Sony CMT-M100MD / HCD-M10 Service Manual ▷ View online
29
HCD-M10
RF PLL Free-run Frequency
Procedure :
1. Connect frequency counter to TP (XPCK) with lead wire.
1. Connect frequency counter to TP (XPCK) with lead wire.
2. Turn the power on.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
3. Put the disc (YEDS-18) in to play the number five track.
Confirm that reading on frequency counter is 4.3218MHz.
Test Point Location :
[CD BOARD] — SIDE B —
+
–
–
frequency counter
CD BOARD
TP (XPCK)
TP
(DVC 1.65V)
(DVC 1.65V)
TP
(TE)
(TE)
IC101
IC103
TP
(XPCK)
(XPCK)
TP
(RFAC)
(RFAC)
30
HCD-M10
Other faults are suspected.
Check the mechanism parts (spindle motor, sled motor, etc.).
Check the mechanism parts (spindle motor, sled motor, etc.).
Start
NG
NG
NG
OK
OK
OK
Laser Power Check
6-2.
(See page 33)
6-3.
(See page 33)
6-4.
(See page 34)
Iop Compare
Auto Check
Replace optical pick-up or MDM-7B4M
MD SECTION
Note 1:
About “R”
As this unit has only a few buttons, some operations require the use of remote commander (RM-SM100E/provided with unit) buttons. These
operations are indicated as “R” in this manual.
Example:
As this unit has only a few buttons, some operations require the use of remote commander (RM-SM100E/provided with unit) buttons. These
operations are indicated as “R” in this manual.
Example:
MENU/NO “R”
...Press the
[MENU/NO]
button of the remote commander.
Note 2:
Incorrect operations may be performed if the MD test mode is not entered properly.
In this case, press the
In this case, press the
?/1
button to turn the power off, and retry to enter the MD test mode.
1. PARTS REPLACEMENT AND ADJUSTMENT
If malfunctions caused by optical pick-up such as sound skipping are suspected, follow the following check.
Check before replacement
31
HCD-M10
Flow Chart for Adjustment
YES
NO
NO
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Start
IC195 replacement
OP or IC195 replacement
IC101, IC195 or D101
replacement
OP, IC190 or IC195
replacement
After turning the power off and on, initialises the non-volatile
memory (EEPROM).
memory (EEPROM).
7. Initial setting of adjustment value (See page 36)
9. Temperature compensation offset adjustment (See page 36)
10. Laser power adjustment (See page 36)
OP, IC102, IC190 or IC195
replacement
OP, IC101, IC151 or IC195
replacement
OP replacement
Spindle motor replacement
6-4. Auto check (See page 34)
End
11. Iop NV save (See page 37)
12.Traverse adjustment (See page 37)
13. Focus bias adjustment (See page 38)
16. Auto gain control output level adjustment (See page 39)
13. Focus bias adjustment (See page 38)
16. Auto gain control output level adjustment (See page 39)
In Err display mode, write OP change iop
In Err display mode, Spdl change
•Abbreviation
OP: Optical pick-up
OP: Optical pick-up
32
HCD-M10
2. PRECAUTIONS FOR CHECKING LASER DIODE
EMISSION
To check the emission of the laser diode during adjustments, never
view directly from the top as this may lose your eye-sight.
view directly from the top as this may lose your eye-sight.
3. PRECAUTIONS FOR USE OF OPTICAL PICK-
UP (KMS-260E)
As the laser diode in the optical pick-up is easily damaged by static
electricity, solder the laser tap of the flexible board when using it.
Before disconnecting the connector, desolder first. Before connecting
the connector, be careful not to remove the solder. Also take adequate
measures to prevent damage by static electricity. Handle the flexible
board with care as it breaks easily.
electricity, solder the laser tap of the flexible board when using it.
Before disconnecting the connector, desolder first. Before connecting
the connector, be careful not to remove the solder. Also take adequate
measures to prevent damage by static electricity. Handle the flexible
board with care as it breaks easily.
Optical pick-up flexible board
4. PRECAUTIONS FOR ADJUSTMENTS
1. When replacing the following parts, perform the adjustments
and checks with
in the order shown in the following table.
2. Set the MD test mode when performing adjustments.
After completing the adjustments, exit the MD test mode.
Perform the adjustments and checks in “Group Service” of the
MD test mode.
Perform the adjustments and checks in “Group Service” of the
MD test mode.
3. Perform the adjustments to be needed in the order shown.
4. Use the following tools and measuring devices.
•
4. Use the following tools and measuring devices.
•
Check Disc (TDYS-1) (Part No. : 4-963-646-01)
•
Test Disk (MDW-74/GA-1) (Part No. : 4-229-747-01)
•
Laser power meter LPM-8001 (Part No. : J-2501-046-A)
or
MD Laser power meter 8010S (Part No. : J-2501-145-A)*
or
MD Laser power meter 8010S (Part No. : J-2501-145-A)*
1
• Oscilloscope (Measure after performing CAL of prove.)
• Digital voltmeter
• Thermometer
• Jig for checking BD board waveform
• Digital voltmeter
• Thermometer
• Jig for checking BD board waveform
(Part No. : J-2501-196-A)
pick-up
flexible board
laser tap
5. When observing several signals on the oscilloscope, etc.,
make sure that VC and ground do not connect inside the
oscilloscope.
(VC and ground will become short-circuited.)
oscilloscope.
(VC and ground will become short-circuited.)
6. Using the above jig enables the waveform to be checked without
the need to solder.
(Refer to Servicing Notes on page 8.)
(Refer to Servicing Notes on page 8.)
7. As the disc used will affect the adjustment results, make sure
that no dusts nor fingerprints are attached to it.
*
1
Laser power meter
When performing laser power checks and adjustment (electrical
adjustment), use of the new MD laser power meter 8010S (Part
No. J-2501-145-A) instead of the conventional laser power
meter is convenient.
It sharply reduces the time and trouble to set the laser power
meter sensor onto the objective lens of optical pick-up.
adjustment), use of the new MD laser power meter 8010S (Part
No. J-2501-145-A) instead of the conventional laser power
meter is convenient.
It sharply reduces the time and trouble to set the laser power
meter sensor onto the objective lens of optical pick-up.
7.
Initial setting of adjustment value
8.
Recording of Iop information
9.
Temperature compensation
offset adjustment
10. Laser power adjustment
11. Iop NV Save
12. Traverse adjustment
13. Focus bias adjustment
16. Auto gain adjustment
6-4. AUTO CHECK
Optical
Pick-up
IC101
IC102
IC151
IC190
IC195
D101
Parts to be replaced
Adjustment
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