Sony CMT-M90DVD / HCD-M90 Service Manual ▷ View online
2
HCD-M90
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
FM tuner section
Tuning range
North American model:
87.5 - 108.0 MHz
(100-kHz step)
(100-kHz step)
Other models:
87.5 - 108.0 MHz
(50-kHz step)
(50-kHz step)
Antenna
FM wire antenna
Antenna terminals
75 ohms unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Pan American model:
Tuning range
Pan American model:
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,710 kHz
(with the tuning interval
set at 9 kHz)
(with the tuning interval
set at 10 kHz)
531 - 1,710 kHz
(with the tuning interval
set at 9 kHz)
European model:
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
(with the tuning interval
set at 9 kHz)
Other models:
530 - 1,710 kHz
(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
(with the tuning interval
set at 10 kHz)
531 - 1,602 kHz
(with the tuning interval
set at 9 kHz)
Antenna
AM loop antenna, external
antenna terminal
antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
North American model:
North American model:
120 V AC, 60 Hz
European model:
230 V AC, 50/60 Hz
Australian model:
230 V AC, 50/60 Hz
Chinese model:
220 V AC, 50/60 Hz
Other models:
110 – 120 V or
220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
220 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
European model:
European model:
see the name plate
0.3 watts (at the Power
Saving mode)
0.3 watts (at the Power
Saving mode)
Other models:
see the name plate
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/DVD section:
Amplifier/Tuner/Tape/DVD section:
Approx. 159
× 217 ×
335 mm
Mass
Amplifier/Tuner/Tape/DVD section:
Amplifier/Tuner/Tape/DVD section:
Approx. 5.7 kg
Design and specifications are subject to change
without notice.
without notice.
Ver 1.3
3
HCD-M90
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a VOM
or battery-operated AC voltmeter. The “limit” indication is 0.75
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
V, so analog meters must have an accurate low-voltage scale.
The Simpson 250 and Sanwa SH-63Trd are examples of a pas-
sive VOM that is suitable. Nearly all battery operated digital
multimeters that have a 2 V AC range are suitable. (See Fig. A)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
Ω
0.15
µ
F
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE
0
SUR LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
DES PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ
DE FONCTIONNEMENT. NE REMPLACER CES COM-
POSANTS QUE PAR DES PIÈCES SONY DONT LES
NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK
0
OR DOTTED
LINE WITH MARK
0
ON THE SCHEMATIC DIAGRAMS
AND IN THE PARTS LIST ARE CRITICAL TO SAFE
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
This appliance is
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
The following caution label is located inside the
apparatus.
apparatus.
This label is located inside the unit.
Ver 1.3
4
HCD-M90
1.
SERVICING NOTES
...............................................
5
2.
GENERAL
...................................................................
9
3.
DISASSEMBLY
3-1. Disassembly Flow ........................................................... 10
3-2. Side Panel (L), Side Panel (R) ........................................ 11
3-3. Top Panel Section ............................................................ 11
3-4. Mechanical Deck (Tape) ................................................. 12
3-5. Front Panel Section ......................................................... 12
3-6. Back Panel Assy .............................................................. 13
3-7. MAIN Board ................................................................... 13
3-8. CONTROL Board, Noise Shield Case ........................... 14
3-9. DAC Board ...................................................................... 14
3-10. DVD Board ...................................................................... 15
3-11. Mechanism Deck (CDM55D-DVBU8B) ....................... 15
3-12. LOADING Board, Motor (LD) Assy (M901) ................ 16
3-13. RF-240 Board .................................................................. 16
3-14. Tray .................................................................................. 17
3-15. Optical Device ................................................................. 17
3-2. Side Panel (L), Side Panel (R) ........................................ 11
3-3. Top Panel Section ............................................................ 11
3-4. Mechanical Deck (Tape) ................................................. 12
3-5. Front Panel Section ......................................................... 12
3-6. Back Panel Assy .............................................................. 13
3-7. MAIN Board ................................................................... 13
3-8. CONTROL Board, Noise Shield Case ........................... 14
3-9. DAC Board ...................................................................... 14
3-10. DVD Board ...................................................................... 15
3-11. Mechanism Deck (CDM55D-DVBU8B) ....................... 15
3-12. LOADING Board, Motor (LD) Assy (M901) ................ 16
3-13. RF-240 Board .................................................................. 16
3-14. Tray .................................................................................. 17
3-15. Optical Device ................................................................. 17
4.
TEST MODE
.............................................................. 18
5.
ELECTRICAL ADJUSTMENTS
DVD Section ................................................................... 27
Deck Section ................................................................... 28
Deck Section ................................................................... 28
6.
DIAGRAMS
6-1. Block Diagram – DVD SERVO Section – .................... 29
6-2. Block Diagram – DVD MAIN Section (1/2) – ............. 30
6-3. Block Diagram – DVD MAIN Section (2/2) – ............. 31
6-4. Block Diagram – TUNER/TAPE DECK Section – ...... 32
6-5. Block Diagram – AUDIO Section – .............................. 33
6-6. Block Diagram
6-2. Block Diagram – DVD MAIN Section (1/2) – ............. 30
6-3. Block Diagram – DVD MAIN Section (2/2) – ............. 31
6-4. Block Diagram – TUNER/TAPE DECK Section – ...... 32
6-5. Block Diagram – AUDIO Section – .............................. 33
6-6. Block Diagram
– KEY CONTROL/POWER SUPPLY Section – ........... 34
6-7. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 35
6-8. Printed Wiring Board – RF-240 Board (Suffix-11) – ... 36
6-9. Schematic Diagram – RF-240 Board (Suffix-11) – ...... 37
6-10. Printed Wiring Board – RF-240 Board (Suffix-22) – ... 38
6-11. Schematic Diagram – RF-240 Board (Suffix-22) – ...... 39
6-12. Printed Wiring Boards
6-9. Schematic Diagram – RF-240 Board (Suffix-11) – ...... 37
6-10. Printed Wiring Board – RF-240 Board (Suffix-22) – ... 38
6-11. Schematic Diagram – RF-240 Board (Suffix-22) – ...... 39
6-12. Printed Wiring Boards
– DVD (Side A) (Suffix-21)/LOADING Boards – ........ 40
6-13. Printed Wiring Board
– DVD Board (Side B) (Suffix-21) – .............................. 41
6-14. Schematic Diagram
– DVD (1/7) (Suffix-21)/LOADING Boards – .............. 42
6-15. Schematic Diagram
– DVD Board (2/7) (Suffix-21) – ................................... 43
6-16. Schematic Diagram
– DVD Board (3/7) (Suffix-21) – ................................... 44
6-17. Schematic Diagram
– DVD Board (4/7) (Suffix-21) – ................................... 45
6-18. Schematic Diagram
– DVD Board (5/7) (Suffix-21) – ................................... 46
6-19. Schematic Diagram
– DVD Board (6/7) (Suffix-21) – .................................. 47
6-20. Schematic Diagram
– DVD Board (7/7) (Suffix-21) – .................................. 48
6-21. Schematic Diagram
– DVD (1/7) (Suffix-22)/LOADING Boards – .............. 49
6-22. Schematic Diagram
– DVD Board (2/7) (Suffix-22) – ................................... 50
6-23. Schematic Diagram
– DVD Board (3/7) (Suffix-22) – ................................... 51
TABLE OF CONTENTS
6-24. Schematic Diagram
– DVD Board (4/7) (Suffix-22) – ................................... 52
6-25. Schematic Diagram
– DVD Board (5/7) (Suffix-22) – ................................... 53
6-26. Schematic Diagram
– DVD Board (6/7) (Suffix-22) – .................................. 54
6-27. Schematic Diagram
– DVD Board (7/7) (Suffix-22) – .................................. 55
6-28. Printed Wiring Boards
– DVD (Side A) (Suffix-22)/LOADING Boards – ........ 56
6-29. Printed Wiring Board
– DVD Board (Side B) (Suffix-22) – .............................. 57
6-30. Printed Wiring Board – DAC Board – ........................... 58
6-31. Schematic Diagram – DAC Board – .............................. 59
6-32. Printed Wiring Board – TC Board (Suffix-12) – ........... 60
6-33. Schematic Diagram – TC Board (Suffix-12) – ............. 61
6-34. Printed Wiring Board – TC Board (Suffix-32) – ........... 62
6-35. Schematic Diagram – TC Board (Suffix-32) – ............. 63
6-36. Schematic Diagram
6-31. Schematic Diagram – DAC Board – .............................. 59
6-32. Printed Wiring Board – TC Board (Suffix-12) – ........... 60
6-33. Schematic Diagram – TC Board (Suffix-12) – ............. 61
6-34. Printed Wiring Board – TC Board (Suffix-32) – ........... 62
6-35. Schematic Diagram – TC Board (Suffix-32) – ............. 63
6-36. Schematic Diagram
– MAIN Board (1/2) (Suffix-14) – ................................. 64
6-37. Schematic Diagram – MAIN (2/2) (Suffix-14)/
JACK (Suffix-11) Boards – ............................................. 65
6-38. Printed Wiring Boards
– MAIN (Suffix-14)/JACK (Suffix-11) Boards – .......... 66
6-39. Printed Wiring Boards
– MAIN (Suffix-16)/JACK (Suffix-12) Boards – .......... 67
6-40. Schematic Diagram
– MAIN (1/2) Board (Suffix-16) – ................................. 68
6-41. Schematic Diagram – MAIN (2/2) (Suffix-16)/
JACK (Suffix-12) Boards – ............................................. 69
6-42. Printed Wiring Boards
– CONTROL (Suffix-11)/VIDEO Boards – ................... 70
6-43. Schematic Diagram
– CONTROL (Suffix-11)/VIDEO Boards – ................... 71
6-44. Printed Wiring Boards
– CONTROL (Suffix-12)/VIDEO Boards – ................... 72
6-45. Schematic Diagram
– CONTROL (Suffix-12)/VIDEO Boards – ................... 73
6-46. Printed Wiring Board
– SWITCH Board (Suffix-11) – ..................................... 74
6-47. Schematic Diagram – SWITCH Board (Suffix-11) – ... 75
6-48. Printed Wiring Board
6-48. Printed Wiring Board
– SWITCH Board (Suffix-12) – ..................................... 76
6-49. Schematic Diagram – SWITCH Board (Suffix-12) – ... 77
6-50. Printed Wiring Board
6-50. Printed Wiring Board
– POWER Board (Suffix-11) – ....................................... 78
6-51. Schematic Diagram – POWER Board (Suffix-11) – ..... 79
6-52. Printed Wiring Board
6-52. Printed Wiring Board
– POWER Board (Suffix-12, -21) – ............................... 80
6-53. Schematic Diagram
– POWER Board (Suffix-12, -21) – .............................. 81
6-54. IC Pin Function Description ........................................... 88
7.
EXPLODED VIEWS
7-1. Panel (Side) Section ........................................................ 99
7-2. Front Panel Section ........................................................ 100
7-3. Top Panel Section ........................................................... 101
7-4. Chassis Section-1 ........................................................... 102
7-5. Chassis Section-2 ........................................................... 103
7-6. Chassis Section-3 ........................................................... 104
7-7. Mechanism Deck Section (CDM55D-DVBU8B) ......... 105
7-8. Base Unit Section (DVBU8B) ....................................... 106
7-2. Front Panel Section ........................................................ 100
7-3. Top Panel Section ........................................................... 101
7-4. Chassis Section-1 ........................................................... 102
7-5. Chassis Section-2 ........................................................... 103
7-6. Chassis Section-3 ........................................................... 104
7-7. Mechanism Deck Section (CDM55D-DVBU8B) ......... 105
7-8. Base Unit Section (DVBU8B) ....................................... 106
8.
ELECTRICAL PARTS LIST
.............................. 107
Ver 1.3
5
HCD-M90
SECTION 1
SERVICING NOTES
The laser diode in the optical pick-up block may suffer electro-
static 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.
static 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 emis-
sion, observe from more than 30 cm away from the objective lens.
on the disc reflective surface by the objective lens in the optical
pick-up block. Therefore, when checking the laser diode emis-
sion, observe from more than 30 cm away from the objective lens.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
BLOCK OR BASE UNIT
MODEL IDENTIFICATION
– Back Panel –
– Back Panel –
SERVICE POSITION
In checking the control board, prepare jig (extension cable J-2501-
219-B: 1.00 mm Pitch, 10 cores, Length 300 mm).
219-B: 1.00 mm Pitch, 10 cores, Length 300 mm).
Part No.
In checking the tape deck section, prepare jig (extension cable J-
2501-167-A: 1.25 mm Pitch, 17 cores, Length 300 mm).
2501-167-A: 1.25 mm Pitch, 17 cores, Length 300 mm).
Model Name
Part No.
AEP and UK models
4-239-822-0
[]
US and Canadian models
4-239-823-0
[]
Singapore model
4-239-824-0
[]
Australian model
4-240-899-0
[]
Chinese model
4-242-690-0
[]
Connect jig (extension cable J-2501-219-B)
to the control board (CN507) and DVD board (CN101).
to the control board (CN507) and DVD board (CN101).
control board (CN008)
DVD board (CN008)
TC board (CN301)
main board (CN301)
Connect jig (extension cable J-2501-167-A)
to the main board (CN301) and TC board (CN301).
to the main board (CN301) and TC board (CN301).
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
disc in the store is equipped.
Releasing Procedure :
While pressing the
While pressing the
x
key, press the
[ DVD]
key. The message
“UNLOCKED” is displayed and the tray is unlocked.
Note:
When “LOCKED” is displayed, the tray lock is not released by
turning power on/off with the
turning power on/off with the
I
/
1
button.
Ver 1.3
Z
