36
HCD-FX900W
DVD SECTION
When the base unit is replaced, perform the adjustment and the
measurement as shown below in this order.
EXECUTING IOP MEASUREMENT (See page 33)
[TEST DISC LIST]
Be sure to use the DVD disc that matches the signal standards of
your region.
•
CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)
• DVD SL (Single Layer)
NTSC : HLX-503
(Part No.: J-6090-069-A)
HLX-504
(Part No.: J-6090-088-A)
PAL : HLX-506
(Part No.: J-6090-077-A)
• DVD DL (Dual Layer)
NTSC : HLX-501
(Part No.: J-6090-071-A)
HLX-505
(Part No.: J-6090-089-A)
PAL : HLX-507
(Part No.: J-6090-078-A)
[RF Level Check]
Connection:
Procedure:
1. Conect an oscilloscope to CN105 pin
6
(RFMON) and CN105
pin
3
(GND) on the DMB12 board.
2. Turn the power on.
3. Insert the CD test disc (refer to the TEST DISC LIST), and
press the
H
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 disk (refer to
the TEST DISC LIST), and press the
H
button to play the
disc back.
Checking Location: DMB12 board (Side A)
+
–
CN105 pin
6
(RFMON)
CN105 pin
3
(GND)
oscilloscope
DMB12 board
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 0.57 to 1.1 Vp-p (CD)
0.58 to 1.23 Vp-p (DVD)
SECTION 6
ELECTRICAL ADJUSTMENT
1
CN105 Pin
3
(GND)
CN105 Pin
6
(RFMON)
3
6
IC101
IC201
CN105
HDMI OUT
(DVD ONLY)
DMB12 BOARD
(SIDE A)
DIAT SECTION
DIAT SIGNAL RF LEVEL ADJUSTMENT
This adjustment is performed in order to adjust the transmission
distance of RF signal for DIAT communication.
Connection:
Procedure:
1. Connect the oscilloscope to TP1815 and GND on the DIAT
TX XM board.
2. Connect DIR-T1 to DIR-T1 jack
(DIAT TX XM board: J1801).
3. Confirm trigger is locked.
4. Adjust RV1801 on the DIAT TX XM board so that the center
of waveform becomes 2.2 to 2.4 Vp-p.
RF Signal Reference Waveform
VOLT/DIV : 500 mV
TIME/DIV : 500 ns
level : 2.2 to 2.4 Vp-p
TP1815
DIAT TX XM board
oscilloscope
Adjustment Location:
TP1815
J1801
RV1801
— DIAT TX XM Board (SIDE A) —
Ver. 1.1
