26
HCD-LF1H
DVD SECTION
When the base unit is replaced, perform the adjustment and the
measurement as shown below in this order.
MIRROR TIME ADJUSTMENT (See page 24)
EXECUTING IOP MEASUREMENT (See supplement-1
page 2)
[TEST DISC LIST]
Be sure to use the DVD disc that matches the signal standards of
your region.
•
CD
HLX-A1
(Part No.: J-2501-307-A)
• DVD SL (Single Layer)
HLX-513
(Part No.: J-2501-305-A)
Procedure:
1. Conect an oscilloscope to CN105 pin
6
(RFMON) and CN105
pin
3
(GND) on the DMB14 board.
2. Turn the power on.
3. Insert the CD test disc (refer to the TEST DISC LIST), and
press the
N
button to play the disc back.
4. Confirm that oscilloscope waveform is clear and check RF
signal level is correct or not.
Note:
A clear RF signal waveform means that the shape “
◊
” can be
clearly distinguished at the center of the waveform.
5. Eject the CD disc, and insert the DVD SL test disc (refer to
the TEST DISC LIST), and press the
N
button to play the
disc back.
Checking Location: DMB14 board (Side A)
+
–
CN105 pin
6
(RFMON)
CN105 pin
3
(GND)
oscilloscope
DMB14 board
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 0.52 to 0.92 Vp-p (CD)
0.7 to 1.2 Vp-p (DVD)
SECTION 5
ELECTRICAL ADJUSTMENT
IC102
DMB14 BOARD (SIDE A)
CN105
CN105
Pin No.
6
(RFMON)
CN105
Pin No.
3
(GND)
1
6
3
Ver. 1.3
[RF Level Check]
Connection:
Summary of Contents for HCD-LF1H
Page 78: ...78 HCD LF1H MEMO ...
