...85 13VT R100 R150 13VT CR10 6 5 4 3 2 1 A B C D E F G H PWB C POWER Unit Component Side ...
Page 73: ...86 13VT R100 R150 13VT CR10 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Component Side ...
Page 74: ...87 13VT R100 R150 13VT CR10 6 5 4 3 2 1 A B C D E F G H PWB A MAIN Unit Chip Parts Side ...