CMT-CPX1, HCD-CPX1 (serv.man2) — Sony Audio Service Manual (repair manual)

Model
CMT-CPX1 HCD-CPX1 (serv.man2)
Pages
65
Size
4.21 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
cmt-cpx1-hcd-cpx1-sm2.pdf
Date

View Sony CMT-CPX1 / HCD-CPX1 (serv.man2) Service Manual online

SERVICE MANUAL
CD
Section
Tape deck
Section
COMPACT DISC DECK RECEIVER
US Model
Canadian Model
E Model
Australian Model
SPECIFICATIONS
HCD-CPX1
Ver 1.0  2003.04
HCD-CPX1 is the Amplifier, CD
player, Tape Deck and Tuner section
in CMT-CPX1.
Model Name Using Similar Mechanism
NEW
CD Mechanism Type
CDM55A-K6BD44S
Base Unit Name
BU-K6BD44S
Optical Block Name
KSM-213DCP
Optical Pick-up Name
KSS-213D
Model Name Using Similar Mechanism
NEW
9-877-173-01
Sony Corporation
2003D0500-1
Home Audio Company
C
 2003.04
Published by Sony Engineering Corporation
CD player section
Laser
Semiconductor laser 
(CD: 
λ=780 nm)
Emission duration: 
continuous
Frequency response
CD: 2 Hz – 20 kHz
Wavelength
780 – 790 nm
Tape deck section
Recording system
4-track 2-channel stereo
Frequency response
50 – 13,000 Hz (
±3 dB), 
using Sony TYPE I 
cassettes
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
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 
AM tuner section
Tuning range
Pan-American model:
530 – 1,710 kHz 
(with the tuning interval 
set at 10 kHz) 
General
Power requirements
North American model:
120 V AC, 60 Hz
Australian model:
230 – 240 V AC, 50/60 Hz
Korean model:
220 V AC, 60 Hz
Other models:
220 – 240 V AC, 50/60 Hz
Power consumption:
50 W 
Dimensions (w/h/d):
Approx. 174 
× 240.5 × 291 
mm
Mass:
Approx. 4.3 kg
Design and specifications are subject to change 
without notice.
Amplifier section
For the U.S. model
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC 
DISTORTION:
With 4-ohm loads, both channels driven, from 
100 – 10,000 Hz: rated 70 watts per channel 
minimum RMS power, with no more than 10% 
total harmonic distortion from 250 milliwatts to 
rated output.
North American model:
Continuous RMS power output (reference):
70 + 70 W
(4 ohms at 1 kHz, 10% 
THD)
Total harmonic distortion less than 0.9% (4 ohms at 
1 kHz, 35 W)
Other models:
The following measured at 220 – 240 V AC, 50/60 Hz
DIN power output (rated): 55 + 55 W 
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):
70 + 70 W 
(4 ohms at 1 kHz, 10% 
THD)
Inputs
MD (VIDEO) IN (phono jacks):
Sensitivity 450/250 mV, 
impedance 47 kilohms
Outputs
CD DIGITAL OUT:
Optical Wavelength: 
660 nm
PHONES:
accepts headphones with 
an impedance of 8 ohms or 
more
SPEAKER:
accepts impedance of 
4 ohms
2
HCD-CPX1
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.
This appliance is 
classified as a CLASS 1 
LASER product. This 
label is located on the 
rear exterior.
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.
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
passive 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
UNLEADED SOLDER
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)
: LEAD FREE MARK
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 oc-
cur 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.
3
HCD-CPX1
TABLE  OF  CONTENTS
1.
SERVICING  NOTES
...............................................
4
2.
GENERAL
Location of Controls .......................................................
8
Setting the Clock .............................................................
9
3.
DISASSEMBLY
3-1. Disassembly Flow ........................................................... 10
3-2. Case ................................................................................. 11
3-3. Front Panel Section ......................................................... 11
3-4. TC Board, Mechanical Deck .......................................... 12
3-5. MAIN Board ................................................................... 12
3-6. Tuner Unit ....................................................................... 13
3-7. CD Mechanism Deck (CDM55A-K6BD44S) ................ 13
3-8. Loading Board ................................................................. 14
3-9. Cam (CDM55) ................................................................ 14
3-10. Base Unit (BU-K6BD44S) ............................................. 15
3-11. Motor Gear Assy (Sled) (M102), BD Board .................. 15
3-12. Optical Pick-up (KSS-213D) .......................................... 16
4.
TEST  MODE
.............................................................. 17
5.
ELECTRICAL  ADJUSTMENTS
Deck Section ................................................................... 19
CD Section ...................................................................... 20
6.
DIAGRAMS
6-1. Block Diagram  – CD Servo Section – ........................... 21
6-2. Block Diagram  – TUNER/TAPE DECK Section – ...... 22
6-3. Block Diagram  – MAIN Section – ................................ 23
6-4. Block Diagram
– DISPLAY/POWER SUPPLY Section – ...................... 24
6-5. Note for Printed Wiring Boards and
Schematic Diagrams ....................................................... 25
6-6. Printed Wiring Board  – BD Board – ............................. 26
6-7. Schematic Diagram  – BD Board – ................................ 27
6-8. Printed Wiring Board  – TC Board – .............................. 28
6-9. Schematic Diagram  – TC Board – ................................. 29
6-10. Printed Wiring Boards
 – LOADING/MAIN Boards – ....................................... 31
6-11. Schematic Diagram  – MAIN Board (1/2) – .................. 32
6-12. Schematic Diagram
– LOADING/MAIN (2/2) Boards – ............................... 33
6-13. Printed Wiring Board  – AMP Board – .......................... 34
6-14. Schematic Diagram  – AMP Board – ............................. 35
6-15. Printed Wiring Boards
– BACK LIGHT/LCD/SWITCH Boards – .................... 36
6-16. Schematic Diagram
 – BACK LIGHT/LCD/SWITCH Boards – ................... 37
6-17. Printed Wiring Boards
 – HP/SP OUT/POWER Boards – .................................. 38
6-18. Schematic Diagram
  – HP/SP OUT/POWER Boards – ................................. 39
6-19. IC Pin Function Description ........................................... 44
7.
EXPLODED  VIEWS
7-1. Case Section .................................................................... 47
7-2. Front Panel Section-1 ...................................................... 48
7-3. Front Panel Section-2 ...................................................... 49
7-4. Lid (TC) Section ............................................................. 50
7-5. Chassis Section-1 ............................................................ 51
7-6. Chassis Section-2 ............................................................ 52
7-7. Chassis Section-3 ............................................................ 53
7-8. CD Mechanism Deck Section
(CDM55A-K6BD44S) .................................................... 54
7-9. Base Unit (BU-K6BD44S) ............................................. 55
8.
ELECTRICAL  PARTS  LIST
............................... 56
4
HCD-CPX1
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
NOTE  ON INSTALLING  AND REMOVING  THE  TAPE  MECHANICAL  DECK
To prevent four screws of +BVTP 3 
× 8 TYPE 2 TT (B), that fix the mechanical deck to the front panel, from being magnetized, must not
use a magnetic screwdriver.
screw +BVTP 3 
×
 8 TYPE 2 TT (B)
screw +BVTP 3 
×
 8 TYPE 2 TT (B)
non-magnetic screwdriver
MODEL  IDENTIFICATION
– Back Panel –
Part No.
Model Name
Part No.
US and Canadian models
4-244-015-1
[]
Singapore model
4-244-015-2
[]
Australian model
4-244-015-3
[]
Korean model
4-244-015-4
[]
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Here you can view online or download Sony CMT-CPX1 / HCD-CPX1 (serv.man2) Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony CMT-CPX1 / HCD-CPX1 (serv.man2) Audio. Information contained in Sony CMT-CPX1 / HCD-CPX1 (serv.man2) 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).