CMT-SX2D, HCD-SX2D - Sony Audio Service Manual (repair manual)

E Model

2006H16-1
© 2006.08

HCD-SX2D is the Amplifier, DVD player, Tape
Deck and Tuner section in CMT-SX2D.

This system incorporates Dolby

1)

  Digital and DTS

2)

  Digital

Surround System.

1)

  Manufactured under license from Dolby Laboratories.

     “Dolby”, “Pro Logic”, and the double-D symbol are trademarks
     of Dolby Laboratories.

2)

  Manufactured under license from Digital Theater Systems,

     Inc. “DTS” and “DTS 2.0 + Digital Out” are trademarks of
     Digital Theater Systems, Inc.

Inputs
TV IN (phono jacks):

voltage 1 V, 
impedance 47 kilohms

MIC (phone jack):

sensitivity 1 mV, 
impedance 10 kilohms

Outputs
VIDEO OUT (phono jack):max. output level 

1 Vp-p, unbalanced, Sync 
negative, load impedance 
75 ohms

COMPONENT VIDEO OUT:

Y: 1 Vp-p, 75 ohms
P

B

, P

R

: 0.7 Vp-p, 75 ohms

DIGITAL OUT (OPTICAL) (Square optical connector
jack, rear panel)
Wavelength

660 nm

PHONES (stereo mini jack):

accepts headphones of 
8 ohms  or  more

SPEAKER:

accepts impedance of 
6 ohms

System

Compact disc and digital 
audio and video system

Laser

Semiconductor laser 
(DVD: 

λ=650 nm, 

CD: 

λ=790 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  NTSC, PAL

Recording system

4-track 2-channel stereo

Frequency response

40 – 13,000 Hz,
using Sony TYPE I 
cassette

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

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

Antenna terminals

External antenna terminal

Intermediate frequency

450 kHz

The following measured at AC 220 V, 60 Hz
DIN power output (rated): 35 + 35 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

45 + 45 watts
(6 ohms at 1 kHz, 10% 
THD)

The following measured at AC 120 V, 240 V, 50/60 Hz
DIN power output (rated): 40 + 40 watts

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

50 + 50 watts
(6 ohms at 1 kHz, 10% 
THD)

Power requirements

Thai model:

220 V AC, 50/60 Hz

Korean model:

220 V AC, 60 Hz

E3, SP models:

110 – 120 V, 220 – 240 V 
AC, 50/60 Hz
Adjustable with voltage 
selector

DVD

Model Name Using Similar Mechanism

NEW

Section

DVD Mechanism Type

WXD

Optical Pick-up Name

DM3451-A (SF-HD65F)

TAPE

Model Name Using Similar Mechanism

NEW

Section

Tape Transport Mechanism Type

CMAL5Z220C

— Continued on next page —

•  Abbreviation
    E3 : 240 V AC Area in E model
    SP : Singapore model

2

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40 °C higher

than ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 

°C.

Caution: The printed pattern (copper foil) may peel away if

the heated tip is applied for too long, so be careful!

• Strong viscosity

Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.

• Usable with ordinary solder

It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be

damaged by heat.

• Keep the temperature of the 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.

0

0

Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.

This appliance is classified as
a CLASS 1 LASER product.
The CLASS 1 LASER
PRODUCT MARKING is
located on the rear exterior.

Dimensions (w/h/d) (excl. speakers)

Approx. 190 

× 250 × 

310 mm

Approx. 190 

× 250 × 

301 mm

Mass (excl. speakers)

Approx. 5.9 kg

Design and specifications are subject to change 
without notice.

Power consumption
Korean and Thai models:

Korean model:

Other models:

110 watts

E3, SP models:

120 watts

3

................................................

4

...................................................................

7

3-1.

Disassembly Flow ........................................................... 10

3-2.

Top Cover, DC Fan .......................................................... 11

3-3.

AMP Board, AV Board, Tuner (FM/AM) ....................... 11

3-4.

MPEG Board ................................................................... 12

3-5.

MPEG Holder .................................................................. 12

3-6.

Panel (DVD) .................................................................... 13

3-7.

DVD Loader (DVD Mechanism) .................................... 13

3-8.

Front Panel Section ......................................................... 14

3-9.

Cassette Mechanism Deck (CMAL5Z220C) .................. 14

3-10. KEY Board ...................................................................... 15
3-11. HP Board, MIC Board ..................................................... 15
3-12. MAIN Board .................................................................... 16
3-13. POWER Board ................................................................ 16
3-14. Panel Cass (Cassette) ....................................................... 17

............................................................... 18

......................... 19

.......................... 19

7-1.

Block Diagram  — MPEG-1 Section — ......................... 22

7-2.

Block Diagram  — MPEG-2 Section — ......................... 23

7-3.

Block Diagram  — AUDIO Section — ........................... 24

7-4.

Block Diagram  — PANEL/POWER Section — ............ 25

7-5.

Printed Wiring Board — MAIN Section — ................... 26

7-6.

Schematic Diagram — MAIN Section (1/3) — ............. 27

7-7.

Schematic Diagram — MAIN Section (2/3) — ............. 28

7-8.

Schematic Diagram — MAIN Section (3/3) — ............. 29

7-9.

Printed Wiring Board — MPEG Section (Side A) — .... 30

7-10. Printed Wiring Board — MPEG Section (Side B) — .... 31
7-11. Schematic Diagram — MPEG Section (1/3) — ............ 32
7-12. Schematic Diagram — MPEG Section (2/3) — ............ 33
7-13. Schematic Diagram — MPEG Section (3/3) — ............ 34
7-14. Printed Wiring Boards — KEY Section — .................... 35
7-15. Schematic Diagram — KEY Section — ........................ 36
7-16. Printed Wiring Board — AV Section — ......................... 37
7-17. Schematic Diagram — AV Section — ........................... 37
7-18. Printed Wiring Board — AMP Section — ..................... 38
7-19. Schematic Diagram — AMP Section — ........................ 39
7-20. Printed Wiring Board

— POWER Section (Except KR) — ............................... 40

7-21. Schematic Diagram

— POWER Section (Except KR) — ............................... 41

8-1.

Overall Section ................................................................ 51

8-2.

Front Panel Section ......................................................... 52

8-3.

Chassis Section ................................................................ 53

8-4.

DVD Mechanism Deck Section ...................................... 54

.................................. 55

• Abbreviation

KR

: Korean model

4

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.

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.

Parts No.

• Abbreviation

E3 : 240 V AC Area in E model
KR : Korean model
SP : Singapore model
TH : Thai model

The disc tray lock function for the antitheft of an demonstration
disc in the store is equipped.
Procedure :

1. Press the  ?/1  button to turn the set ON.
2. Press the  DVD u button to select “DVD”
3. Set disc on the tray, press the  x  button and the  Z  button

simultaneously for five seconds.

4. The message “LOCKED” is displayed the tray is locked.
5. To release from this mode, press the  x  button and the  Z

button simultaneously for five seconds again.

6. The message “UNLOCKED” is displayed and the tray is

unlocked.

When “LOCKED” is displayed, the slot lock is not released by
turning power on/off with the  ?/1  button.

E3 model

2-672-980-0

[]

SP model

2-672-981-0

[]

TH model

2-672-983-0

[]

KR model

2-672-984-0

[]