Sony hcd-gn1000d Service Manual page 24

HCD-GN1000D
QQ
3 7 63 1515 0
3. Mode: Playback
MAIN
test tape
board
P-4-A100
CN510
(10 kHz, –10 dB)
pin 1
L-CH
L
set
R
R-CH
pin 3
waveform of oscilloscope
in phase 45 °
good
4. After the adjustments, apply suitable locking compound to
the pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
TE
L 13942296513
forward
DVD SECTION
[TEST DISC LIST]
Use the following test disc on test mode.
• CD: YEDS-18 (PART No. 3-702-101-01)
PATD-012 (PART No. 4-225-203-01)
• DVD (SL)
NTSC HLX-503 (PART No. J-6090-069-A)
www
HLX-504 (PART No. J-6090-088-A)
PAL HLX-506 (PART No. J-6090-077-A)
• DVD (DL)
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)
24
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oscilloscope
pin 2
H
V
90 ° 135 ° 180 °
wrong
reverse
or
or
x ao
y
i
or
http://www.xiaoyu163.com
8
Note: When the BASE UNIT is replaced, perform the mirror time
adjustment and IOP measurement
(Refer to page 20 of the TEST MODE).
[RFMON Level Check]
Connection:
DMB15 board
CN105 pin 6 (RFMON)
CN105 pin 3 (GND)
Procedure:
1. Connect an oscilloscope to CN105 pin 6 (RFMON) and
CN105 pin 3 (GND) on the DMB15 board.
2. Turn the power on.
3. Set the test disc (DVD: HLX-503 (NTSC) or HLX-504 (PAL),
CD: YEDS-18) on the tray and press Y button to playback.
4. Confirm that oscilloscope waveform is clear and check
RFMON signal level is correct or not.
Note: A clear RFMON signal waveform means that the shape "◊" can be
clearly distinguished at the center of the waveform.
RFMON signal waveform
Q Q
3 6 7 1 3
Checking Location: DMB15 board (Side A)
DMB15 BOARD
IC102
IC101
CN106
CN105 pin 6 (RFMON)
u163
.
2 9 9 4 2 8
oscilloscope
+
–
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level: 0.58 to 1.23 Vp-p (DVDSL)
1 5 0 5 8 2 9 9 4
0.57 to 1.1 Vp-p (CD)
IC104
IC201
6 1
CN105
CN105 pin 3 (GND)
m
co
9 9
2 8 9 9