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CMT-CPX22/
MHC-NXM3
US Model
CMT-CPX22
AEP Model
CMT-CPX22/MHC-NXM3
UK Model
E Model
CMT-CPX22
SERVICE MANUAL
HCD-CPX22
MICRO Hi-Fi COMPONENT SYSTEM
MHC-NXM3
MiNi Hi-Fi COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-877-827-01
2004D02-1
© 2004.04
SPECIFICATIONS
Ver 1.0 2004. 04
· CMT-CPX22 and MHC-NXM3 are composed of following models.
As for the service manual, it is issued for each component model, then, please refer to it.
COMPONENT MODEL NAME
PARTS LIST
Ref. No.
Part No.
Description
Remarks
ACCESSORIES
************
1-478-518-21 COMMANDER, STANDARD (RM-SC3)
1-501-374-12 ANTENNA, LOOP (AM)
1-793-184-23 CONNECTOR (F TYPE ADAPTOR) (FM)
1-824-005-21 CORD (WITH CONNECTOR) (for SPEAKER)
2-022-183-11 MANUAL, INSTRUCTION (ENGLISH, RUSSIAN)
(MHC-NXM3)
4-210-254-02 CUSHION (FOOT) (for SPEAKER)
4-253-813-11 MANUAL, INSTRUCTION (ENGLISH)
4-253-813-21 MANUAL, INSTRUCTION (FRENCH) (E3, EA)
4-253-813-31 MANUAL, INSTRUCTION
(FRENCH, SPANISH) (AEP, E51)
4-253-813-41 MANUAL, INSTRUCTION
(GERMAN, ITALIAN, DUTCH) (AEP)
4-253-813-51 MANUAL, INSTRUCTION
(PORTUGUESE, SWEDISH) (AEP)
4-253-813-61 MANUAL, INSTRUCTION (ARABIC) (E3, EA)
4-254-992-11 MANUAL, INSTRUCTION
(DANISH, FINNISH) (AEP)
4-254-992-21 MANUAL, INSTRUCTION (PORTUGUESE) (AEP)
4-254-992-31 MANUAL, INSTRUCTION (GERMAN) (AEP)
4-254-992-41 MANUAL, INSTRUCTION
(CZECH, HUNGARIAN) (AEP)
4-254-992-51 MANUAL, INSTRUCTION (TARKISH) (AEP)
4-254-992-61 MANUAL, INSTRUCTION (SLOVAKIAN) (AEP)
CMT-CPX22
MHC-NXM3
COMPACT DISC DECK RECEIVER SYSTEM
HCD-CPX22
HCD-NXM3
SPEAKER SYSTEM
SS-CPX22
SS-NXM3
General
Power requirements
U.S.A. model:
120 V AC, 60 Hz
European and Russian models:
230 V AC, 50/60 Hz
Saudi Arabian model:
120 ­ 127 V or 220 ­ 240 V AC, 50/60 Hz
Adjustable with voltage selector
Other models:
120 V, 220 ­ 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
U.S.A. model:
65 watts
European models:
65 watts
0.3 watts (in Power Saving mode)
Other models:
65 watts
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Approx. 230 x 292 x 355 mm
Mass
Amplifier/Tuner/Tape/CD section:
Approx. 6.1 kg
Supplied accessories
Remote Commander (1)
Size AA (R6) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Speaker pads (8)
Speaker cords (2)
Design and specifications are subject to change without notice.
· Abbreviation
E3 : 240 V AC Area in E model
E51 : Chilean and Peruvian model
EA : Saudi Arabia model


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CMT-CPX22/MHC-NXM3
REVISION HISTORY
Clicking the version allows you to jump to the revised page.
Also, clicking the version at the upper right on the revised page allows you to jump to the next revised
page.
Ver.
Date
Description of Revision
1.0
2004.04
New


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HCD-CPX22/NXM3
US Model
HCD-CPX22
AEP Model
HCD-CPX22/NXM3
UK Model
E Model
HCD-CPX22
SERVICE MANUAL
HCD-CPX22
MICRO Hi-Fi COMPONENT SYSTEM
HCD-NXM3
MiNi Hi-Fi COMPONENT SYSTEM
Sony Corporation
Audio Business Group
Published by Sony Techno Create Corporation
9-877-828-03
2007K02-1
© 2007.11
SPECIFICATIONS
Ver. 1.2 2007.11
­ Continued on next page ­
· HCD-CPX22 is the Amplifier, CD player,
tape deck and tuner section in CMT-CPX22.
· HCD-NXM3 is the Amplifier, CD player,
tape deck and tuner section in MHC-NXM3.
Model Name Using Similar Mechanism
NEW
CD
CD Mechanism Type
CDM81B-F1BD81A
Section
Base Unit Name
BU-F1BD81A
Optical Pick-up Name
KSM-215DCP/C2NP
TAPE
Model Name Using Similar Mechanism
NEW
Section
Amplifier section
For the U.S.A. model
AUDIO POWER SPECIFICATIONS
HCD-CPX22
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
With 4-ohm loads, both channels driven, from 120 ­ 10,000 Hz;
rated 100 watts per channel minimum RMS power, with no more
than 10% total harmonic distortion from 250 milliwatts to rated
output.
Other models:
The following measured at AC 120 ­ 127/220 ­ 240 V, 50/60 Hz
(Saudi Arabian model only)
The following measured at AC 230 V, 50/60 Hz (European and
Russian models only)
The following measured at AC 120/220 ­ 240 V, 50/60 Hz (except
for European, Russian and Saudi Arabian models)
DIN power output (rated):
75 + 75 watts (4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
100 + 100 watts
(4 ohms at 1 kHz, 10% THD)
Inputs
VIDEO/MD IN (phono jacks): Sensitivity 250/450 mV, impedance
47 kilohms
Outputs
DIGITAL (OPTICAL) OUT: Optical Wavelength: 660 nm
PHONES (mini jack):
accepts headphones with an
impedance of 8 ohms or more
Photo : HCD-CPX22
SPEAKER:
Use only the supplied speakers
SS-CPX22
(HCD-CPX22)
SS-NXM3
(HCD-NXM3)
CD player section
System
Compact disc and digital audio system
Laser
Semiconductor laser
(
=770 ­ 810 nm)
Emission duration: continuous
Frequency response
2 Hz ­ 20 kHz (
±0.5 dB)
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 ­ 13,000 Hz (
±3 dB), using Sony
TYPE I cassettes


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2
HCD-CPX22/NXM3
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
U.S.A. model:
87.5 ­ 108.0 MHz (100-kHz step)
Russian model:
65.0 ­ 74.0 MHz (10-kHz step)
(There is no stereo effect)
87.5 ­ 108.0 MHz (50-kHz step)
Other models:
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
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, Russian and Saudi Arabian models:
531 ­ 1,602 kHz
(with the tuning interval set at 9 kHz)
Other models:
531 ­ 1,602 kHz
(with the tuning interval set at 9 kHz)
530 ­ 1,710 kHz
(with the tuning interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
U.S.A. model:
120 V AC, 60 Hz
European and Russian models:
230 V AC, 50/60 Hz
Saudi Arabian model:
120 ­ 127 V or 220 ­ 240 V AC,
50/60 Hz
Adjustable with voltage selector
Other models:
120 V, 220 ­ 240 V AC, 50/60 Hz
Adjustable with voltage selector
Power consumption
U.S.A. model:
65 watts
European and Russian models: 65 watts
0.3 watts (in Power Saving mode)
Other models:
65 watts
Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:
Approx. 230 x 292 x 355 mm
Mass
Amplifier/Tuner/Tape/CD section:
Approx. 6.1 kg
Supplied accessories
Remote Commander (1)
Size AA (R6) batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Speaker pads (8)
Speaker cords
Design and specifications are subject to change without notice.
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.
LEAKAGE
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 passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
SAFETY CHECK-OUT
To Exposed Metal
Parts on Set
0.15
µF
1.5 k
AC
Voltmeter
(0.75 V)
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.


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3
HCD-CPX22/NXM3
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.
Main Board, Front Panel Section ....................................
8
3-4.
Tape Mechanism Deck ....................................................
9
3-5.
Panel Board .....................................................................
9
3-6.
Back Panel ....................................................................... 10
3-7.
CD Mechanism Deck (CDM81B-F1BD81A) ................. 10
3-8.
S-Master Board ................................................................ 11
3-9.
Tray .................................................................................. 11
3-10. M761 (LD/ST Motor), M762 (BU U/D Motor) .............. 12
3-11. Base Unit (BU-F1BD81A) .............................................. 12
3-12. BD Board ......................................................................... 13
4.
TEST MODE .............................................................. 14
5.
MECHANICAL ADJUSTMENTS ....................... 17
6.
ELECTRICAL ADJUSTMENTS
Deck section .................................................................... 17
CD Section ...................................................................... 18
7.
DIAGRAMS
7-1.
Circuit Board Location .................................................... 21
7-2.
Block Diagram ­ CD Servo Section ­ ............................ 22
7-3.
Block Diagram ­ Tuner/Tape Deck Section ­ ................ 23
7-4.
Block Diagram ­ Main Section ­ ................................... 24
7-5.
Block Diagram ­ S-Master Section ­ ............................. 25
7-6.
Printed Wiring Board ­ BD Board ­ .............................. 26
7-7.
Schematic Diagram ­ BD Board ­ ................................. 27
7-8.
Printed Wiring Board ­ CD Mechanism Board ­ ........... 28
7-9.
Schematic Diagram ­ CD Mechanism Board ­ ............. 29
7-10. Printed Wiring Boards ­ Main Board ­ .......................... 30
7-11. Schematic Diagram ­ Main Board (1/3) ­ ..................... 31
7-12. Schematic Diagram ­ Main Board (2/3) ­ ..................... 32
7-13. Schematic Diagram ­ Main Board (3/3) ­ ..................... 33
7-14. Printed Wiring Boards ­ Panel Board ­ ......................... 34
7-15. Schematic Diagram ­ Panel Board ­ ............................... 35
7-16. Printed Wiring Board ­ Disc SW, Vol, HP Board ­ ....... 36
7-17. Schematic Diagram ­ Disc SW, Vol, HP Board ­ .......... 37
7-18. Printed Wiring Board ­ S-Master Board ­ ..................... 38
7-19. Schematic Diagram ­ S-Master Board ­ ........................ 39
7-20. IC Block Diagram ........................................................... 40
7-21. IC Pin Function Description ............................................ 41
8.
EXPLODED VIEWS
8-1.
Main Section .................................................................... 47
8-2.
Front Panel Section ......................................................... 48
8-3.
Chassis Section ................................................................ 49
8-4.
CD Mechanism Deck Section-1
(CDM81B-F1BD81A) .................................................... 50
8-5. CD Mechanism Deck Section-2
(CDM81B-F1BD81A) .................................................... 51
8-6. CD Mechanism Deck Section-3
(CDM81B-F1BD81A) .................................................... 52
9.
ELECTRICAL PARTS LIST ................................ 53
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 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.