Read Sony DAV-SB300 / HCD-SB300 Service Manual online
6
HCD-SB300
DECISION TO PASS OR FAIL OF THE OPTICAL
PICK-UP BLOCK
PICK-UP BLOCK
Connection:
Procedure:
1. Connect an oscilloscope to test point 1 pin and 3 pin of
CN901 on the DMB07 board.
2. Turn the power on.
3. Put the disc (LUV-P01) (Part No.: 4-999-032-01) (CD) in to
3. Put the disc (LUV-P01) (Part No.: 4-999-032-01) (CD) in to
playback.
4. Confirm that oscilloscope waveform is clear and check RF
signal level is correct or not.
5. Put the disc (TDV-520CSO) (Part No.: J-2501-236-A) (DVD)
is to playback.
6. Perform confirmation in the same manner as step 4.
Note:
A clear RF signal waveform means that the shape “
◊” can be clearly
distinguished at the center of the waveform.
Checking Location:
DMB07 board
CN901
1
pin
CN901
3
pin
+
–
–
oscilloscope
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
CD: 1.05
±
0.2 Vp-p
DVD: 1.09
±
0.2 Vp-p
RF signal waveform
– DMB07 Board (Component Side) –
CN901
IC701
IC207
IC801
1
7
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