MHC-V7D
26
CD/DVD SECTION
[TEST DISC LIST]
Use the following test disc on test mode.
• CD:
YEDS-18 (PART No. 3-702-101-01)
or
PATD-012 (PART No. 4-225-203-01)
HLX-A1 (PART No. J-2501-307-A)
• DVD (SL)
NTSC
HLX-503 (PART No. J-6090-069-A)
or
HLX-504 (PART No. J-6090-088-A)
HLX-513 (PART No. J-2501-305-A)
PAL
HLX-506 (PART No. J-6090-077-A)
• DVD (DL)
NTSC
HLX-501 (PART No. J-6090-071-A)
or
HLX-505 (PART No. J-6090-089-A)
HLX-514 (PART No. J-2501-306-A)
PAL
HLX-507 (PART No. J-6090-078-A)
Note:
When the BASE UNIT is replaced, perform the Execute
IOP measurement
(Refer to page 22).
FOCUS BIAS CHECK
Procedure:
1. Connect the oscilloscope to CN302 pin 17 (RF) and CN302
pin 1 (GND) on the MOTHERBOARD board.
2. Press the [
?/1
] button to turn the power on, and press the
[FUNCTION] button to select DVD/CD function.
3. Set the test disc (CD: YEDS-18) on the tray and press [
N
]
button to playback.
4. Con
fi
rm that oscilloscope waveform is as shown in the
fi
gure
below (eye pattern).
A good eye pattern means that the diamond shape (
) in the
center of the waveform can be clearly distinguished.
Checking Location:
-MOTHERBOARD Board (COMPONENT SIDE)-
+
–
MOTHERBOARD board
oscilloscope
(DC range)
CN302 pin 17 (RF)
CN302 pin 1 (GND)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
level:
1.1 ± 0.25 Vp-p (DVDSL)
1.0 ± 0.25 Vp-p (CD)
CN302
pin 17 (RF)
pin 1 (GND)
Summary of Contents for MHC-V7D
Page 103: ...MEMO MHC V7D 103 Ver 1 1 ...