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2

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.

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
PUBLISHED BY SONY.

LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

Outputs
MD (VIDEO) OUT:

voltage 250 mV

(phono jacks)

 impedance 1 kilohms

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

PHONES:

accepts headphones of

(stereo mini jack)

8 ohms or more

FRONT SPEAKER :

accepts impedance of 8 to
16 ohms

REAR SPEAKER:

 accepts impedance of 8 to
16 ohms

CENTER SPEAKER:

accepts impedance of 8 to
 16 ohms

SUB WOOFER:

Voltage 1 V,
impedance 1 kilohms

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: 2Hz – 20 kHz =
(

±1 dB)

Signal-to-noise ratio

More than 90 dB

Dynamic range

More than 90 dB

Video color system format

NTSC, PAL

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

660 nm

Recording system

4-track 2-channel stereo

Frequency response

40 – 13,000 Hz (

±3 dB),

(DOLBY NR OFF)

using Sony TYPE I
cassette,
40 – 14,000 Hz (

±3 dB),

using Sony TYPE II
cassette

FM stereo, FM/AM superheterodyne tuner

Tuning range

87.5 – 108.0 MHz

Antenna

FM lead antenna

Antenna terminals

75 ohm unbalanced

Intermediate frequency

10.7 MHz

Tuning range
Pan American model:

530 – 1,710 kHz
(with the interval set at
10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)

European and Middle Eastern 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

Power requirements
North American model:

120 V AC, 60 Hz

European model:

230 V AC, 50/60 Hz

Australian model:

230 – 240 V AC,
50/60 Hz

Mexican model:

120 V AC, 60 Hz

Thailand model:

220 V AC, 50/60 Hz

Indian, Pakistani, Moroccan and Tunisian models:

220 V AC, 50/60 Hz

Other models:

120 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector

Power consumption
U.S.A. model:

205 watts

Canadian model:

205 watts

European model:

190 watts
0.5 watts (at the Power Saving Mode)

Other models:

225 watts

Dimensions (w/h/d)

Approx. 280 x 360 x 365mm

Mass
North American and European models:

Approx. 11.0 kg

Other models:

12.0 kg

Supplied accessories:

AM loop antenna (1)
FM lead antenna (1)
Remote commander (1)
Batteries (2)
Video cable (1)
Front speaker pads (8)
Center and rear speaker pads
 (MHC-DP1000D only, 12)

Design and specifications are subject to change without notice.

3

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

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

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

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.

— BACK PANEL —

• Abbreviation

CND : Canadian model
MX

: Mexican model

SP

: Singapore model

MY

: Malaysia model

AUS

: Australian model

EA

: Saudi Arabia model

PARTS No.

US model

CND model

AEP, UK model

SP, MY model

E model

MX model

EA model

AUS model

TH model

E91 model

4-236-826-0s

4-236-826-1s

4-236-826-2s

4-236-826-3s

4-236-826-4s

4-236-826-5s

4-236-826-6s

4-236-826-7s

4-236-826-8s

4-236-826-9s

TH

: Thai model

E91

: 220V AC area model

    After correcting the original service problem, perform the
following safety checks 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.

    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 microampers).
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 passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)

µF

Ω

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.

4

·········································································· 6

··································································· 7

···································································· 14

····························· 17

······························· 18

6-1. Circuit Board Location ················································· 22
6-2. Block Diagrams ···························································· 23
6-3. Printed Wiring Board     RF-240 Section ······················ 26
6-4. Schematic Diagram     RF-240 Section ························ 27
6-5. Printed Wiring Board     MB Section ···························· 28
6-6. Schematic Diagram     MB Section (1/5) ······················ 30
6-7. Schematic Diagram     MB Section (2/5) ······················ 31
6-8. Schematic Diagram     MB Section (3/5) ······················ 32
6-9. Schematic Diagram     MB Section (4/5) ······················ 33
6-10.Schematic Diagram     MB Section (5/5) ····················· 34
6-11. Schematic Diagram     Driver Section ························ 35
6-12. Printed Wiring Board     Driver Section ······················ 35
6-13.Printed Wiring Board     Main Section ························· 36
6-14.Schematic Diagram     Main Section (1/3) ··················· 37
6-15.Schematic Diagram     Main Section (2/3) ··················· 38
6-16.Schematic Diagram     Main Section (3/3) ··················· 39
6-17.Printed Wiring Board     DSP Section ·························· 40
6-18. Schematic Diagram     DSP Section (1/2) ··················· 41
6-19. Schematic Diagram     DSP Section (2/2) ··················· 42
6-20. Printed Wiring Board     OPT/VIDEO Section ··········· 43
6-21. Schematic Diagram     OPT/VIDEO Section ·············· 43
6-22. Printed Wiring Board     Front Amp Section ··············· 44
6-23. Schematic Diagram     Front Amp Section ················· 45
6-24. Schematic Diagram     Surround Amp Section ··········· 46
6-25. Printed Wiring Board     Surround Amp Section ········ 47
6-26. Printed Wiring Board     Panel Section ······················· 48
6-27. Schematic Diagram     Panel Section (1/2) ················· 49
6-28. Schematic Diagram     Panel Section (2/2) ················· 50
6-29. Printed Wiring Board     Leaf SW Section ·················· 51
6-30. Schematic Diagram     Leaf SW Section ····················· 51
6-31. Printed Wiring Board     Trans Section ······················· 52
6-32. Schematic Diagram     Trans Section ·························· 53
6-33. IC Pin Function Description ······································· 54
6-34. IC Block Diagrams ····················································· 61

7-1. Main Section ································································· 65
7-2. Front Panel Section ······················································· 66
7-3. Chassis Section ····························································· 67
7-4. Tape Mechanism Deck Section-1 (TCM-230MWR41) 68
7-5. Tape Mechanism Deck Section-2 (TCM-230AWR41) 69
7-6. DVD Mechanism Deck Section (CDM58D-DVBU9) · 70

······································· 71

When the self-diagnosis function is activated to prevent the system from
malfunctioning, a five-character service number (e.g., C 13 00) with a
combination of a letter and digits appears on the screen. In this case,
check the following table.

First three
characters of
the service
number
C 13

C 31

E XX
(XX is a number)

C:13:00

The disc is dirty
,Clean the disc with a soft
      cloth (page 54).

The disc is not inserted correctly.
,Re-insert the disc correctly.
To prevent a malfunction, the
system has performed the self-diagnosis
function.
,Contact your nearest Sony
      dealer or local authorized
      Sony service facility and give
      the 5-character service
      number.
      Example: E 61 10

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

Releasing Procedure :
1.

Press three buttons of  PLAY MODE  ,   x  and  m
 simultaneously.

2.

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  POWER  button.

If a MB board is exchanged, “DRIVE AUTO ADJUSTMENT’’ may
be unable to be performed. In this case, initialize a memory in the
following procedure.
1.

Starting Test Mode (See Supplement-1 page2).

2.

Press the 2  button of remote commander to set the Drive
Manual Operation (See Supplement-1 page 8).

3.

Press the 6 button of remote commander to set the Memory
Check (See Supplement-1 page 10).

4.

Press the  [CLEAR]  button of remote commander to initialize a
memory.

5

Jig (J-2501-155-A)
to RF240 board : CN004

Jig (J-2501-199-A)
to RF240 board : CN002

MB board

CHANGE OF OPTICAL PICK-UP
Optical Pick-up has been replaced from KHM-240AAA (TYPE A) to KHM-270AAA (TYPE B) from the middle of production.
In parallel with that, certain parts of MB board have been changed.

SILVER: KHM-240AAA (TYPE A)
BLACK: KHM-270AAA (TYPE B)

optical device

REF

TYPE A

TYPE  B

KHM-240AAA

KHM-270AAA

R076

1-216-837-11 METAL CHIP

22K

5%

1/10W

No Mount

R077

1-216-815-11 METAL CHIP

330

5%

1/10W

1-216-833-11 METAL CHIP

10K

5%

1/10W

R079

1-216-801-11 METAL CHIP

22

5%

1/10W

1-216-845-11 METAL CHIP

100K

5%

1/10W