Philips CD304 MK II - PCB Servicing Procedures

SERVICING THE SUPPLY PCB
— Remove the 2 screws B (see Fig. 3a).
— When the connectors have been loosened, the supply
PCB can be taken out of the set from the rear.
Attention
The Audio cable is soldered to the decoder PCB.
When mounting the supply PCB care should be taken that
the PCB falls in the guiding on the frame.
SERVICING THE SERVO PCB AND THE DECODER PCB
(see Fig. 3a)
— Remove the top cover.
— Remove the 2 screws A on the PCB holder.
— When the PCB holder is placed in the service position
(see Fig. 4) measurement can be performed on both
the servo PCB and the decoder PCB.
SERVICING THE IR RECEIVER
For practical reasons, it is best to service the IR receiver
by means of the trial and error method, with which
defects, if any, are traced.
Code number of IR receiver: 4822 212 21449.
After removing the bottom plate, this receiver can be con-
nected via plug 91.
Demounting the IR receiver:
— Remove the top cover.
— Remove the loading mechanism
— When clamping spring 555 has been removed, the
receiver can be demounted.
Before mounting the new receiver, be sure to first adapt it
according to the originally mounted version.
as
SERVO PC.B
==
Qe HEAOPHONE PC.B.
CONTROL AND.
DISPLAY PC.By
CONTROL +DISPLAY PCB.
Fig. 3b 36 SOTAT
36 600 87
Fig. 3a:
3G 59987
Fig. 4
CS 5195GB