Sony HCD-EC55 - Receiver System User manual

SERVICE MANUAL
Sony Corporation
Personal Audio Division
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
9-887-532-03
2007G16-1
© 2007.07
Ver. 1.2 2007.07
SPECIFICATIONS
HCD-EC55/EC77/GX99
•HCD-EC55(USandCanadianmodels)andHCD-EC77/
GX99 (US and Canadian models) are theAmplifier, 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 MechanismType CS-21SC-901TP
Photo : HCD-EC55 (E model)
Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUTAND 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 OUTPUTAND 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 Ωor more
SPEAKER: Accepts impedance of 6 to 8 Ω
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 Americanmodel)
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 0OR DOTTED LINE
WITH MARK 0ON 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 0SUR
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 VAC area in E model
E3 : 240 VAC 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
Powerrequirements:
Argentine model:AC 220V, 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:
Checktheantennaterminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts forAC 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. Acommercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’instructions to use these
instruments.
2. Abattery-operatedAC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOMorbattery-operatedAC 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 VAC range are suitable. (See
Fig. A)
Fig. A. Using an AC voltmeter to check AC leakage.
1.5 k Ω 0.15 µ FAC
voltmete
r
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
CAUTION
Use of controls or adjustments or performance of procedures
otherthanthosespecified 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
Carryout 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
1 Remove all discs to protect the CD mechanism.
2 Hold down CD u(play/pause) on the unit, and press
?/1 until “STANDBY” appears.
3 After “LOCK”appears, unplug the power cord.
NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
CAUTION

5
HCD-EC55/EC77/GX99
B
gear
tray
flathead screwdriver
bottom rib
A
Turn the bottom rib (not the gear) with a flathead screwdriver in the direction of arrow A, and
draw out the tray in the direction of arrow B.
HOWTO OPENTHE DISCTRAY WHEN POWER SWITCHTURNS OFF

6
HCD-EC55/EC77/GX99 SECTION 2
GENERAL This section is extracted
from instruction manual.
Basic Operations Adjusting the sound
To adjust the volume
Press VOLUME +/– on the remote (or turn the
VOLUME control on the unit) ȶ.
To add a sound eect
To Press
Generate a more dynamic
sound (Dynamic Sound
Generator X-tra)
DSGX Ȱon the unit.
Set the sound eect EQ Ȱ.
To turn on the subwoofer
Press SUBWOOFER ON/OFF in the lower part of the
subwoofer until the indicator on the subwoofer lights up.
*Toadjust the sound output level for the subwoofer, turn the
SUBWOOFER LEVEL in the lower part of the subwoofer. Once you
have made the adjustment, the overall sound level can be adjusted
using VOLUME +/– on the remote (or turn the VOLUME control
on the unit)
ȶ
.
Playing a CD/MP3 disc
1Select the CD function.
Press CD on the remote (or FUNCTION repeatedly)
Ȭ.
2Place a disc.
Press ì(open/close)
ȱon the unit, and place a
disc with the label side up on the disc tray. To place
additional discs, slide the disc tray with your nger as
shown below.
To cl ose the disc tray, press ì(open/close) ȱon the
unit.
Do not force the disc tray closed with your nger, as
this may damage the unit.
3Select a disc.
If the discs are currently stopped, press DISC SKIP on
the remote (or DISC SKIP/EX-CHANGE on the unit)
ȳ. To change discs while in other functions, press
DISC 1 – 3 Ȳon the unit.
4Start playback.
Press à(play) (or CD ā(play/pause) on the unit)
Ȭ.
To exchange other discs during playback, press DISC
SKIP/EX-CHANGE ȳon the unit.
To Press
Pause playback ê(pause) on the remote (or CD
āon the unit) Ȭ. To resume
play, press the button again.
Stop playback Ą(stop) ȭ.
Select a folder on an
MP3 disc +/– ȯ.
Select a track or le ÃÄÑ (go back/go forward)
on the remote (øÄÞ on the
unit) ȭ.
Find a point in a
track or le
Hold down ù/ß(rewind/fast
forward) ȭduring playback, and
release the button at the desired
point.
Select Repeat Play REPEAT Ȯon the remote
repeatedly until “REP” or “REP1”
appears.
To change the play mode
Press PLAY MODE Ȯrepeatedly while the player is
stopped. You can select normal play (no display for all
discs or “1 DISC” for a disc or “ ” for all MP3 les
in the folder on the disc), shue play (“SHUF” for
all discs shue, “1 DISC SHUF” for one disc shue
or “ SHUF*” for folder shue), or program play
(“PGM”).
*When playing a CD-DA disc, (SHUF) Play performs the same
operation as 1 DISC (SHUF) Play.
Notes on Repeat Play
ˎAll tracks or les on a disc are played repeatedly up to ve times.
ˎYou cannot select “REP” and “SHUF” (all discs shue) at the same
time.
ˎ“REP1” indicates that a single track or le is repeated until you stop
it.
Notes on playing MP3 discs
ˎDo not save other types of tracks or les or unnecessary folders on a
disc that has MP3 les.
ˎFolders that have no MP3 les are skipped.
ˎMP3 les are played back in the order that they are recorded onto
the disc.
ˎe system can only play MP3 les that have a le extension of
“.MP3”.
ˎIf there are les on the disc that have the “.MP3” le extension,
but that are not MP3 les, the unit may produce noise or may
malfunction.
ˎe maximum number of:
ˋloadable sessions on a single disc is 10.
ˋfolders is 150 (including the root folder).
ˋMP3 les is 255.
ˋMP3 les and folders that can be contained on a single disc is 300.
ˋfolder levels (the tree structure of les) is eight.
ˎCompatibility with all MP3 encoding/writing soware, recording
device, and recording media cannot be guaranteed. Incompatible
MP3 discs may produce noise or interrupted audio or may not play
at all.
Notes on playing multisession discs
ˎIf the disc begins with a CD-DA (or MP3) session, it is recognized
as a CD-DA (or MP3) disc, and playback continues until another
session is encountered.
ˎA disc with a mixed CD format is recognized as a CD-DA (audio)
disc.
Listening to the radio
1Select “FM” or “AM.”
Press TUNER/BAND
Ȭrepeatedly.
2Select the tuning mode.
Press TUNING MODE
Ȯrepeatedly until “AUTO”
appears.
3Tune in the desired station.
Press +/– on the remote (or TUNING + or – on the
unit)
ȭ.
Scanning stops automatically when a station is tuned
in, and then “TUNED” and “STEREO” (for stereo
programs) appear.
To stop automatic scanning
Press Ą(stop) ȭ.
To tune in a station with a weak signal
If “TUNED” does not appear and the scanning does
not stop, press TUNING MODE Ȯrepeatedly until
“MANUAL” appears and press +/– on the remote (or
TUNING + or – on the unit) ȭrepeatedly to tune in the
desired station.
To reduce static noise on a weak FM stereo
station
Press FM MODE Ȯon the remote repeatedly until
“MONO” appears to turn o stereo reception.
Playing a tape (Except for North
American model)
1Select a tape function.
Press TAPE on the remote (or FUNCTION on the
unit repeatedly)
Ȭ.
2Insert a tape.
Press Ąì (stop/eject)
ȫon the unit, and insert the
tape into the cassette holder. Make sure there is no
slack in the tape to avoid damaging the tape or the
tape deck.
3Start playback.
Press à(play)
ȫon the unit.
To Press
Pause playback ê(pause) ȫon the unit. To resume
play, press the button again.
Stop playback Ąì (stop/eject) ȫon the unit.
Rewind or fast
forward*
ù/ßȫon the unit.
*Besureto press Ąì (stop/eject)
ȫ
on the unit aer the tape has
been wound or rewound to the end.
Note
Do not turn o the system during playback or recording.
Changing the display
To Press
Change
information on the
display*
DISPLAY repeatedly when the
system is turned on.
Change Display
mode (See below.)
DISPLAY repeatedly when the
system is turned o.
*For example, you can view CD/MP3 disc information, such as the
track or le number or folder name during normal play, or the total
playing time while the player is stopped.
e system oers the following display modes.
Display mode When the system is o
1)
,
Power Saving
Mode
2)
e display is turned o to conserve
power. e timer and clock continue
to operate.
Clock
3)
e clock is displayed.
1)
e STANDBY indicator

on the unit lights up when the system is
o.
2)
Yo u c a nnot set the clock in Power Saving Mode.
3)
e clock display automatically turns to Power Saving Mode aer
eight seconds.
Notes on the display information
ˎCharacters that cannot be displayed appear as “_”.
ˎe following are not displayed;
ˋtotal playing time for an MP3 disc.
ˋremaining playing time for an MP3 le.
ˎe following are not displayed correctly;
ˋelapsed playing time of an MP3 le encoded using a VBR (variable
bit rate).
ˋfolder and le names that do not follow either the ISO9660 Level
1, Level 2 or Joliet in the expansion format.
ˎe following are displayed;
ˋtotal playing time for a CD-DA disc when the play mode is “1
DISC”.
ˋremaining playing time for a track.
ˋID3 tag information for MP3 les when ID3 version 1 and version
2 tags are used (ID3 version 2 tag information display has priority
when both ID3 version 1 and version 2 tags are used for a single
MP3 le).
ˋup to 15 characters of ID3 tag information using uppercase letters
(A to Z), numbers (0 to 9), and symbols (‘< > * + , – / @ [ \ ] _).
*Except for North American model
Before using the system
To use the remote
Slide and remove the battery compartment lid Ȼ, and
insert the two R6 (size AA) batteries (supplied), ×side
rst, matching the polarities shown below.
Notes on using the remote
ˎWith normal use, the batteries should last for about six months.
ˎDo not mix an old battery with a new one or mix dierent types of
batteries.
ˎIf you do not use the remote for a long period of time, remove the
batteries to avoid damage from battery leakage and corrosion.
ˎBatteries installed devices shall not be exposed to excessive heat such
as sunshine, re or the like.
To set the clock
1Turn on the system.
Press ÒÄÆ (on/standby) ȩ.
2Select the clock set mode.
Press CLOCK/TIMER SET ȹon the remote. If the
current mode appears on the display, press Ã/Ñ
ȭon the remote repeatedly to select “CLOCK,” and
then press ENTER Ⱥon the remote.
3Set the time.
Press Ã/Ñȭon the remote repeatedly to set
the hour, and then press ENTER Ⱥon the remote.
Use the same procedure to set the minutes.
e clock settings are lost when you disconnect the
power cord or if a power failure occurs.
Selecting a music source
Press the following buttons (or press FUNCTION Ȭ
repeatedly).
To select Press
CD CD Ȭon the remote.
Tun er TUNER/BAND Ȭ.
Tape
1)
TAPE Ȭon the remote.
Component
2)
(connected
using an audio cord)
FUNCTION repeatedly
(or AUDIO IN
3)
on
the remote) Ȭuntil
“A U D I O IN” appears.
1)
Except for North American model.
2)
If the component has the AVLS (Automatic Volume Limiter System)
or BASS BOOST function, turn o the function to avoid distorted
sound from the speakers.
3)
North American model only.
*
(HCD-GX99 only)

7
HCD-EC55/EC77/GX99
Using optional audio components
To connect an optional headphones
Connect headphones to the PHONES jack
ȴ
on the
unit.
To connect an optional component
Connect additional audio source components to the
AUDIO IN jack
ȵ
on the unit using an analog audio
cord (not supplied). Turn down the volume on the
system, and then select the AUDIO IN function.
Creating your own CD program
(Program Play)
Use buttons on the remote to create your own program.
1Press CD
Ȭ
to select the CD function.
2 Press PLAY MODE
Ȯ
repeatedly until“PGM” appears
while the player is stopped.
3 Press DISC SKIP
ȳ
to select a disc.
4 Press Ã/Ñ(or ø/Þon the unit)
ȭ
repeatedly until the desired track number appears.
When programing MP3 les, press +/–
ȯ
repeatedly to select the desired folder, and then select
the desired le.
Selected track or le number
Total playing time of the
selected track
5 Press ENTER
Ⱥ
to add the track or le to the
program.
6 Repeat steps 3 through 5 to program additional
tracks or les, up to a total of 25 tracks or les.
7 To play your program of tracks or les, press à(or
CD āon the unit)
Ȭ
.
e program remains available until you open the disc
tray. To play the same program again, select the CD
function, and press à(or CD āon the unit)
Ȭ
.
To cancel Program Play
Press PLAY MODE
Ȯ
repeatedly until “PGM”
disappears while the player is stopped.
To delete the last track or le of the program
Press CLEAR
ȼ
on the remote while the player is
stopped.
To view program information, such as total
track number of the program
Press DISPLAY
ȷ
repeatedly.
Presetting radio stations
You can preset your favorite radio stations and tune
them in instantly by selecting the corresponding preset
number.
1 Tune in the desired station (See “Listening to the
radio”
) .
2 Press TUNER MEMORY
Ȯ
on the remote.
Preset number
3 Press +/– (or TUNING + or – on the unit)
ȭ
repeatedly to select your desired preset number.
If another station is already assigned to the selected
preset number, the station is replaced by the new
stations.
4 Press ENTER
Ⱥ
on the remote.
5 Repeat steps 1 through 4 to store other stations.
Yo u c a n preset up to 20 FM and 10 AM stations. e
preset stations are retained for about half a day even
if you disconnect the power cord or if a power failure
occurs.
6 To call up a preset radio station, press TUNING
MODE
Ȯ
repeatedly until“PRESET” appears, and
then press +/– (or TUNING + or – on the unit)
ȭ
repeatedly to select the desired preset number.
Other Operations
Recording onto a tape (Except for
North American model)
Use a TYPE I (normal) tape only.
Yo u c a n record just the portions you like from a sound
source, including connected audio components.
Use buttons on the unit to control tape recording.
1 Insert a recordable tape into the cassette holder
with the side you want to record facing up.
2 Prepare the recording source.
Select the desired source to record.
Place the disc you want to record and press DISC
SKIP/EX-CHANGE ȳto select a disc.
When recording a folder from an MP3 disc, press
PLAY MODE Ȯrepeatedly to select “ ,” a n d then
press +/– ȯrepeatedly to select the desired
folder.
To record only your favorite CD tracks or MP3 les in
your desired order, perform steps 2 to 5 of “Creating
your own CD program.”
3 Start recording.
Press Ć(record) ȫ, and then start playing the
desired recording source.
e CD starts playing automatically aer 10 seconds
have passed.
If there is noise while recording from the tuner,
reposition the appropriate antenna to reduce the
noise.
While recording, you cannot listen to other sources.
To stop recording
Press Ąì ȫ.
Tip
We recommend that you press ê
ȫ
rst, and then press Ąì
ȫ
to
avoid noise being recorded when you stop recording.
Using the timers
e system oers two timer functions. If you use both
timers, the Sleep Timer has priority.
Sleep Timer:
Yo u c a n fall asleep to music. is function works even if
the clock is not set.
Press SLEEP Ƚon the remote repeatedly. If you select
“A U T O,” the system automatically turns o aer the
current disc or tape stops or in 100 minutes.
If the tape deck is still playing or recording at the set
time, the system turns o aer the tape deck stops.
Play Timer:
Yo u c a n wake up to CD or tuner at a preset time.
Use buttons on the remote to control the Play Timer.
Make sure you have set the clock.
1 Prepare the sound source.
Prepare the sound source, and then press VOLUME
+/– ȶto adjust the volume.
To start from a specic CD track or MP3 le, create
your own CD program.
2 Press CLOCK/TIMER SET ȹ.
3 Press Ã/Ñȭrepeatedly to select “PLAY,” and
then press ENTER Ⱥ.
“ON TIME” appears, and the hour indication ashes.
4 Set the time to start playing.
Press Ã/Ñȭrepeatedly to set the hour, and
then press ENTER Ⱥ.
e minute indication ashes. Use the procedure
above to set the minutes.
5 Use the same procedure as in step 4 to set the time
to stop playing.
6 Select the sound source.
Press Ã/Ñȭrepeatedly until the desired
sound source appears, and then press ENTER Ⱥ. e
display shows the timer settings.
7 Press ÒÄÆ ȩto turn o the system.
If the system is on at the preset time, the Play Timer
will not play.
To activate or check the timer again
Press CLOCK/TIMER SELECT ȹ, press Ã/Ñ
ȭrepeatedly until “PLAY SEL” appears, and then press
ENTER Ⱥ.
To cancel the timer
Repeat the same procedure as above until “OFF” appears,
and then press ENTER Ⱥ.
To change the setting
Start over from step 1.
Tip
e Play Timer setting remains as long as the setting is not canceled
manually.

8
HCD-EC55/EC77/GX99 SECTION 3
DISASSEMBLY
3-1. DISASSEMBLY FLOW
•This set can be disassembled in the order shown below.
3-3. TOP PANEL ASSY
(EXCEPT US, CND)
(Page 10)
3-4. TOP PANEL (US, CND)
(Page 10)
3-5. FRONT PANEL ASSY
(Page 11)
3-6. MECHANICAL DECK
(EXCEPT US, CND)
(Page 12)
3-7.
BELT (MAIN), BELT (R/F)
(EXCEPT US, CND)
(Page 12)
3-8. KEY-LEFT BOARD
(Page 13)
3-9. KEY-RIGHT BOARD,
KEY-CD BOARD,
PANEL BOARD
(Page 13)
3-13. OPTICAL PICK-UP (KSM-213DCP),
BD90 BOARD
(Page 17)
3-14. BELT (DLM3A)
(Page 18)
3-19. DC FAN
(Page 20)
3-12. CD MECHANICAL
(Page 16)
3-15. CHASSIS
(Page 18)
3-16. PT BOARD (EXCEPT EC55:US,CND),
PT (U) BOARD (EC55:US,CND),
POWER TRANSFORMER
(Page 19)
3-18. HI-AMP BOARD (EC55)
(Page 20)
3-17. LOW-AMP BOARD,
HI-AMP BOARD (EC77/GX99)
(Page 19)
3-11. MAIN BOARD
(Page 15)
3-10. JACK BOARD
(Page 14)
3-2. SIDE PANEL (R) ,
SIDE PANEL (L)
(Page 9)
SET
Ver. 1.2

9
HCD-EC55/EC77/GX99
3-2. SIDE PANEL (R), SIDE PANEL (L)
3 side panel (R)
6 side panel (L)
5 two screws
(+BVTP3 × 10 )
2 two screws
(+BVTP3 × 10 )
1 four screws
(TP3 × 12 )
4 four screws
(TP3 × 12 )
Note: Follow the disassembly procedure in the numerical order given.

10
HCD-EC55/EC77/GX99
3-3. TOP PANEL ASSY (EXCEPT US, CND)
3-4. TOP PANEL (US, CND)
5 two
claws
4 two screws
(+BVTP3 × 10 )
7 Remove the top panel
in the direction of the arrow.
1 screw
(+KTP3 × 10 )
2 screw
(+KTP3 × 10 )
3 two screws
(+BVTP3 × 10 )
6 dowel
6 two
claws
4 two screws
(+BVTP3 × 10 )
8 Remove the top panel assy
in the direction of the arrow.
1 screw
(+KTP3 × 10 )
2 screw
(+KTP3 × 10 )
3 two screws
(+BVTP3 × 10 )
7 dowel
5 wire (flat type)
9core (CN606)

11
HCD-EC55/EC77/GX99
B
tray
A
1 Turn the bottom rib (not the gear) with a flathead screwdriver in the direction
of arrow A, and draw out the tray in the direction of arrow B.
2 two claws
3 door (CD)
9 front panel
assy
8 screw
(+KTP3 × 10 )
7 screw
(+KTP3 × 10 )
6 wire (flat type)
13core (CN302)
4 fwire (flat type)
27core (CN607)
5 fwire (flat type)
9core (CN605)
gear
flathead screwdriver
bottom rib
3-5. FRONT PANEL ASSY

12
HCD-EC55/EC77/GX99
1 Open the cassette box.
7 Slide the lever in the
direction of the arrow.
2 four screws
(+BVTP 2.6 × 8 )
8 mechanical deck
3 two screws
(+BVTP 3 × 6 )
6 DECK board
4 bracket (DECK)
5 connector
(CN501)
2 belt (R/F)
1 belt (MAIN)
3-6. MECHANICAL DECK (EXCEPT US, CND)
3-7. BELT (MAIN), BELT (R/F) (EXCEPT US, CND)

13
HCD-EC55/EC77/GX99
3-8. KEY-LEFT BOARD
1 four screws
(+BVTP 2.6 × 8 )
2 connector
(CN401)
3 KEY-LEFT board
3-9. KEY-RIGHT BOARD, KEY-CD BOARD, PANEL BOARD
9 claw
8 eight screws
(+BVTP 2.6 × 8
)
4 six screws
(+BVTP 2.6 × 8 )
6 KEY-CD board
3 KEY-RIGHT board
5 Remove the
soldering.
1 five screws
(+BVTP 2.6 × 8 )
0 wire (flat type)
27core (CN301)
qa PANEL board
2 connector
(CN403)
7 knob (VOL)

14
HCD-EC55/EC77/GX99
3-10. JACK BOARD
1 three screws
(+BVTP 2.6 × 8 )
4 JACK board
2 JACK HOLD board
3 wire (flat type)
9core (CN605)

15
HCD-EC55/EC77/GX99
3-11. MAIN BOARD
9 two screws
(+BVTP3 × 10 )
0 two screws
(+BVTP3 × 10 )
5 connector
(CN604)
7 two screws
(+BVTP3 × 6 )
6 two screws
(+BVTP3 × 10 )
qd MAIN board
4 connector
(CN601)
3 wire (flat type)
21core (CN608)
8 screw
(+BVTP3 × 10 )
qa Remove the soldering.
qs REG board
2 wire (flat type)
27core (CN607)
1 wire (flat type)
9core (CN605)
(EC77/GX99)

16
HCD-EC55/EC77/GX99
3-12. CD MECHANICAL
2 four screws
(+BVTP3 × 10 )
8 CD mechanical
3 Remove the CD mechanical in the direction of the arrow.
4 wire (flat type
)
21core
5 wire (flat type)
13core
1 wire (flat type)
21core (CN608)
6 two tapping screws
(+BVWH 3 × 8 )
7 cover (DLM3)
(EC77:US,CND/GX99)

17
HCD-EC55/EC77/GX99
3-13. OPTICAL PICK-UP (KSM-213DCP), BD90 BOARD
8 Remove the solderings from
the four points.
7 wire (flat type) (16 core)
(CN301)
q; BD90 board
9 optical pick-up
(KSM-213DCP)
4 two screws (+PTPWHM 2.6)
1 two screws (+PTPWHM 2.6)
2 two coil springs (insulator)
3 two insulators
5 two coil springs (insulator)
6 two insulators

18
HCD-EC55/EC77/GX99
3-14. BELT (DLM3A)
2 two screws
3 cover
4 belt (DLM3A)
5 belt (DLM3A)
1 two screws
3-15. CHASSIS
2 two screws
(+BVTP3 × 10 )
3 six screws
(+BVTP3 × 10 )
8 back panel
1 clamp
0 four screws
(+BVTP4 × 12 )
9 Remove the
solderings.
qa chassis
qd HOLD board
qs screw
(+BVTP3 × 10 )
4 two screws
(+BVTP3 × 10 )
qf POWER cord
PT board
power cord
groove
Route the harnesses as shown below.
6 two screws
(+BVTP3 × 10 )
5 heatsink support
7 heatsink support
(EC77/GX99)

19
HCD-EC55/EC77/GX99
3-16. PT BOARD (EXCEPT EC55:US, CND), PT (U) BOARD (EC55:US, CND), POWER TRANSFORMER
1 four screws
(+BV4 × 8 )
2 PT board,
power transformer
2 PT (U) board,
power transformer
(EXCEPT EC55:US,CND)
(EC55:US,CND)
3-17. LOW-AMP BOARD, HI-AMP BOARD (EC77/GX99)
6 LOW-AMP board
3 HI-AMP board
1 screw
(+BVTP3 × 10 )
4 screw
(+BVTP3 × 10 )
5 two transisitor
screws
2 two transisitor
screws
Ver. 1.2

20
HCD-EC55/EC77/GX99
3-18. HI-AMP BOARD (EC55)
3 HI-AMP board
1 screw
(+BV3 × 10 )
2 two transisitor
screws
3-19. DC FAN
2 DC fan
1 four screws
(+BVTP3 × 10
)