Panasonic PV-4601 A Service Manual page 16

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3.2.6. Easy check of Power Supply Ass'y, Hi-Fi Audio C.B.A., UHF/VHF
Tuner/TV Demodulator Unit
Power Supply Ass'y, Hi-Fi Audio C.B.A., UHF/VHF Tuner/TV Demodulator Unit can be
checked easily through holes in the bottom of the frame after removing the Bottom
Panel. You can check connector pins of following units and C.B.A.s.
-
P1051 (Pins of Power Supply Ass'y)
-
Pins of UHF/VHF Tuner/TV Demodulator Unit.
-
Model : D, E
P4201,P4202,P4203 (Pins of Hi-Fi Audio C.B.A.)
Test Point purpose
TP6001
To confirm mechanism
movement without a
cassette, the detection
of the Supply / Takeup
Photo Transistors,
Reel Sensor, and
Cylinder Lock will be
inhibited.
TP6003
To defeat the Auto
Tracking Function.
(Maintain the Neutral
Position.)
TP6011
A check Terminal for
judgment of the IC6001
microprocessor.
The microprocessor is
OK if there is Scan
pulse output.
TP6301
A check Terminal for
judgment of the IC6301
microprocessor.
The microprocessor is
OK if there is pulse
output.
operation
Ground the
TP6001
Place a jumper
between TP6003
and
TP6009(+5V).
16

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