HCD-EC55, HCD-EC77, HCD-GX99, MHC-EC55, MHC-EC77, MHC-GX99 — Sony Audio Service Manual (repair manual)

Model
HCD-EC55 HCD-EC77 HCD-GX99 MHC-EC55 MHC-EC77 MHC-GX99
Pages
77
Size
3.61 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-ec55-hcd-ec77-hcd-gx99-mhc-ec55-mhc-ec77-mhc-g.pdf
Date

View Sony HCD-EC55 / HCD-EC77 / HCD-GX99 / MHC-EC55 / MHC-EC77 / MHC-GX99 Service Manual online

SERVICE MANUAL
Sony Corporation
Audio&Video Business Group
Published by Sony Techno Create Corporation
US Model
Canadian Model
HCD-EC55/EC77/GX99
AEP Model
HCD-EC55/EC77
UK Model
HCD-EC55
E Model
Australian Model
HCD-EC55/EC77
COMPACT DISC DECK RECEIVER
9-887-532-05
2009B00-1
© 2009.02
Ver. 1.4  2009.02
SPECIFICATIONS
HCD-EC55/EC77/GX99
• HCD-EC55 (US and Canadian models) and HCD-EC77/
GX99 (US and Canadian models) are the Amplifier, CD
player and Tuner section in MHC-EC55/EC77/GX99.
• HCD-EC55 (Except US and Canadian models) and
HCD-EC77/GX99 (Except US and Canadian models)
are the Amplifier, CD player, Tape Deck and Tuner
section in MHC-EC55/EC77/GX99.
Model Name Using Similar Mechanism
NEW
CD
Base Unit Name
BU-K6BD90-WOD
Section
Optical Pick-up Name
KSM-213DCP
TAPE
Model Name Using Similar Mechanism
NEW
Section
Tape Transport Mechanism Type
CS-21SC-901TP
Photo : HCD-EC55 (E model)
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-GX99, HCD-EC77 The United States model only)
Low channel
With 8 ohm loads, both channels driven, from 120 – 10,000 Hz; 60 watts 
per channel minimum RMS power, with no more than 0.7% total harmonic 
distortion from 250 milliwatts to rated output.
High channel
With 8 ohm loads, both channels driven, from 2,000 – 13,000 Hz; 60 watts 
per channel minimum RMS power, with no more than 0.7% total harmonic 
distortion from 250 milliwatts to rated output.
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION:
(HCD-EC55 The United States model only)
With 6 ohm loads, both channels driven, from 120 – 10,000 Hz; 45 watts 
per channel minimum RMS power, with no more than 0.7% total harmonic 
distortion from 250 milliwatts to rated output.
Amplifier section
HCD-GX99
Front speaker:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 
Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 
Ω, 8 kHz, 10% THD)
Subwoofer:
RMS output power (reference):
150 W (at 6 
Ω, 80 Hz, 10% THD)
HCD-EC77
North American model:
RMS output power (reference):
Low channel
95 W + 95 W (per channel at 8 
Ω, 1 kHz, 10% THD)
High channel
95 W + 95 W (per channel at 8 
Ω, 8 kHz, 10% THD)
European and Russian models:
Power output (rated):
Low channel
45 W + 45 W (at 8 
Ω, 1 kHz, 1% THD)
High channel
45 W + 45 W (at 8 
Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
65 W + 65 W (per channel at 8 
Ω, 1 kHz, 10% THD)
High channel
65 W + 65 W (per channel at 8 
Ω, 8 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated):
Low channel
50 W + 50 W (at 8 
Ω, 1 kHz, 1% THD)
High channel
50 W + 50 W (at 8 
Ω, 8 kHz, 1% THD)
RMS output power (reference):
Low channel
70 W + 70 W (per channel at 8 
Ω, 1 kHz, 10% THD)
High channel
70 W + 70 W (per channel at 8 
Ω, 8 kHz, 10% THD)
HCD-EC55
North American model:
RMS output power (reference):
65 W+ 65 W (per channel at 6 
Ω, 1 kHz, 10% THD)
European and Russian models:
Power output (rated): 45 W + 45 W (at 6 
Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 
Ω, 1 kHz, 10% THD)
Other models:
The following are measured at AC 120, 127, 220, 240 V, 50/60 Hz
Power output (rated): 45 W + 45 W (at 6 
Ω, 1 kHz, 1% THD)
RMS output power (reference):
65 W + 65 W (per channel at 6 
Ω, 1 kHz, 10% THD)
Inputs
AUDIO IN (stereo mini jack): Sensitivity 800 mV, 
impedance 47 kilohms
Outputs
PHONES (stereo mini jack): Accepts headphones with 
an impedance of 8 
Ω or more
SPEAKER: Accepts impedance of 6 to 8 
SUBWOOFER OUT (HCD-GX99 only)
CD player section
System: Compact disc and digital audio system
Laser: Semiconductor laser (
λ=770 – 810 nm)
Emission duration: continuous
Frequency response: 20 Hz – 20 kHz
Signal-to-noise ratio: More than 90 dB
Dynamic range: More than 88 dB
Tape deck section (Except for North American model)
Recording system: 4-track 2-channel, stereo
Tuner section
FM stereo, FM/AM superheterodyne tuner
Antenna:
FM lead antenna
AM loop antenna
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)
Intermediate frequency: 10.7 MHz
— Continued on next page —
2
HCD-EC55/EC77/GX99
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.
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.
MODEL IDENTIFICATION
– Back Panel –
Abbreviation
AR
: Argentine model
AUS : Australian model
CND : Canadian model
E2
: 120 V AC area in E model
E3
: 240 V AC area in E model
E51 : Chilean and Peruvian models
KR
: Korean model
MX : Mexican model
RU
: Russian model
SP
: Singapore model
Parts No.
Ver. 1.2
General
Power requirements:
Argentine model: AC 220 V, 50/60 Hz
Korean model: AC 220 V, 60 Hz
Australian model: AC 230 –  240 V, 50/60 Hz
North American model: AC 120 V, 60 Hz
European and Russian models: AC 230 V, 50/60 Hz
Mexican model: AC 127 V, 60 Hz
Other models: AC 120, 220 or 230 – 240 V, 50/60 Hz, adjustable with voltage 
selector
Power consumption:
HCD-GX99
USA model: 190 W
Canadian model: 245 VA
HCD-EC77
USA model: 190 W
Canadian model: 245 VA
European and Russian models: 140 W
0.5 W (in Power Saving Mode)
Other models: 150 W
HCD-EC55
USA model: 95 W
Canadian model: 130 VA
European and Russian models: 95 W
0.5 W (in Power Saving Mode)
Other models: 95 W
Mass (excl. speakers):
HCD-GX99
North American model: Approx. 6.1 kg
HCD-EC77
North American and European models: Approx. 6.1 kg
Other models: Approx. 6.4 kg
HCD-EC55
North American model: Approx. 5.0 kg
Other models: Approx. 5.3 kg
Design and specifications are subject to change without notice.
Dimensions (w/h/d) (excl. speakers):
Approx. 200 
×
 306 
×
 410 mm
AM tuner section:
Tuning range
530 – 1,710 kHz (with 10 kHz tuning interval)
531 – 1,710 kHz (with 9 kHz tuning interval)
European and  Russian models:
531 – 1,602 kHz (with 9 kHz tuning interval)
Other models:
530 – 1,610 kHz (with 10 kHz tuning interval)
531 – 1,602 kHz (with 9 kHz tuning interval)
Intermediate frequency: 450 kHz
Pan-American and Australian models:
Model
Part No.
GX99: CND model
2-319-061-0
[]
EC55: CND model
2-893-578-0
[]
EC55: AEP, UK model
2-893-579-0
[]
EC55: RU model
2-893-580-0
[]
EC55: E2 model
2-893-581-0
[]
EC55: E51 model
2-893-582-0
[]
EC55: MX model
2-893-583-0
[]
EC55: AR model
2-893-584-0
[]
EC55: SP model
2-893-586-0
[]
EC55: AUS model
2-893-587-0
[]
EC55: KR model
2-893-588-0
[]
EC77: CND model
2-893-595-0
[]
EC77: RU model
2-893-597-0
[]
EC77: E2 model
2-893-598-0
[]
EC77: E51 model
2-893-599-0
[]
EC77: MX model
2-893-600-0
[]
EC77: AR model
2-893-601-0
[]
EC77: AUS model
2-893-604-0
[]
EC55: US model
3-095-136-0
[]
EC77: AEP model
3-095-137-0
[]
EC77: E3 model
3-095-138-0
[]
GX99: US model
3-095-139-0
[]
EC77: US model
3-095-495-0
[]
3
HCD-EC55/EC77/GX99
TABLE OF CONTENTS
1.
SERVICING NOTES
................................................
4
2.
GENERAL
...................................................................
6
3.
DISASSEMBLY
3-1.
Disassembly Flow ...........................................................
8
3-2.
Side Panel (R), Side Panel (L) .........................................
9
3-3.
Top Panel Assy (Except US, CND) ................................. 10
3-4.
Top Panel (US, CND) ...................................................... 10
3-5.
Front Panel Assy .............................................................. 11
3-6.
Mechanical Deck (Except US, CND) .............................. 12
3-7.
Belt (MAIN), Belt (R/F) (Except US, CND) .................. 12
3-8.
KEY-LEFT Board ............................................................ 13
3-9.
KEY-RIGHT Board, KEY-CD Board, PANEL Board .... 13
3-10. JACK Board ..................................................................... 14
3-11. MAIN Board .................................................................... 15
3-12. CD Mechanical ................................................................ 16
3-13. Optical Pick-up (KSM-213DCP), BD90 Board .............. 17
3-14. Belt (DLM3A) ................................................................. 18
3-15. Chassis ............................................................................. 18
3-16. PT Board (Except EC55:US, CND),
PT (U) Board (EC55:US, CND), Power Transformer ..... 19
3-17. LOW-AMP Board, HI-AMP Board (EC77/GX99) ......... 19
3-18. HI-AMP Board (EC55) ................................................... 20
3-19. DC Fan ............................................................................ 20
4.
TEST MODE
............................................................... 21
5.
MECHANICAL ADJUSTMENTS
......................... 25
6.
ELECTRICAL ADJUSTMENTS
.......................... 25
7.
DIAGRAMS
7-1.
Block Diagram — BD/DRIVER Section — .................. 30
7-2.
Block Diagram — TUNER Section — .......................... 31
7-3.
Block Diagram — MAIN Section — ............................. 32
7-4.
Printed Wiring Board — BD90 Board — ...................... 33
7-5.
Schematic Diagram — BD90 Board — ......................... 34
7-6.
Printed Wiring Boards — MAIN Section — ................. 35
7-7.
Schematic Diagram — MAIN Section (1/2) — ............. 36
7-8.
Schematic Diagram — MAIN Section (2/2) — ............. 37
7-9.
Printed Wiring Board — PANEL Board — ................... 38
7-10. Schematic Diagram — PANEL Board — ...................... 39
7-11. Printed Wiring Boards — KEY Section — .................... 40
7-12. Schematic Diagram — KEY Section — ........................ 40
7-13. Printed Wiring Board — HI-AMP Board — .................. 41
7-14. Schematic Diagram — HI-AMP Board — .................... 42
7-15. Printed Wiring Board
— LOW-AMP Board (EC77/GX99) — .......................... 43
7-16. Schematic Diagram
— LOW-AMP Board (EC77/GX99) — .......................... 44
7-17. Printed Wiring Boards
— DECK Section (Except US,CND) — ......................... 45
7-18. Schematic Diagram
— DECK Section (Except US,CND) — ......................... 45
7-19. Printed Wiring Board
— PT Board (Except EC55: US,CND) — ...................... 46
7-20. Schematic Diagram
— PT Board (Except EC55: US,CND) — ...................... 46
7-21. Printed Wiring Board
— PT (U) Board (EC55: US,CND) — ............................ 47
7-22. Schematic Diagram
— PT (U) Board (EC55: US,CND) — ............................ 47
8.
EXPLODED VIEWS
8-1.
Overall Section ................................................................ 57
8-2.
Front Panel Section ......................................................... 58
8-3.
Chassis Section (EC77/GX99) ........................................ 59
8-4.
Chassis Section (EC55) ................................................... 60
8-5.
Top Section (Except US, CND) ....................................... 61
8-6.
CD Mechanism Deck Section ......................................... 62
9.
ELECTRICAL PARTS LIST
.................................. 63
Ver. 1.2
4
HCD-EC55/EC77/GX99
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 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.
SAFETY  CHECK-OUT
After correcting the original service problem, perform the following
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
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.
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
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.
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 waveforms is output three times.
SECTION 1
SERVICING NOTES
This appliance is classified as a CLASS 1 LASER product.
The CLASS 1 LASER PRODUCT MARKING is located on
the rear exterior. (Except for Korean model)
Laser component in this product is capable of emitting radiation
exceeding the limit for Class 1.
When carrying this system
Remove all discs to protect the CD mechanism.
Hold down CD 
u
 (play/pause) on the unit, and press 
?/1
 until “STANDBY” appears.
After “LOCK” appears, unplug the power cord.
NOTES  ON  HANDLING  THE  OPTICAL  PICK-UP
BLOCK  OR  BASE  UNIT
CAUTION
Page of 77
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Here you can view online or download Sony HCD-EC55 / HCD-EC77 / HCD-GX99 / MHC-EC55 / MHC-EC77 / MHC-GX99 Service Manual in pdf. This Service Manual can help you recover, restore, fix, disassemble and repair Sony HCD-EC55 / HCD-EC77 / HCD-GX99 / MHC-EC55 / MHC-EC77 / MHC-GX99 Audio. Information contained in Sony HCD-EC55 / HCD-EC77 / HCD-GX99 / MHC-EC55 / MHC-EC77 / MHC-GX99 service manual (repair manual) typically includes:

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  • Schematics, wiring and block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Parts list (bill of materials).