Sony HCD-NXM2D User manual

HCD-NXM2D
E Model
SERVICE MANUAL
DISPLAY SIDE Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-968-01
2004F02-1
© 2004.06
SPECIFICATIONS
Ver 1.0 2004. 06
– Continued on next page –
•HCD-NXM2D is the Amplifier, DVD player,
tape deck and tuner section in DHC-NXM2D.
Model Name Using Similar Mechanism NEW
DVD DVD Mechanism Type CDM81A-DVBU60
Section Base Unit Name DVBU60
Optical Pick-up Name DBU-3
TAPE Model Name Using Similar Mechanism HCD-CPX22
Section
Main unit
Amplifier section
The following measured at AC 120, 127, 220, 240 V, 50/60 Hz
DIN power output (rated): 60 + 60 watts
(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 75 + 75 watts
(6 ohms at 1 kHz, 10% THD)
Sub woofer: 120 watts
(4 ohms at 100 Hz, 10% THD)
Inputs
VIDEO/SAT IN (phono jacks):
voltage 250/450 mV, impedance 47
kilohms
MIC1/MIC2 (phone jacks): sensitivity 1 mV, impedance 10
kilohms
Outputs
VIDEO/SAT OUT (phono jacks):
voltage 250 mV, impedance 1 kilohm
VIDEO OUT (phono jack): max. output level
1 Vp-p, unbalanced, Sync
negative, load impedance
75 ohms
S VIDEO OUT (4-pin/mini-DIN jack):
Y: 1 Vp-p, unbalanced,
Sync negative,
C: 0.286 Vp-p, load
impedance 75 ohms
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
PB, PR: 0.7 Vp-p, 75 ohms
DIGITAL OUT (Square optical connector jack, rear panel)
Wavelength: 660 nm
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
FRONT SPEAKER: Use only the supplied
speaker SS-NXM4D
SUB WOOFER SPEAKER:
Use only the supplied
speaker SS-WG4D
Disc player section
System Compact disc and digital
audio and video system
Laser Semiconductor laser

2
HCD-NXM2D
Notes on chip component replacement
•Never reuse a disconnected chip component.
•Notice that the minus side of a tantalum capacitor may be
damaged by heat.
Flexible Circuit Board Repairing
•Keep the temperature of soldering iron around 270˚C
during 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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous
radiation exposure.
This appliance is classified as
a CLASS 1 LASER product.
This label is located on the rear
exterior.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON 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
PUBLISHED BY SONY.
(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)
Video color system format
Latin American model:
NTSC
Other models: NTSC, PAL
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 50 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz (50 kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Latin American models: 530 – 1,710 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)
Saudi Arabian models: 531– 1,602 kHz
(with the interval set at 9 kHz)
Other models: 531 – 1,602 kHz
(with the interval set at 9 kHz)
530 – 1,710 kHz
(with the interval set at 10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
Saudi Arabian model: 120 – 127 V or 220 – 240 V AC,
50/60 Hz
Adjustable with voltage selector
Thai model: 220 V AC, 50/60 Hz
Other models: 120 V or 220 – 240 VAC, 50/60 Hz
Adjustable with voltage selector
Power consumption 220 watts
Dimensions (w/h/d)
Approx. 230 x 290 x 355 mm
Mass Approx. 6.9kg
Supplied accessories: Remote Commander (1)
R6 (size AA) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Video cable (1)
Speaker cords (3)
Speaker support (2)
Screw + 3.5 x 14 (4)
Screw + 3 x 8 (4)
Design and specifications are subject to change
without notice.

3
HCD-NXM2D
TABLE OF CONTENTS
1. SERVICING NOTES ................................................ 4
2. GENERAL
Location of Controls........................................................ 5
3. DISASSEMBLY
3-1. Disassembly Flow ........................................................... 7
3-2. Case ................................................................................. 8
3-3. Back Panel ....................................................................... 8
3-4. DVD Section ................................................................... 9
3-5. Main Board ...................................................................... 10
3-6. Front Panel ...................................................................... 10
3-7. Front Amp Board ............................................................. 11
3-8. Tape Mechanism Deck .................................................... 12
3-9. Panel Board ..................................................................... 12
3-10. Video Board ..................................................................... 13
3-11. DMB07 Board, DVD Mechanism Deck
(CDM81A-DVBU60)...................................................... 13
3-12. Tray.................................................................................. 14
3-13. Motor Board, M761 (LD/ST Motor),
M762 (BU U/D Motor) ................................................... 14
3-14. Base Unit (DVBU60) ...................................................... 15
3-15. RF Board ......................................................................... 15
3-16. Optical Pick-Up (DBU-3) ............................................... 16
4. TEST MODE .............................................................. 17
5. MECHANICAL ADJUSTMENTS ....................... 26
6. ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 26
Video Section .................................................................. 27
7. DIAGRAMS
7-1. Circuit Board Location .................................................... 29
7-2. Block Diagram – DVD DSP (1/2) Section – .................. 31
7-3. Block Diagram – DVD DSP (2/2) Section – .................. 32
7-4. Block Diagram – Tuner/Tape Deck Section – ................ 33
7-5. Block Diagram – Main Section – ................................... 34
7-6. Block Diagram – Amp Section – .................................... 35
7-7. Printed Wiring Board – RF Board – ............................... 36
7-8. Schematic Diagram – RF Board – .................................. 37
7-9. Printed Wiring Board – DVD Mechanism Board – ....... 38
7-10. Schematic Diagram – DVD Mechanism Board – .......... 39
7-11. Printed Wiring Board – DMB07 Board (Side A) – ........ 40
7-12. Printed Wiring Board – DMB07 Board (Side B) – ........ 41
7-13. Schematic Diagram – DMB07 Board (1/6) – ................. 42
7-14. Schematic Diagram – DMB07 Board (2/6) – ................. 43
7-15. Schematic Diagram – DMB07 Board (3/6) – ................. 44
7-16. Schematic Diagram – DMB07 Board (4/6) – ................. 45
7-17. Schematic Diagram – DMB07 Board (5/6) – ................. 46
7-18. Schematic Diagram – DMB07 Board (6/6) – ................. 47
7-19. Printed Wiring Board – Video Board – .......................... 48
7-20. Schematic Diagram – Video Board – ............................. 49
7-21. Printed Wiring Boards – Main Board – .......................... 50
7-22. Schematic Diagram – Main Board (1/3) – ..................... 51
7-23. Schematic Diagram – Main Board (2/3) – ..................... 52
7-24. Schematic Diagram – Main Board (3/3) – ..................... 53
7-25. Printed Wiring Boards – Panel Board – ......................... 54
7-26. Schematic Diagram – Panel Board – ............................... 55
7-27. Printed Wiring Board – Disc SW, Vol, HP Board – ....... 56
7-28. Schematic Diagram – Disc SW, Vol, HP Board – .......... 57
7-29. Printed Wiring Board – Front Amp Board – .................. 58
7-30. Schematic Diagram – Front Amp Board – ..................... 59
7-31. IC Block Diagram ........................................................... 61
8. EXPLODED VIEWS
8-1. Case, Rear Panel Section ................................................. 76
8-2. Front Panel Section ......................................................... 77
8-3. Chassis Section ................................................................ 78
8-4. DVD Mechanism Deck Section-1
(CDM81A-DVBU60) ..................................................... 79
8-5. DVD Mechanism Deck Section-2
(CDM81A-DVBU60) ..................................................... 80
8-6. DVD Mechanism Deck Section-3
(CDM81A-DVBU60) ..................................................... 81
8-7. Base Unit (DVBU60) ...................................................... 82
9. ELECTRICAL PARTS LIST ................................ 83

4
HCD-NXM2D
SECTION 1
SERVICING NOTES
NOTES ON HANDLINGTHE OPTICAL PICK-UP BLOCK
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.
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.
LASER DIODE AND FOCUS SEARCH OPERATION CHECK
Carry out the “S curve check” in “CD section adjustment” and check
that the S curve waveform is output several times.
•SERVICE POSITION FOR TAPE MECHANISM DECK
tape mechanism deck
Jig (J-2501-271-A
)
Jig (J-2501-270-A)
CN301
CN302
•NOTE ON CD/DVD MECHANISM DECK EXCHANGE
If CD/DVD mechanism deck is exchanged while the desk had gone into trays 2 or 3, since the address is memorized by the microprocessor,
the set will not operate normally.
In this case, please perform cold reset with reference to test mode (Page 17).
•Abbreviation
E2 : 120 V AC Area in E model
E3 : 240 V AC Area in E model
E15 : Iran model
EA : Saudi Arabia model
SP : Singapore model
MY : Malaysia model
TH : Thai model
•MODEL IDENTIFICATION
– Back Panel –
MODEL PART No.
SP, MY models 4-253-359-0[]
E2 model 4-253-359-1[]
E3, E15 model 4-253-359-2[]
EA model 4-253-359-3[]
TH model 4-253-359-4[]
PART No.

5
HCD-NXM2D
SECTION 2
GENERAL This section is extracted
from instruction manual.
LOCATING THE CONTROLS
Main unit
ALBUM +/– qa
CD SYNC wg
Deck A w;
Deck B qg
DIMMER wh
DISC 1 – 5 3
Disc tray 9
DISPLAY wj
Display window 4
DSGX qs
DVD ea
DVD MENU qa
DVD TOP MENU qa
ECHO LEVEL qj
MIC1/MIC2 jacks qh
MIC LEVEL qk
PHONES jack ql
Remote sensor 2
SOUND MODE control wd
SOUND SELECT control ws
TAPE A/B wl
TUNER/BAND e;
TUNING +/– 0
VIDEO/SAT wk
VOLUME control qd
?/1 (power) 1
nN (play) 5
X(pause) 6
x(stop) 7
DVD Z(open/close) 8
.m/M> (rewind/fast
forward, go back/go forward) 0
TAPE ZB (eject) qf
A TA PE Z(eject) wa
zSTAR T (record) wf
List of button locations and reference pages
ALPHA BETICAL ORDER
A – D E – Z
BUTTON DESCRIP TIONS
12 3 4
5
6
7
8
9
0
qa
qs
qd
qf
e;
ea
wl
wk
wj
wh
wg
wf
wd
ws
wa
w; qg
qhqjqk
ql

6
HCD-NXM2D
This section is extracted
from instruction manual.
Remote control
ALBUM + 7
ALBUM – qa
ANGLE qk
AUDIO qk
BAND wg
CLEAR wl
CLOCK/TIMER SELECT e;
CLOCK/TIMER SET e;
DISC SKIP wf
DISPLAY wa
DVD DISPLAY wh
DVD MENU 7
DVD SETUP ws
DVD TOP MENU qa
ENTER wj
FM MODE 5
FUNCTION +/– 0
KARAOKE/MPX qf
Number buttons qd
PLAY MODE 4
REPEAT 5
SLEEP qh
SOUND FIELD +/– wd
SUBTITLE qk
TUNER MEMORY 3
TUNING MODE 4
TUNING +/– wk
TV CH +/– qg
TV/VIDEO ea
TV VOL +/– 2
VOLUME +/– 8
?/1 (power) 1
nN (play) 6
X(pause) 6
x(stop) 6
KEY CONTROL #/29
>10 qs
TV ?/1 qj
ORETURN ql
m(rewind) w;
M(fast forward) w;
SLOW /yw;
M/m/</,wj
.(go back) wk
>(go forward) wk
ALPHABETICA L ORDER
A – E F – Z
BUTTON DESCRIPTIONS
O
bB
V
v
+
+
–
–+–
+–
+
–
+
–
+
–
+
–
XbB
y
y
+– y
y
x
mM.>
O
bB
V
v
+
–
+
–
+
–
+
–
+
–
XbB x
mM.>
ws
1
wk
qa
wd
2qg
qh
qf
qs
qd
3
4
5
6
7
8
90
qj
qk
w;
wa
ql
e;
ea
wl
wf
wg
wh
wj

7
HCD-NXM2D
SECTION 3
DISASSEMBLY
• This set can be disassembled in the order shown below.
3-2.CASE
(Page 8)
3-3.BACK PANEL
(Page 8)
3-7.FRONT AMP BOARD
(Page 11)
3-11. DMB07 BOARD,
DVD MECHANISM DECK
(CDM81A-DVBU60)
(Page 13)
3-10.VIDEO BOARD
(Page 13)
3-6.FRONT PANEL
(Page 10)
3-9.PANEL BOARD
(Page 12)
3-12. TRAY
(Page 14)
3-14. BASE UNIT (DVBU60)
(Page 15)
3-16. OPTICAL PIC-UP
(DBU-3)
(Page 16)
3-15. RF BOARD
(Page 15)
3-8.TAPE MECHANISM
DECK
(Page 12)
3-4.DVD SECTION
(Page 9)
3-13. MOTOR BOARD,
M761 (LD/ST MOTOR),
M762 (BU U/D MOTOR)
(Page 14)
SET
3-5.MAIN BOARD
(Page 10)
3-1. DISASSEMBLY FLOW

8
HCD-NXM2D
Note: Follow the disassembly procedure in the numerical order given.
3-2. CASE
3-3. BACK PANEL
1 three screws
(CASE 3 TP2)
2 three screws
(CASE 3 TP2)
3 two screws
(sumitite (B3)
)
4 two screws
(sumitite (B3))
5 screw
(sumitite (B3))
6
7
CASE
1 screw
(+BVTP 3
X 8)
2 two screws
(+BVTP 3 X 8)
3 four screws
(+BVTP 3 X 8)
4 two screws
(+BVTP 3 X 8)
5 two screws
(+BVTP 3 X 8)
6 back panel section
7 CNP204
8 connector
(CN506)

9
HCD-NXM2D
3-4. DVD SECTION
1 CNP200
2 CNP202
3 CNP372
6 DVD section
7 connector
(CN102)
4 screw
(+BVTP 3
X8 )
5 screw
(sumitite (B3))

10
HCD-NXM2D
3-5. MAIN BOARD
1 two screws
(sumitite (B3))
2 connector
(CN102)
3 connector
(CN103)
4 MAIN board
5 CNP303
6 connector
(CN108)
7 connector
(CN301)
8 connector
(CN302)
9 connector
(CN101)
0 CNP112
qa CNP110
qs CNP109
3-6. FRONT PANEL
1 two screws
(+BVTP 3
X10 )
2 front panel section
3 connector
(CN505)