Sony HCD-CPX11 Service Manual ▷ View online
5
HCD-CPX11
JUDGING WHETHER THE SWITCHING REGULATOR IS GOOD OR DEFECTIVE
JUDGING WHETHER THE SUB POWER BOARD IS GOOD OR DEFECTIVE
switching regulator
CN4
•
The switching regulator is judged to be good when the terminal voltage at the switching regulator CN4 is 12 V.
SUB POWER board
MAIN board
CN302
• It is judged to be good when the voltage between pin 2 (+4 V) and pin 3 (GND) of the MAIN board CN302 is 4 V.
6
HCD-CPX11
SERVICE POSITION OF THE CD MECHANISM DECK
CD mechanism deck
• Remove the front panel and the circuit boards once in order to remove the CD mechanism deck.
After removing the CDM, reassemble the panel and the circuit boards back to the original state.
After removing the CDM, reassemble the panel and the circuit boards back to the original state.
Extension cable should be used.
(J-2501-248-A)(1.00mm/27P/300L)
(J-2501-248-A)(1.00mm/27P/300L)
COVER BOARD
cover board
• This is the board used to blind the slot. Do not remove.
7
HCD-CPX11
FIXING THE TC CABLES
PREVENTING THE SUB POWER CABLES FROM SAGGING DOWN
• To prevent cables from noise, fix the cables with the lead pin so that the cables do not contact with the flexible board.
lead pin
TC board
NG
• Be careful not to contact with the CD mechanism deck.
SUB POWER board
SUB POWER cable
8
HCD-CPX11
CAUTION SO THAT THE FLEXIBLE BOARD SHOULD NOT CONTACT WITH THE HEAT SINK
• When the flexible board is replaced, give the folding at the same position of the new flexible board with that of the old flexible board.
S-MASTER AMP board
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