Read Sony DAV-SA30 / HCD-SA30 Service Manual online
4
HCD-SA30
NOTES ON HANDLING THE OPTICAL PICK-UP BLOCK
OR BASE UNIT
OR BASE UNIT
The laser diode in the optical pick-up block may suffer electrostatic
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
break-down because of the potential difference generated by the
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also
use the procedure in the printed matter which is included in the
repair parts.
The flexible board is easily damaged and should be handled with
care.
NOTES ON LASER DIODE EMISSION CHECK
The laser beam on this model is concentrated so as to be focused on
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
the disc reflective surface by the objective lens in the optical pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
LASER DIODE AND FOCUS SEARCH OPERATION
CHECK
CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.
that the S curve waveform is output several times.
JIG ON REPAIRING
When repairing this set, etc., connect the extension cable as the
figure shown below.
figure shown below.
MODEL IDENTIFICATION
— BACK PANEL —
Part No.
Model
E, Hong Kong models
Mexican model
AEP, UK models
Singapore model
Australian, Korean models
Taiwan model
Saudi Arabia model
Canadian model
Russia model
PARTS No.
4-243-623-0
s
4-243-623-1
s
4-243-623-2
s
4-243-623-3
s
4-243-623-5
s
4-243-623-6
s
4-243-623-7
s
4-243-623-8
s
4-243-623-9
s
SECTION 1
SERVICING NOTE
NOTES ON DMB03 BOARD EXCHANGE
If a DMB03 board is exchanged, “DRIVE AUTO ADJUSTMENT”
may be unable to be performed. In this case, initialize a memory in
the following procedure.
may be unable to be performed. In this case, initialize a memory in
the following procedure.
1. Starting Test Mode (see page 15).
2. Press the 2 button of remote commander to set the Drive
2. Press the 2 button of remote commander to set the Drive
Manual Operation (see page 17).
3. Press the 6 button of remote commander to set the Memory
Check (see page 19).
4. Press the [CLEAR] button of remote commander to initialize
a memory.
AUTO SERVO ADJUSTMENT
After parts related to the servo circuit (RF amplifier (IC001), DSP
(IC509), motor driver (IC501), EEPROM (IC903) so on) are
replaced, re-adjusting the servo circuit is necessary. Select “ALL”
at “1. DRIVE AUTO ADJUSTMENT” (Refer to page 16 in TEST
MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual
layer).
(IC509), motor driver (IC501), EEPROM (IC903) so on) are
replaced, re-adjusting the servo circuit is necessary. Select “ALL”
at “1. DRIVE AUTO ADJUSTMENT” (Refer to page 16 in TEST
MODE) and adjust DVD-SL (single layer), CD and DVD-DL (dual
layer).
RFMON signal waveform
• Standard value
Test Disc
RFMON level
Standard Value
DVD
TDV-520CSO
1.09
±
0.2Vp-p
(J-2501-236-A)
CD
LUV-P01
1.05
±
0.2Vp-p
(4-999-032-01)
VOLT/DIV: 200 mV
TIME/DIV: 500 ns
TIME/DIV: 500 ns
RFMON level
RFMON Level Check
Perform a RFMON level check before exchanging optical pick-up.
Measurement Point: DMB03 board CN901
1pin (RF) — 3pin (GND)
Ver 1.2
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