CMT-M90DVD, HCD-M90 — Sony Audio Service Manual (repair manual)

Model
CMT-M90DVD HCD-M90
Pages
127
Size
14.08 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-m90dvd-hcd-m90.pdf
Date

View Sony CMT-M90DVD / HCD-M90 Service Manual online

SERVICE MANUAL
DVD DECK RECEIVER
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
Chinese Model
SPECIFICATIONS
HCD-M90
Ver 1.4  2004.09
9-873-991-05
Sony Corporation
2004I05-1
Personal Audio Company
© 2004.09
Published by Sony Engineering Corporation
HCD-M90 is the Amplifier, DVD player, Tape
Deck and Tuner section in CMT-M90DVD.
Model Name Using Similar Mechanism
NEW
DVD
DVD Mechanism Type
CDM55D-DVBU8B
Section
Base Unit Name
DVBU8B
Optical Pick-up Name
KHM-240AAA (TYPE A)
KHM-270AAA (TYPE B)
TAPE
Model Name Using Similar Mechanism
HCD-M70
Section
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
With 6-ohm loads, both channels driven, from
70 - 20,000 Hz; rated 18 watts per channel
minimum RMS power, with no more than 0.9%
total harmonic distortion from 250 milliwatts to
rated output.
North American model:
Continuous RMS power output (reference):
20 + 20 W
(6 ohms at 1 kHz, 10%
THD)
Total harmonic distortion less than 0.07% (6 ohms at
1 kHz, 12 W)
European, Chinese models:
DIN power output (rated): 15 + 15 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
20 + 20 W
(6 ohms at 1 kHz, 10%
THD)
Music power output (reference):
40 + 40 W
Other models:
The following measured at 230 V AC, 60 Hz
DIN power output (rated): 15 + 15 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
18 + 18 W
(6 ohms at 1 kHz, 10%
THD)
The following measured at 220 V AC, 60 Hz
DIN power output (rated): 12 + 12 W
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
15 + 15 W
(6 ohms at 1 kHz, 10%
THD)
Inputs
AUDIO IN MD (VIDEO) (phono jacks):
Sensitivity 500/250 mV,
impedance 47 kilohms
Outputs
VIDEO OUT:
max. output level
(phono jack)
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
S-VIDEO  OUT:
Y: 1 Vp-p, unbalanced,
(4-pin/mini-DIN jack)
Sync negative,
C: 0.286Vp-p,
load impedance 75 ohms
OPTICAL OUT:
Optical
Wavelength: 660 nm
PHONES:
Accepts headphones with
an impedance of 8 ohms
or more
SPEAKER:
accepts impedance of 6 to
16 ohms.
DVD player section
Laser
Semiconductor laser
(DVD: 
λ=650 nm,
CD: 
λ=780 nm)
Emission duration:
continuous
Frequency response
DVD (PCM 48 kHz):
2 Hz – 22 kHz = (
±1 dB)
CD:  2 Hz – 20 kHz =
(
±1 dB)
Signal-to-noise ratio
More than 90 dB
Dynamic range
More than 90 dB
Video color system format
NTSC, PAL
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 – 13,000 Hz (
±3 dB),
using Sony TYPE I
cassettes
– Continued on next page –
2
HCD-M90
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
North American model:
87.5 - 108.0 MHz
(100-kHz step)
Other models:
87.5 - 108.0 MHz
(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:
530 - 1,710 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)
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)
Antenna
AM loop antenna, external
antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
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
Power consumption
European model:
see the name plate
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:
Approx. 159 
× 217 ×
335 mm
Mass
Amplifier/Tuner/Tape/DVD section:
Approx. 5.7 kg
Design and specifications are subject to change
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.
Notes on chip component replacement
• Never reuse a disconnected chip component.
• 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.
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
WT-540A. Follow the manufacturers’ instructions to use these
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)
Fig. A.
Using an AC voltmeter to check AC leakage.
1.5 k
0.15 
µ
F
AC
voltmeter
(0.75 V)
To Exposed Metal
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.
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.
This appliance is
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
The following caution label is located inside the
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
4.
TEST  MODE
.............................................................. 18
5.
ELECTRICAL  ADJUSTMENTS
DVD Section ................................................................... 27
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
– 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
– 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
– 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
– SWITCH Board (Suffix-12) – ..................................... 76
6-49. Schematic Diagram  – SWITCH Board (Suffix-12) – ... 77
6-50. Printed Wiring Board
– POWER Board (Suffix-11) – ....................................... 78
6-51. Schematic Diagram  – POWER Board (Suffix-11) – ..... 79
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
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.
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.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
MODEL  IDENTIFICATION
– 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).
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).
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). 
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).
RELEASING  THE  DISC  TRAY  LOCK
The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Releasing Procedure :
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
I
/
1
button.
Ver 1.3
Z

Download Sony CMT-M90DVD / HCD-M90 Service Manual (Repair Manual)

Here you can view online or download Sony CMT-M90DVD / HCD-M90 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony CMT-M90DVD / HCD-M90 Audio. Information contained in Sony CMT-M90DVD / HCD-M90 service manual (repair manual) typically includes:

  • Disassembly, troubleshooting, programming, maintenance, remote, adjustment, installation and setup instructions.
  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).