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HCD-FLX5D/FLX7D
IC501 SERVICE POSITION
• When you check IC501, please move a power trans former (T911) from a chassis.
DECISION TO PASS OR FAIL OF THE OPTICAL
PIC-UP BLOCK
Connection:
MB board
CN901 1 pin
CN901 3 pin
Procedure:
1.
Connect an oscilloscope to test point 1 pin and 3 pin
of CN901 on the MB board.
2.
Turn the power on.
3.
Put the disc (LUV-P01) (Part No.:4-999-032-01) (CD)
in to playback.
4.
Conf
irm 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) in to playback.
6.
Perform Comfirmation 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.
RF signal waveform
8
oscilloscope
+
–
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
CD: 1.05
0.2 Vp-p
DVD: 1.09
0.2 Vp-p
IC501
chassis
power transformer
(T911)
Checking Location:
– MB BOARD (Component Side) –
7
1
CN901
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