SONY HCD-GX355, HCD-GX555, HCD-RG475, HCD-RG575 Service Manual

HCD-GX355/GX555/

RG270/RG475/RG575

SERVICE MANUAL

Ver. 1.2 2005.05

HCD-GX355 is the amplifier, CD play er, tape dec k
and tuner section in MHC-GX355.
HCD-GX555 is the amplifier, CD play er, tape dec k
and tuner section in MHC-GX555.
HCD-RG270 is the amplifier, CD play er , tape deck
and tuner section in MHC-RG270.
HCD-RG475 is the amplifier, CD play er , tape deck
and tuner section in MHC-RG475S.
HCD-RG575 is the amplifier, CD play er , tape deck
and tuner section in MHC-RG575S.

Model Name Using Similar Mechanism NEW

CD CD Mechanism Type
Section

TAPE Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism T ype CWM43FF13

Base Unit Name BU-F1BD81C (Except Mexican model)/BU-F1BD84 (Mexican model)
Optical Pick-up Block Name KSM-215DCP

Photo: HCD-RG575

CDM74KFS-F1BD81C (Except Mexican model)/
CDM74KFS-F1BD84 (Mexican model)

US Model

Canadian Model

HCD-GX355/GX555

AEP Model

UK Model

Australian Model

HCD-RG270/RG475

E Model

HCD-RG270/RG475/RG575

Amplifier section
AUDIO POWER SPECIFICATIONS

(HCD-GX555/GX355 USA model only)

HCD-GX555
POWER OUTPUT AND TOTAL HARMONIC

DISTORTION:

With 6 ohm loads, both channels driven, from
120 – 10,000 Hz: rated 145 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion fro m 250 mill iwatts to
rated output.

HCD-GX355
POWER OUTPUT AND TOTAL HARMONIC

DISTORTION:

With 6 ohm loads, both channels driven, from
120 – 10,000 Hz: rated 150 watts per channel
minimum RMS power, with no more than 10%
total harmonic distortion fro m 250 mill iwatts to
rated output.

SPECIFICATIONS

North American model:
HCD-GX555

Front speaker
Continuous RMS power output (reference):

145 + 145 watts (6 ohms at
1 kHz, 10% THD)

Total harmonic distortion less than 0.07% (6 ohms at

1kHz, 80 W)
Sub woofer
Continuous RMS power output (reference):

170 watts (6 ohms at

80 Hz, 10% THD)
Total harmonic distortion less than 0.07% (6 ohms at

80 Hz, 90 W)

HCD-GX355

Continuous RMS power output (reference):

150 + 150 watts (6 ohms at

1 kHz, 10% THD)
Total harmonic distortion less than 0.07% (6 ohms at

1kHz, 80 W)

European and Russian models:
HCD-RG475

Front speaker
DIN power output (rated): 110 + 110 watts (6 ohms at

Continuous RMS power output (reference):

Music power output (reference):

Sub woofer
DIN power output (rated): 130 watts (6 ohms at

Continuous RMS power output (reference):

Music power output (reference):

HCD-RG270

DIN power output (rated): 80 + 80 watts (6 ohms at

Continuous RMS power output (reference):

Music power output (reference):

1kHz, DIN)

140 + 140 watts (6 ohms at
1kHz, 10% THD)

280 + 280 watts (6 ohms at
1kHz, 10% THD)

80 Hz, DIN)

160 watts (6 ohms at
80 Hz, 10% THD)

320 watts (6 ohms at
80 Hz, 10% THD)

1kHz, DIN)

100 + 100 watts (6 ohms at
1kHz, 10% THD)

200 + 200 watts (6 ohms at
1kHz,

10% THD)

– Continued on next page –

9-879-533-03

2005E05-1
© 2005.05

COMPACT DISC DECK RECEIVER

Sony Corporation

Personal Audio Group
Published by Sony Engineering Corporation

HCD-GX355/GX555/RG270/RG475/RG575

Other models :
HCD-RG575

The following measured at AC 120, 127, 220, 240 V
50/60 Hz
Front speaker
DIN power output (rated): 100 + 100 watts (6 ohms at

1kHz, DIN)

Continuous RMS power output (reference):

125 + 125 watts (6 ohms at

1kHz, 10% THD)
Sub woofer
DIN power output (rated): 120 watts (6 ohms at

80 Hz, DIN)
Continuous RMS power output (reference):

150 watts (6 ohms at

80 Hz, 10% THD)

HCD-RG475

Front speaker
The following measured at AC 120, 127, 220, 240 V
50/60 Hz
DIN power output (rated): 100 + 100 watts (6 ohms at

1kHz, DIN)
Continuous RMS power output (reference):

120 + 120 watts (6 ohms at

1kHz, 10% THD)
Sub woofer
DIN power output (rated): 120 watts (6 ohms at

80 Hz, DIN)
Continuous RMS power output (reference):

150 watts (6 ohms at

80 Hz, 10% THD)

HCD-RG270

The following measured at AC 120, 127, 220, 240 V
50/60 Hz
DIN power output (rated): 100 + 100 watts (6 ohms at

1kHz, DIN)

Continuous RMS power output (reference):

125 + 125 watts (6 ohms at

1kHz, 10% THD)

Inputs
AUDIO IN (stereo mini jack):

voltage 250 mV,

impedance 47 kilohms

MIC (phone jack) (Latin American model onl y) :

sensitivity 1 mV,

impedance 10 kilohms

Outputs
PHONES (stereo mini jack):

accepts headphones of

8ohms or more

VIDEO OUT (phono jack) (Mexican model only):

max. output level 1Vp-p,

unbalanced, Sync

negative, load impedance

75 ohms

SPEAKER: accepts impedance of 6 to

16 ohms

SUBWOOFER OUT (HCD-GX555/RG575/
RG475 only): accepts impedance of 6 to

16 ohms

CD player section

System Compact disc and digit al

Laser Diode Properties Emission duration:

*This output is the value measurement at a dist ance o f

200mm from the objective lens surf ace on the
Optical Pick-up Block with 7mm ape rture.

Frequency response 2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90

audio system

continuous
Laser Output*:
Less than 44.6µW

dB

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

Other models: 87.5 – 108.0 MHz

Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz

AM tuner section

Tuning range
Pan-American models: 530 – 1,710 kHz

European, Russian and Saudi Arabian mode ls:

Other models: 530 – 1,710 kHz

Antenna AM loop antenna
Intermediate frequency 450 kHz

(100 kHz step)

(50 kHz step)

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

531 – 1,602 kHz (with the
tuning interval set at
9kHz)

(with the tuning interval
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interval
set at 9 kHz)

General

Power requirements
North American model: 120 V AC, 60 Hz
European and Russian models:

Australian model: 230 – 240 V AC, 50/60 Hz
Argentine model: 220 V AC, 50/60 Hz
Mexican model: 127 V AC, 60 Hz
Saudi Arabian model: 120 – 127, 220 or

Other models: 120 V, 220 V or

Power consumption
USA model:
HCD-GX555: 285 watts
HCD-GX355: 210 watts
Canadian model:
HCD-GX555: 380 VA
HCD-GX355: 290 VA
European and Russian models:
HCD-RG475: 300 watts

HCD-RG270: 190 watts

Other models:
HCD-RG575: 300 watts
HCD-RG475: 300 watts

HCD-RG270: 210 watts

Dimensions (w/h/d) (excl. speakers)

Mass (excl. speakers)
North American models:
HCD-GX555: Approx. 10.5 kg
HCD-GX355: Approx. 10.0 kg
Canadian model:
HCD-GX555: Approx. 10.5 kg
HCD-GX355: Approx. 10.0 kg
European and Russian models:
HCD-RG475: Approx. 10.5 kg
HCD-RG270: Approx. 8.7 kg
Other models:
HCD-RG575: Approx. 10.5 kg
HCD-RG475: Approx. 10.5 kg
HCD-RG270: Approx. 10.0 kg

Design and specifications are subject to change
without notice.

230 V AC, 50/60 Hz

230 – 240 V AC, 50/60 Hz
Adjustable with voltag e
selector

230 – 240 V AC, 50/60 Hz
Adjustable with voltag e
selector

0.25 watts (at the Power
Saving Mode)

0.25 watts (at the Power
Saving Mode)

Approx. 280 × 325
430 mm

2

HCD-GX355/GX555/RG270/RG475/RG575

r

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 manuf acturers’ instructions to use these
instruments.

2. A battery-operated A C 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 A C range are suitable. (See
Fig. A)

To Exposed Metal
Parts on Set

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.

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 marking is located on the
rear exterior.

AC

0.15 µF

1.5 k

Ω

Earth Ground

voltmete
(0.75 V)

Fig. A. Using an AC voltmeter to check AC leakage.

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 MANU AL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

ATTENTION AU COMPOSANT AYANT RAPPORT

LES COMPOSANTS IDENTIFIÉS P AR UNE MARQ UE 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.

À LA SÉCURITÉ!

UNLEADED SOLDER

Boards requiring use of unleaded solder are printed with the lead­free 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.

3

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

TABLE OF CONTENTS

1. SERVICING NOTES ............................................... 5

2. GENERAL ................................................................... 6

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 8

3-2. Case (Top) ....................................................................... 9

3-3. Door (CD)........................................................................ 9

3-4. Front Panel Section ......................................................... 10

3-5 Mechanical Deck (CWM43FF13) ................................... 10

3-6. CD Mechanism Deck (CDM74KFS-F1BD81C (Except

MX model)/CDM74KFS-F1BD84 (MX model)) ........... 11

3-7. Back Panel Section .......................................................... 11

3-8. MAIN Board.................................................................... 12

3-9. BD Board/CD Board ....................................................... 12

3-10. DRIVER Board, SW Board............................................. 13

3-11. Optical Pick-up (KSM-215DCP) .................................... 13

3-12. SENSOR Board ............................................................... 14

3-13. MOTOR (TB) Board ....................................................... 14

3-14. MOTOR (LD) Board ....................................................... 15

4. TEST MODE.............................................................. 16

5. ELECTRICAL ADJUSTMENT............................ 20

6. DIAGRAMS

6-1. Block Diagram – CD SERVO Section – ........................ 21

6-2. Block Diagram – AUDIO/VIDEO Section – ................. 22

6-3. Block Diagram – AMP Section –................................... 23

6-4. Block Diagram

– PANEL, POWER SUPPLY Section – .......................... 24

6-5. Printed Wiring Board

– CD Board – (Except MX model) ................................. 26

6-6. Schematic Diagram

– CD Board – (Except MX model) ................................. 27

6-7. Printed Wiring Board – BD Board – (MX model) ......... 28

6-8. Schematic Diagram – BD Board – (MX model) ............ 29

6-9. Printed Wiring Boards – CHANGER Section –............. 30

6-10. Schemtic Diagram – CHANGER Setion –..................... 31

6-11. Printed Wiring Board – MAIN Board – ......................... 32

6-12. Schematic Diagram – MAIN Board (1/3) – ................... 33

6-13. Schematic Diagram – MAIN Board (2/3) – ................... 34

6-14. Schematic Diagram – MAIN Board (3/3) – ................... 35

6-15. Printed Wiring Board – POWER Board – ...................... 36

6-16. Schematic Diagram –POWER Board –.......................... 37

6-17. Printed Wiring Board – SUB WOOFER Board –

(GX555/RG475/RG575 only) ......................................... 38

6-18. Schematic Diagram – SUB WOOFER Board –

(GX555/RG475/RG575 only) ......................................... 39

6-19. Printed Wiring Boards

– AUDIO, MIC, HEADPHONE Boards – ...................... 40

6-20. Schematic Diagram

– AUDIO, MIC, HEADPHONE Boards – ...................... 41

6-21. Printed Wiring Boards – CD-G Section –

(MX model only)............................................................. 42

6-22. Schematic Diagram – CD-G Section –

(MX model only)............................................................. 43

6-23. Printed Wiring Board – PANEL Section (1/2) ............... 44

6-24. Printed Wiring Board – PANEL Section (2/2) ............... 45

6-25. Schematic Diagram – PANEL Section (1/2) .................. 46

6-26. Schematic Diagram – PANEL Section (2/2) .................. 47

6-27. Printed Wiring Boards – TRANS Section – ................... 48

6-28. Schematic Diagram – TRANS Section – ....................... 49

7. EXPLODED VIEWS

7-1. Overall Section ................................................................ 66

7-2. Back Panel Section .......................................................... 67

7-3. Front Panel Section ......................................................... 68

7-4. Key Section ..................................................................... 69

7-5. Chassis Section................................................................ 70

7-6. Transformer Section ........................................................ 71

7-7. CD Mechanism Deck Section-1

(CDM74KFS-F1BD81C) (Except MX model)/

(CDM74KFS-F1BD84) (MX model).............................. 72

7-8. CD Mechanism Deck Section-2

(CDM74KFS-F1BD81C) (Except MX model)/

(CDM74KFS-F1BD84) (MX model).............................. 73

8. ELECTRICAL PARTS LIST................................ 74

• Abbreviation
MX: Mexican model

4

HCD-GX355/GX555/RG270/RG475/RG575

l

SECTION 1

SERVICING NOTES

Ver. 1.1

NOTES ON HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT

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 pick­up 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.

• MODEL IDENTIFICATION
– Back Panel –

Model number labe

Label indication Model

2-348-857-01 CA GX355: CND
2-560-970-01 U GX555: US
2-560-971-01 CA GX555: CND
2-560-972-01 CED RG475: AEP, UK, EE, RU
2-560-974-01 E3 RG475: E3
2-560-975-01 AU RG475: AUS
2-560-979-01 U GX355: US
2-560-980-01 CED RG270: AEP, UK, EE, RU
2-560-982-01 E3 RG270: E3
2-560-982-11 E2 RG270: E2
2-560-983-01 EA3 EA
2-560-984-01 SP2 RG475: SP
2-560-985-01 AU RG270: AUS
2-560-986-01 E51 RG270: E51
2-560-987-01 MX4
2-560-987-11 MX4
2-560-988-01 AR RG270: AR
2-560-995-01 SP2 RG575: SP
2-580-005-01 E2
2-580-005-11 E3
2-580-007-01 E51 RG575: E51
2-580-008-01 MX4
2-580-008-11 MX4
2-580-009-01 AR RG575: AR

RG270: MX

RG575: E2

RG575: MX

• Abbreviation

AR : Argentine model
AUS: Australian model
CND : Canadian model
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
EE : East European model
MX : Mexican model
RU : Russian model
SP : Singapore model

5

HCD-GX355/GX555/RG270/RG475/RG575

123456789q

SECTION 2

GENERAL

• Location of Controls

Main unit

ALPHABETICAL ORDER

A – O P – Z

ALBUM +/– qs
AUDIO IN wl
AUDIO IN jack wf
CD es
CD SYNC wj
Deck A wg
Deck B qk
DISC 1 – 3 qa
DISC SKIP/EX-CHANGE qd

Disc tray 0
DISPLAY 3
Display window 5
ECHO LEVEL
EFFECT ON/OFF 4
ENTER 4
EQ BAND qs
GROOVE 4
ILLUMINATION 2
MIC jack
MIC LEVEL
MULTIPLEX
Operation Dial

(– EQ +/l L/
– TUNING +) qj

2)

wd

2)

ws

1)

1)

6

wa

P FILE 4
PHONES jack w;
PLAY MODE 8
Power illuminator qg
PRESET EQ 4
REC PAUSE/START wl
Remote sensor 7
SUBWOOFER ON/OFF

SURROUND 4
TA P E A/B e;
TUNER/BAND ea
TUNING MODE 8
VOLUME control ql

es
ea
e;
wl
wk
wj
wh
wg

wf

This section is extracted from
instruction manual.

NS

3)

9

BUTTON DESCRIPTIO

?/1 (power) 1

X (pause) qs
x (stop) qs
M (fast forward) qs
N (play) qs
m (rewind) qs
Z (eject) qf
PUSH Z (deck B) (eject) qh
Z PUSH (deck A) (eject) wh

1)

Mexican model only

2)

Latin American model only
(Mexican model comes with
2microphone jacks)

3)

HCD-GX555/RG575/
RG475 only

;

L

l

j

A

H

S

s

B

qa
qs
qd
qf
qg
qh
qj
qk
ql
w;

6

wd

ws

wa

Remote control

HCD-GX355/GX555/RG270/RG475/RG575

ALPHABETICAL ORDER

A – E

ALBUM + qa
ALBUM – qd
CD qk
CLEAR qg
CLOCK/TIMER SELECT 2

CLOCK/TIMER SET 3
DISC SKIP q;
DISPLAY wa
ENTER 9
EQ qf

F – Z

FM MODE 4
FUNCTION 6

PLAY MODE w;
REPEAT 4
SLEEP ws
TAPE qj
TUNER BAND 5
TUNER MEMORY ql
TUNING MODE w;
VOLUME +/– qs

ws
wa
w;
ql
qk
qj

qh

BUTTON DESCRIPT

?/1 (power) 1
m/M (rewind/fast forward)

7

N (play) 8
X (pause) 8
x (stop) 8

+/– (tuning) qh
./> (go back/go forward)

qh

IONS

1
2
3
4
5
6

7

qg
qf

qd

8

9
q;

qa
qs

7

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

SECTION 3

DISASSEMBLY

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

3-2. CASE (TOP)

(Page 9)

3-3. DOOR (CD)

(Page 9)

3-4. FRONT PANEL SECTION

(Page 10)

3-6. CD MECHANISM DECK

(CDM74KFS-F1BD81C (EXCEPT MX MODEL)/
CDM74KFS-F1BD84 (MX MODEL))
(Page 11)

3-7. BACK PANEL SECTION

(Page 11)

3-8. MAIN BOARD

(Page 12)

3-9. BD BOARD/

CD BOARD
(Page 12)

3-10. DRIVER BAORD,

3-5. MECHANICAL DECK

(CWM43FF13)
(Page 10)

3-11. OPTICAL PICK-UP

(KSM-215DCP)
(Page 13)

SW BOARD
(Page 13)

3-12. SENSOR BOARD

(Page 14)

3-13. MOTOR (TB) BOARD

(Page 14)

3-14. MOTOR (LD) BOARD

(Page 15)

8

Note: Follow the disassembly procedure in the numerical order given.

3-2. CASE (TOP)

0

5

6

case (side-R)

two screws (B3)

HCD-GX355/GX555/RG270/RG475/RG575

case (top)

7

two screws

8

4

three screws
(case 3 TP2)

3-3. DOOR (CD)

9

3

two claws

9

3

case (side-R)

8

1

three screws
(case 3 TP2)

2

two screws (B3)

4

door (CD)

–BOTTOM VIEW–
CD mechanism deck

1

Turn the pulley in the direction of the arrow.

Front panel side

2

Pull-out the disc tray.

9

HCD-GX355/GX555/RG270/RG475/RG575

3-4. FRONT PANEL SECTION

•

Abbreviation
AR : Argentina model
E2 : 120V AC Area in E model
E51 : Chilean and Peruvian models
MX : Mexican model

1

connector
(CN061)

(E2, E51, AR, MX)

5

connector
(CN066)

8

screw (B3)

9

front panel section

6

four screws (B3)

3-5. MECHANICAL DECK (CWM43FF13)

•

Abbreviation
MX : Mexican model

(MX)

7

cover (TCM)

7

screw
(B3)

2

3

connector
(CN203)

coating clip

4

connector (CN065)

3

connector (CN201)

(except MX)

2

harness

1

screw
(2.6

5

two screws
(2.6

×

8)

×

8)

4

two screws
(2.6

×

8) (except MX)

(2.6 × 10) (MX)

10

8

mecanical deck
(CWM43FF13)

6

screw
(2.6 × 8)

HCD-GX355/GX555/RG270/RG475/RG575

3-6. CD MECHANISM DECK

(CDM74KFS-F1BD81C (EXCEPT MX MODEL)/CDM74KFS-F1BD84 (MX MODEL))

7

CD mechanism deck

(MX)

6

connector
(CN1004)

2

(CDM74KFS-F1BD81C (except MX)/CDM74KFS-F1BD84 (MX))

1

three screws (B3)

5

wire (flat type)
(13 core) (CN331)

Ver. 1.1

(MX)

3

wire (flat type) (13 core) (CN701)

3-7. BACK PANEL SECTION

2

connector
(CN903)

1

connector
(CN906)

4

wire (flat type) (27 core) (CN201) (Except MX)
wire (flat type) (31 core) (CN201) (MX)

3

connector
(CN901)

•

Abbreviation
MX : Mexican model

8

back panel section

4

wire (flat type) (15 core)
(CN381)

5

connector
(CN041)

6

two screws (B3)

7

two screws (B3)

11

HCD-GX355/GX555/RG270/RG475/RG575

)

3-8. MAIN BOARD

5

MAIN board

4

connector
(CN441)

MAIN

board

1

connector
(CN907)

3-9. BD BOARD/CD BOARD

•

Abbreviation
MX : Mexican model

3

Remove soldering from the four points.

2

connector
(CN905)

3

two screws (B3)

2

screw

(+BVTP 2.6

4

BD

board (MX)/

CD

board (except MX)

1

× 8

)

wire (flat type) (16 core) (CN101

12

3-10. DRIVER BOARD, SW BOARD

1

two

screws

(+BTTP (M2.6))

4

DRIVER

board

2

wire (flat type) 5p (CN702)

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

3

connector

4p (CN703)

5

screw

(+BTTP (M2.6))

6

SW board

3-11. OPTICAL PICK-UP (KSM-215DCP)

•

Abbreviation
MX : Mexican model

8

7

(insulator)

6

(+PTPWH M2.6)

2

h

older (213) ASSY

qf

optical pick-up

(KSM-215DCP)

two

insulators

two

coil springs

two floating

screw

9

1

floating

(+PTPWH M2.6)

5

two

insulators

4

two

coil springs

(insulator)

3

two floating

(+PTPWH M2.6)

qs

wire

(flat type)

(CN101)

qd

B

D board (MX)/

C

D board (except MX)

screw

screw

qa

Remove the four solderings of motor.

0

s

crew (+BVTP 2.6x 8)

13

HCD-GX355/GX555/RG270/RG475/RG575

3-12. SENSOR BOARD

1

floating

screw

8

(+BTTP (M2.6))

screw

ear (geneva)

s

crew

2

t

ray

(+PTPWH M2.6)

6

floating

(+PTPWH M2.6)

7

g

0

SENSOR board

9

connector

(

CN731)

3

b

elt (table)

4

floating

(+PTPWH M2.6)

5

screw

p

ulley (table)

3-13. MOTOR (TB) BOARD

2

stopper

4

1

stopper

5

t

able motor assy (M741)

3

wire (flat type) 5 core (CN742)

7

MOTOR (TB) board

6

Remove the two solderings of motor.

14

5

two

screws

(+BTTP (M2.6))

3-14. MOTOR (LD) BOARD

4

Remove the two solderings of motor.

5

l

oading motor assy (M751)

HCD-GX355/GX555/RG270/RG475/RG575

2

two

screws

(+BTTP (M2.6))

3

MOTOR (LD) board

1

b

elt (loading)

15

HCD-GX355/GX555/RG270/RG475/RG575

[ --- EQ + ]

Ll

SECTION 4

TEST MODE

MC COLD RESET

The cold reset clears all data including preset data stored in the
RAM to initial conditions. Execute this mode when returning the
set to the customer.

Procedure:

1. Press three buttons of x , [ILLUMINATION] and [DISC 1]
simultane-ously.

2. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.

AM TUNING INTERVAL CHANGE-OVER
(Except AEP, UK, East European, Russian models)

A step of AM tuning interval can be changed over between 9 kHz
and 10 kHz.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [TUNER/BAND] button to select “AM”.

3. Press the I/1 button to turn the power off.

4. Press two buttons of [PLAY MODE/TUNING MODE] and I/1
simultaneously.

5. The message “AM 9K STEP” or “ AM 10K STEP” is displayed
on the fluorescent indicator tube, and thus the channel step is
changed over.

CD SHIP (LOCK) MODE

This mode moves the optical pick-up to the position durable to
vibration. Use this mode when returning the set to the customer
after repair.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press two buttons of [CD] and [POWER] simultaneously.

4. The message “LOCK” is displayed on the fluorescent indicator
tube, and the CD ship mode is set.

AMP TEST MODE

This mode is used to display the parameter of amplifier IC and
display the VACS status.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [ILLUMINATION] and [PRESET EQ]
simultaneously.

3. When the AMP test mode is activated, the message “AMP
TEST IN” is displayed on the fluorescent indicator tube
momentarily, then amplif ier adjustment mode is displayed on
the fluorescent indicator tube.

4. Press the [DISPLAY] button to changed over between VACS
status display mode and the amplifier IC parameter display
mode.

5. In this mode, press the [GROOVE] button to changed over
DBFB on/off, and “DBFB ON” or “DBFB OFF” is displayed
on the fluorescent indicator tube.

6. In this mode, press the [SURROUND] button to changed over
surround on/off, and “SURROUND ON” or “SURROUND
OFF” is displayed on the fluorescent indicator tube.

7. In this mode, press the [EQ BAND] button to enter the equalizer
adjustment mode.
In the equalizer adjustment mode, press the [EQ BAND] button
to change over the adjustment band as LO W/MID/HIGH. And
turn the
each bands.

8. To release the amplifier IC parameter display mode or equalizer
adjustment mode, press the I/1 button to the power off.

knob to adjust the equalizer level of

CD SHIP (LOCK) MODE & COLD RESET

This mode is used to perform CD chip (lock) mode and cold reset
simultaneously.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press three buttons of x , [CD] and [DISPLAY] simultaneously .

4. The message “COLD RESET” is displayed on the fluorescent
indicator tube momentarily, then becomes standby states.

CD TRAY LOCK MODE

This mode is used to unable to take sample disc out of tray in the
shop.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Load a disc and press two buttons of x and Z for 5 seconds.

4. The message “LOCKED” is displayed on the fluorescent
indicator tube and the CD tray is locked. (Even if pressing
the Z button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the CD tray is locked)

5. To release this mode, press two buttons of x and Z for 5
seconds.

6. The message “UNLOCKED” is displayed on the fluorescent
indicator tube and the CD tray is unlocked.

16

HCD-GX355/GX555/RG270/RG475/RG575

AGING MODE

This mode can be used for operation check of CD section and tape
deck section.
CD section and tape deck section work in parallel.

If an error occurred:

The aging operation stops only an error occurred sections and display
then status.

If no error occurs:

The aging operation continues repeatedly.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Load three discs and insert two tape to the deck A and B.

4. Press three buttons of x , [ILLUMINATION] and [DISC SKIP/EX-
CHANGE] simultaneously.

5. Aging operations of CD and tape are started at the same time.

6. To release this mode, press the I/1 button to turn the power
off or press the function buttons to change the function.

1. Display at the Aging Mode

Display operating state of CD section and tape deck section
alternately.
If an error occurred, stop display which that section.

2. CD Section

The sequence during the aging mode is following as below.
Display at the aging mode is the same as the normal operation.

Aging mode sequence (CD section) :

3. Tape Deck Section

The sequence during the aging mode is following as below.
If an error occurred, stop display that step.

Aging mode sequence (tape deck section) :

Rewind the tape A and B

“TAPE AAG-1 or TAPE BAG-2”

Shut off

FWD play the tape A

“TAPE AAG-3”

2 minutes

Rewind the tape A

“TAPE AAG-6”

Shut off

FWD play the tape B

“TAPE BAG-3”

2 minutes

Rewind the tape B

“TAPE BAG-6”

Shut off

Start (from disc 1)

Disc chucking

TOC read

Play first track for 2 seconds

Play last track for 2 seconds

EX-change open/close

Open the disc tray

Disc skip

Close the tray

Change the next disc.

Note: “TAPE *AG-*” is display of each step.

PANEL TEST MODE

This mode is used to check the fluorescent indicator tube, LEDs
and buttons.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [ILLUMINATION] and [GROOVE]
simultaneously.

3. Fluorescent indicator tube and LEDs are all turned on.

4. Press two buttons of [ALBUM ---] and [ENTER] simultaneously,
mode is changed over.

5. In the key check mode, press each key , the defined key number
of every each key list is displayed on the fluorescent indicator
tube.

6. In the key count check mode, “KEYCNT 0” is displayed on
the fluorescent indicator tube. Each time a key is pressed, “K”
value increases. Howe ver , once a key is pressed, it is no longer
taken into account.

7. In the headphone input check mode, connect the headphone,
the message “H_P ON” is displayed on the fluorescent
indicator tube, and disconnect the headphone, the message
“H_P OFF” is displayed on the fluorescent indicator tube.

8. In the volume check mode, “VOLUME FLAT” is displayed
on the fluorescent indicator tube. Turn the [MASTER
VOLUME] knob clockwise, the message “VOLUME UP”
is displayed on the fluorescent indicator tube momentarily
and turn the [MASTER VOLUME] knob counterclockwise,
the message “VOLUME DOWN” is displayed on the
fluorescent indicator tube momentarily.

17

HCD-GX355/GX555/RG270/RG475/RG575

MC TEST MODE

This mode is used to check operations of microprocessor.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [ILLUMINATION] and [DISC 3]
simultane-ously.

3. When the MC test mode is activated, VACS level is displayed
on the fluorescent indicator tube momentarily.

4. Turn the

[ --- EQ + ]

Ll

knob clockwise, the message
“ALL EQ MAX” is displayed on the fluorescent indicator
tube momentarily and turn the

[ --- EQ + ]

Ll

knob
counter-clockwise, the message “ALL EQ MIN” is
displayed on the fluorescent indicator tube momentarily.

5. Press the [PRESET EQ] button, the message “ ALL EQ FLAT”
is displayed on the fluorescent indicator tube momentarily.

6. Turn the [MASTER VOLUME] knob clockwise, the message
“VOLUME MAX” is displayed on the fluorescent indicator
tube momentarily and turn the [MASTER VOLUME] knob
counterclockwise, the message “VOLUME MIN” is displayed
on the fluorescent indicator tube momentarily.

7. Press the [GROOVE] button to changed over VACS on/off.

8. When the [CD SYNC] key is pressed with the test tape (AMS-
100, AMS-110A) in the deck, number of space between tunes
is counted, then if AMS-110A is set, “OK” is displayed on the
fluorescent indicator tube and if AMS-100 is set, “NG” is
displayed on the fluorescent indicator tube.

9. Press the I/1 button to release from this mode, then cold reset
is performed.

VERSION DISPLAY MODE

This mode is used to check the model, destination and software
version.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press three buttons of x , [ILLUMINATION] and [DISC 2]
simultane-ously.

3. When this mode is activated, model and destination is displayed
on the fluorescent indicator tube.

4. Press the [DISPLAY] button to changed ov er between software
version and year, month, day of the software creation display
mode and model and destination display mode.

5. To release this mode, press three buttons of x , [ILLUMI
NATION] and [DISC 2] simultaneously.

CD ERROR CODE DISPLAY MODE

This mode can be used for error code display of CD section.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] key to select “CD”.

3. Press three buttons of x , [CD] and [DISC 1] simultaneously.

4. When this mode is activated, mechanism deck error code is
displayed on the fluorescent indicator tube.

5. Press the [GROOVE] button to changed over between optical
pick-up error code display mode and mechanism deck error
code mode.

6. Turn the

[ --- EQ + ]

history.

7. To release this mode, press the I/1 button to turn the power
off.

Ll

knob to change o ver display of error

1. Mechanism Deck Error Code Mode

When this mode is entered, mechanism deck error code is displayed
with the 10-character format on the fluorescent indicator tube.

The first digit from the left indicates:

The first digit from the left indicates which mode the error history
is. In the mechanism deck error code mode, “M” is displayed on
the fluorescent indicator tube.

The second digit from the left indicates:

(Error history number display)
The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error.

The third and 4th digit from the left indicates:
(Error status display)

The third and 4th digit from the left indicates which error status is
indicated.

Display Status

00 No error
08 Table operation time-out (Table does not mov e to the target

position within the specified time)

16 In the chucking down operation, the operation was retried

by the maximum number of times but the operation could
not be completed

17 In the chucking up and down operation, the reverse

recovery processing was attempted but it could not be
recovered

18 In the chucking up operation, the operation was retried by

the maximum number of times but the operation could not
be completed

20 Loading operation time-out (Table does not move to the

target position within the specified time)

22 As the chuck was in the ex-open status at the initialization,

the closing was attempted but could not be completed

The 5th and 6th digit from the left indicates:
(Present status display)

The 5th and 6th digit from the left indicates which operating status
when an error occurred is indicated.

Display Status

01 Open completion status
02 From open status, the movement to c hucking down position

is under way

03 From chucking down position, the open operation is under

way
04 Chucking down completion status
10 The chucking down operation is under way
11 The chucking up operation is under way
12 Close completion status
13 From close status, the ex-open operation is under way
14 From ex-open status, the close operation is under way
18 Ex-pen completion status

18

HCD-GX355/GX555/RG270/RG475/RG575

The 7th and 8th digit from the left indicates:
(Motor status display)

The 7th and 8th digit from the left indicates which motor output
status when an error occurred is indicated.

Display Status

× 0 No table motor output
× 1Table motor forward output
× 2Table motor backward output
× 3Table motor break output

0 × No loading motor output
1 × Loading motor forward output
2 × Loading motor backward output
3 × Loading motor break output

The 9th and 10 th digit from the left indicates:
(Tray status display)

The 9th and 10th digit from the left indicates which target processing
when an error occurred is indicated.

Display Status

01 Open operation
12 Close operation
18 Ex-open operation

2. Optical Pick-up Error Code Mode

When this mode is entered, optical pick-up error code is displayed
with the 8-character format on the fluorescent indicator tube.

The first digit from the left indicates:

The first digit from the left indicates which mode the error history
is. In the optical pick-up error code mode, “D” is displayed on the
fluorescent indicator tube.

The second digit from the left indicates:
(Error history No. display)

The second digit from the left indicates which order the error history
is. “1” indicates the latest error history, and each time the number
increases by one, the error history goes back to one-previous error .

The 5th and 6th digit from the left indicates:
(Error step display)

The 5th and 6th digit from the left indicates which processing when
a trouble occurred

Display Contents

01 Power OFF in progress
02 Initialize in progress
03 Oscillation stopping
04 From oscillation stop, oscillation starting
05 Stopping
06 Stop operation is under way
07 Start operation in progress
08 TOC read in progress
09 Search operation is under way
0A Playback operation is under way
0B Pause operation is under way
0C Playback manual search operation is under way
0D Pause manual search operation is under way
0E —

The 7th and 8th digit from the left indicates:

The 7th and 8th digit from the left indicates which operation in
progress when a trouble occurred. (Step of each processing of the
5th and 6th digits is indicated)

5 REPEAT LIMIT CANCEL MODE

Number of repeat for CD playback is 5 times when the repeat mode
is “REPEAT”. This mode is used to enables CD to repeat playback
for limitless times.

Procedure:

1. Press the I/1 button to turn the power on.

2. Press the [CD] button to select “CD”.

3. Press three buttons of x , [CD] and [PLAY MODE/TUNING
MODE] simultaneously.

4. The message “LIMIT OFF” is displayed on the fluorescent
indicator tube momentarily, CD repeat 5 limit is cancelled.

The third and 4th digit from the left indicates:
(Error status display)

The third and 4th digit from the left indicates which error status is
indicated.

Display Status

01 Not focused (TOC read without a disc)
02 GFS NG (TOC read with a disc chucked)
03 Start operation time-over
04 Defocused continuously (Defocused during TOC reading)
05 Q code not entered for specified time
06 Tracking not turned ON
07 Blank disc (Blank disc TOC read)

19

HCD-GX355/GX555/RG270/RG475/RG575

e

p

p

SECTION 5

ELECTRICAL ADJUSTMENTS

CD SECTION

Note:

1. CD Block is basically designed to operate without adjustment.
Therefore, check each item in order given.

2. Use YEDS-18 (3-702-101-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10MΩ impedance.

4. Clean the object lens by an applicator with neutral detergent when the
signal level is low than specified value with the following checks.

• Abbreviation
MX: Mexican model

S-CURVE CHECK

CD board (except MX)
BD board (MX)

TP(FE)
TP(VC)

Procedure:

1. Connect an oscilloscope to TP (FE) and TP (VC) on the CD
board (except MX) or BD board (MX).

2. Press the I/1 button to turn the power on.

3. Load the disc (YEDS-18) and actuate the focus search. (In
consequence of open and close the disc tray, actuate the focus
search)

4. Confirm that the oscilloscope waveform (S-curve) is
symmetrical between A and B. And conf irm peak to peak level
within 3 ± 0.5 Vp-p.

oscilloscop

RF signal waveform

VOLT/DIV : 200mV
TIME/DIV : 500ns

level : 1.3

±

0.3 Vp-

– CD BOARD (Conductor Side) (except MX) –
– BD BOARD (Conductor Side) (MX) –

TP

(VC)

S-curve waveform

symmetry

A

within 3

±

0.5 Vp-

B

Note: • Try to measure several times to make sure than the ratio of A : B

or B : A is more than 10 : 7.

• Take sweep time as long as possible and light up the brightness

to obtain best waveform.

Connecting Location: CD board (except MX)

BD board (MX)

RFAC LEVEL CHECK

CD board (except MX)
BD board (MX)

TP(RFACO)
TP(VC)

Procedure:

1. Connect an oscilloscope to TP (RFACO) and TP (VC) on the
CD board (except MX) or BD board (MX).

2. Press the I/1 button to turn the power on.

3. Load the disc (YEDS-18) and playback.

4. Confirm that oscilloscope waveform is clear and check if RF A C
signal level is correct or not.

Note: Clear RFAC signal waveform means that the shape “ ◊ ” can be clearly

distinguished at the center of the waveform.

oscilloscope

TP

(FE)

IC101

TP

(RFACO)

Connecting Location: CD board (except MX)

BD board (MX)

20

SECTION 6

DIAGRAMS

6-1. BLOCK DIAGRAM – CD SERVO Section –

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

DETECTOR

A

B

C

D

F

E

OPTICAL PICK-UP

BLOCK

(KSM-215DCP)

LASER DIODE

PD

I-V AMP

LD

CD +3V

AUTOMATIC

POWER

CONTROL

Q10

CD DSP

IC101 (1/2) (EXCEPT MX)

IC101 (1/2) (MX)

A

26

B

27

C

28

D

29

F

20

E

19

LD

36

SUMMING

AMP

FOCUS

ERROR

TRACKING

ERROR AMP

APC LD

AMP

RF

AMP

AC_

SUM

FEO

TEO

EQ_

IN

34

24

22

PD

37

RFAC

35

VCA

RFACO

EQ

41

42

45

46

RFACI

ASYI

ASYO

DIGITAL

CLV

PROCESSOR

MDP

6

ASYMMETRY

CORRECTOR

XRST

100

FILTER

51 53

FILI

PCO

FILO

CLTV

DIGITAL PLL

TO SERVO AUTO

SEQUENCER

CPU INTERFACE

DATA

CLOCK

XLAT

31

33 45

32 19

1125052

XPCK

SCOR

SENS

SBSO

98 99115107102 105 104 110 111

SCOR

SBSO

EFM

DEMODULATOR

SUBCODE

PROCESSOR

SQCK

SQSO

EXCK

96 97

EXCK

WFCK

WFCK

XUGF

INTERNAL BUS

GFS

EMPH

68

113

32K

RAM

ERROR

CORRECTOR

D/A

DIGITAL

INTERFACE

117 93

C4M

GENERATOR

D/A

CONVERTER

SELECTOR

LRCK

BCK

PCMD

63 66 65

XTSL

CLOCK

LRCKI

BCKI

62 60 61

PCMDI

XTAO

XTAI

XTACN

AOUT1

AOUT2

77

78

95

81

86

R-CH

X171

16.9344MHz

SCOR, SBSO,

EXCK, WFCK

CD-L

A

B

(Page 22)

(Page 22)

2-AXIS

DEVICE

(TRACKING)

(FOCUS)

M101

(SPINDLE)

M102

(SLED)

O-XLT

I-SCOR

47

O-CD-CLK

O-CD-DATA

SYSTEM CONTROLLER

O-XRST

I-CD-SENS

IC901 (1/4)

MOTOR/COIL DRIVE

IC251 (EXCEPT MX)

IC251 (MX)

CH4OUTF

16

M

M

15

17

18

14

13

12

11

CH4OUTF

CH3OUTF

CH3OUTR

CH1OUTF

CH1OUTR

CH2OUTF

CH2OUTR

MOTOR

DRIVE

MOTOR

DRIVE

DRIVE

DRIVE

MUTE

COIL

COIL

20

CH4IN

CH3FIN

CH3RIN

CH1FIN

CH1RIN

CH2FIN

CH2RIN

(MX)

SWITCHING

IC501

(EXCEPT MX)

OPIN+

24

23

21

4

5

5

7

OPOUT

27

9

10

11

12

13

14

2

CD DSP

IC101 (2/2) (EXCEPT MX)

IC101 (2/2) (MX)

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

PWM GENERATOR

FOCUS/TRACKING/SLED

S101

(LIMIT)

21 23

FEI

TEI

A/D

CONVERTER

FOCUS/

TRACKING/SLED

SERVO DSP

SSTP

7

MIRR,
DFCT, FOK
DETECTOR

SERVO

INTERFACE

SERVO AUTO

SEQUENCER

TO CPU INTERFACE

FOK

MIRR

DFCT

COUT

SCLK

3
1
2

119

108

I-MP3-DI

O-MP3-DATA

O-MP3-CLK

O-MP3-CS
I-MP3-ACK
I-MP3-REQ

O-MP3-LP

O-MP3-RESET

O-MP3-STB

O-XTCN

I-E-1 – I-E-3

29
30
28
39
40
43
44
38
42

34

49O-LM-F
48O-LM-R

51O-TM-F
50O-TM-R

73I-CD-NUMBER-SENS

56I-OPEN-SW

52 – 54

MIDIO

6

MICK

7

MICS

4

MIACK

8

PO11/BUCK/AD14

36

MILP

5

RESET

2
3

STANDBY

LOADING MOTOR DRIVE

IC701

7 FIN
9 RIN

TABLE MOTOR DRIVE

IC712

7 FIN
9 RIN

LEVEL SHIFT

Q731

ROTARY

ENCODER

S711

ADDRESS DETECT

OPEN

CLOSE

4OUT1
2OUT2

4OUT1
2OUT2

TABLE ADDRESS

SENSOR

IC731

DISC TRAY

OPEN/CLOSE

DETECT

M

M

S751

16

19

18 14

SBSY/BCKIB

SFSY/LRCKIB

M751

(LOADING)

M741

(TABLE)

15

SDI0

BCKIA

LRCKIA

MP3 DECODER

IC301 (EXCEPT MX)

IC301 (MX)

11

SDO0

• Abbreviation

MX : Mexican model

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: CD PLAY

: VIDEO

HCD-GX355/GX555/RG270/RG475/RG575

2121

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

6-2. BLOCK DIA GRAM – A UDIO/VIDEO Section –

(Page 23)

(Page 21)

E

A

HP1
(PB)

(DECK-A)

(MX)

JK801

MIC 1

JK802

MIC 2

JK802

MIC

(E2, E51, AR)

J751

AUDIO IN

HP IN

CD-L

L-CH

R-CH R-CH

FM 75Ω

COAXIAL

AM

+9V

(E2, E51, AR)

R-CH

FM/AM TUNER PACK

FM ANT

ANT GND

AM ANT

ANT GND

LC72121 DI

LC72121 DO

LC72121 CLK

LC72121 CE

BIAS OSC

L201

TUNER-L

TUNER-R

TUNED

STEREO

TU MUTE

RDS DATA

RDS CLK

MUTING

Q801

TU-MUTING

(AEP, UK, EE)

R-CH

CLK

TUNED

STEREO

R-D
R-C

MIC AMP

IC801 (1/2)

ECHO LEVEL

DO

DI

CE

VR851

MIC LEVEL

MIC IN

HP/AUX IN

VR801

ECHO AMP

IC802

MIC AMP

IC801 (2/2)

(MX)

63

1

61

3

7

9

11

MD L

CD L

TUNER L

TAPE L

PB OUT1

TAPE A1
TAPE B1

58

MIC

TONE OUT1

37

36

INPUT SELECT,

TONE CONTROL,

ELECTRICAL VOLUME

IC101

SI

AMS OUT

SC

19

40

18

VIN1

SAOUT1

55

35

BBIN1

VOL OUT1

SW OUT

REC OUT1

(MX)

DBFB

VOL OUT1

SW OUT

SBSO
WFCK
SCOR
EXCK

G

C

D

SCHMIT

TRIGGER

IC1005

D-RAM

IC1002

DQ1 – DQ4

A0 – A7

WE

OE

RAS

CAS

(Page 23)

(Page 23)

(Page 23)

1, 2, 24, 259 – 12, 14 – 17

3

22

4

23

B

(Page 21)

R-CH

FEED BACK

SWITCH

Q141

33

25

(GX555/RG475/RG575)

CD GRAPHICS

DECODER

IC1001

6

VIDEO AMP

VIDEO MUTING

X1002

14.31818 MHz

NTSC/PAL

SWITCH

Q1001

LEVEL SHIFT
Q1005, 1009

LEVEL SHIFT
Q1002, 1006

3
5
4
2

25, 27, 29, 3015 – 22

13
28
14
26

DATA
SFSY
SBSY
CLCK

VD0 – VD3

VA0 – VA 7

WE
OE
RAS
CAS

VOUT

XO1

GDET

DEN

MUTE

RESET

44

5960XI1

37

52

54

• Abbreviation

AR : Argentine model
E2 : 120V AC Area in E model
E51 : Chilean and Peruvian models
EE : East European model
MX : Mexican model

• R-ch is omitted due to same as L-ch.

IC1006

Q1010

J803

VIDEO OUT

VMUTE

CDG-DET

CDG/_BGC

MUTE_DATA

CDG-RST

• SIGNAL PATH

: TUNER

: CD PLAY

: TAPE PLAY (DECK-A)

: TAPE PLAY (DECK-B)

: REC

: AUX IN

15

: MIC

: VIDEO

L-CH

HRPE1

(REC/PB/ERASE)

(DECK-B)

R-CH R-CH

ERASE

PB MUTING

Q209

R-CH

REC MUTING

Q205, 207

HCD-GX355/GX555/RG270/RG475/RG575

Q203

90

O-REC/PB

R-CH

BIAS OSC

Q201

REC BIAS

SWITCH

Q231, 232

91

O-BIAS

+9V

DI

DO

CLK

66

65

67

I-LC72121-DI

O-LC72121-DO

O-LC72121-CLK

CE

TUNED

STEREO

68

69

70

I-TUNED

I-STEREO

O-LC72121-CE

R-D

TU-MUTING

71

72

O-ST-MUTE

(AEP, UK, EE)

R-C

18

I-RDS-CLK

I-RDS-DATA

MIC IN

HP/AUDIO IN

82

81

I-MIC

I-HP/AUDIO IN

1

2

92

O-BD3401-CLK

O-BD3401-DATA

BAND-PASS

FILTER

Q111, 112

D923 D921

93

94

I-VACS

I-STREAM

I-TAPE-AMS

SYSTEM CONTROLLER

IC901 (2/4)

2222

(MX)

VMUTE

63

60

O-VMUTE

CDG-DET

CDG/_BGC

59

I-CDG-DET

I-CDG-BGC

MUTE_DATA

57

CDG-RST

58

0-CDG-RST

I-CDG-MUTE-DATA

86

85

O-MOTOR

87

O-B-SOL

O-A-SOL

CAPSTAN/REEL

MOTOR DRIVE

Q341, 342

PLUNGER DRIVE

(DECK-A)

Q345, 346

PLUNGER DRIVE

(DECK-B)

Q343, 344

I-TAPE-A-STAT

I-TAPE-B-STAT

I-REEL-A

I-REEL-B

TAPE MECHANISM

DECK BLOCK

MM

(CAPSTAN/REEL)

(DECK-A)

(DECK-B)

A-HALF

A-MODE

88

89

83

84

REC (REW)

B-HALF

B-MODE

REC (FWD)

A-PHOTO

B-PHOTO

6-3. BLOCK DIAGRAM – AMP Section –

HCD-GX355/GX555/RG270/RG475/RG575

(Page 22)

(Page 22)

(GX555/RG475/RG575)

G

C

D

(Page 22)

DBFB

VOL OUT1

SW OUT

BUFFER

IC251

MUTING

Q251

MUTING

CONTROL

Q261

R-CH

POWER

AMP

IC441

STANDBY

SWITCH

Q489

AMP ON/OFF

Q933

OVER LOAD

DETECT

R-CH

(GX555/RG475/RG575)

TEMPERATURE

DETECT

Q503, 507

BUFFER

Q271

Q441

+

POWER

AMP

IC501

R-CH

DC DETECT

Q481, 482

+

+

+

OVER LOAD

DETECT

Q501

TEMPERATURE

DETECT

Q483, 484

+

+

DC DETECT

Q505, 506

+

PROTECTOR

R-CH

TH441

Q485

R-CH

D035

RELAY DRIVE

Q486

PROTECT

DETECT

Q487

R-CH

RY B+

RELAY SWITCH

Q488

+

RY441

FAN ON/OFF

Q044

RY501

R-CH

FAN DETECT

Q045

HP IN

JK441

+
–

+
–

M001

MM

(FAN)

JK501

+
–

(Page 22)

E

PHONES

L

FRONT SPEAKER

IMPEDANCE
USE 6 – 16Ω

R

SUB WOOFER OUT

IMPEDANCE

USE 6 – 16Ω

J701

23

O-SYS-MUTE

24

O-STK-MUTE

SYSTEM CONTROLLER

IC901 (3/4)

95

I-PROTECTOR

RELAY DRIVE

Q502

SUB WOOFER

ON/OFF

Q274

25

O-SWR

(GX555/RG475/RG575)

• R-ch is omitted due to same as L-ch.

• SIGNAL PATH

: TUNER

HCD-GX355/GX555/RG270/RG475/RG575

2323

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

6-4. BLOCK DIAGRAM – PANEL, POWER SUPPLY Section –

D601 – 606

(FRONT PANEL LED)

(GX555/RG475/RG575)

D608

(FRONT PANEL LED)

FLUORESCENT

S611 – 617,
S621 – 626,
S631 – 638,
S641 – 648,

SW601

FL701

INDICATOR

TUBE

LED DRIVE
Q601 – 606

LED DRIVE

Q608

FL/LED DRIVER

S1 – S21

61 – 67

45 – 58,

G1 – G13

68 – 80

STREAN LED1
– STREAN LED6

26 – 31

32

SW LED

KEY1 – KEY4

19 – 22

IC701

SO1

X2

X1

D611

STANDBY

SYSTEM CONTROLLER

IC901 (4/4)

• Abbreviation

E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E51 : Chilean and Peruvian models
EA : Saudi Arabia model
MX : Mexican model

MAIN POWER

TRANSFORMER

PT901

F907

F904

F905

D908

D301, 302

RY B+

+9V

(MX)

+9V

REGULATOR

IC021

B+ SWITCH

Q041, 042

+9V

REGULATOR

IC011

+16V

AMP B+

AMP B–

VP

RECT

D021 – 024

RECT

D011 – 014

REGULATOR

RECT
D401

B–

Q902

9
8SI1
7SCK1

16CE

6RESET

4

X701

4.19MHz

3

36 I-VFD-DATA
35 O-VFD-DATA
37 O-VFD-CLK

4 O-VFD-CE
3 O-VFD-RESET

22

O-STBY-LED

O-CDG-POWER

O-FRONT-SP-RELAY

CDG +5V

61

27

+5V

REGULATOR

IC1003

FAN B+

B+ SWITCH

Q1007, 1008

M+7V

M+9V

REGULATOR

Q043

S601, 602

S660

VOLUME

REMOTE CONTROL

RECEIVER

IC610

ROTARY

ENCODER

I-SIRCS-IN

7

74 I-KEY0
97 I-POWER, DISPLAY

6 I-VOL-A

21 I-VOL-B

I-AC-PULSE

I-RESET

I-AC-CUT

O-POWER-RELAY

VF1

VF2

20

+3.3V

MP3 +1.5V

12

5

26

RESET SWITCH

Q901

VREF, VDD

VOLTAGE DETECT

IC902

+1.5V

REGULATOR

IC303 (EXCEPT MX)

IC303 (MX)

D902

VCC

D903

Q902

UNREG

+3.3V

REGULATOR

IC006

EVER +10V

REGULATOR

Q903, 904

D007, 008

D001 – 004

D006

D902 – 905

RECT

RECT

RECT

F906

SUB POWER

TRANSFORMER

PT902

(EXCEPT E2, E3, E51, EA)

(E2, E3, E51, EA)

S901

VOLTAGE

SELECTOR

240V

220V

120V

(EXCEPT E2, E3, E51, EA)

RY901

RELAY DRIVE

Q002

W001

(AC IN)

HCD-GX355/GX555/RG270/RG475/RG575

2424

HCD-GX355/GX555/RG270/RG475/RG575

d

Ver. 1.1

• Note For Printed Wiring Boards and Schematic Diagrams

Note on Printed Wiring Board:

• X : parts extracted from the component side.

• Y : parts extracted from the conductor side.

• f : internal component.

• : Pattern from the side which enables seeing.

(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.

Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.

• Indication of transistor

C

Q

B

B

E

Q

CE

These are omitted.

These are omitted.

Note on Schematic Diagram:

• All capacitors are in µF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.

• All resistors are in Ω and 1/
specified.

• f : internal component.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

Note:

The components identi­fied by mark 0 or dotted
line with mark 0 are criti­cal for safety.
Replace only with part
number specified.

• A : B+ Line.

• B : B– Line.

• Voltages and waveforms are dc with respect to ground

under no-signal conditions.
– CD/BD Section –
no mark :CD PLAY
– CD-G Section –
no mark : CD-G PLAY
– Other Sections –
no mark : FM
(): CD PLAY
〈〈 〉〉 : TAPE PLAY
[]: T APE REC

∗ : Impossible to measure

• Voltages are tak en with a V OM (Input impedance 10 MΩ).

Voltage variations may be noted due to normal produc­tion tolerances.

• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc­tion tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : TUNER (FM/AM)
E : TAPE PLAY (DECK A)
d : TAPE PLAY (DECK B)
G : REC
J : CD PLAY
f : AUX IN
N : MIC
L : VIDEO

• 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
EA : Saudi Arabia model
EE : East European model
MX : Mexican model
RU : Russian model
SP : Singapore model

4

W or less unless otherwise

Note:

Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
pièce portant le numéro
spécifié.

• Circuit Boards Location

SW board

MOTOR (LD) board

MIC board
(E2, E51, MX)

TRANSFORMER board

PANEL board

VOL board

CD-G board (MX)

SUB TRANS board

AC1 board

BD board (MX)/
CD board (EXCEPT MX)

SENSOR board

DRIVER board

MOTOR (TB) boar

VIDEO OUT board (MX)

MAIN board

SUB WOOFER board
(GX555/RG475/RG575)

HCD-GX355/GX555/RG270/RG475/RG575

POWER board

AUDIO IN board

HEADPHONE board

MAIN board

2525

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

6-5. PRINTED WIRING BOARD – CD Board – (Except MX model)

1 2 3 4 5 6 7 8 9

A

CD BOARD

(COMPONENT SIDE)

R121

C123

C195

R352
R353

C501
R501

B

C

D

FB301

R201

R205

C201

C203

C302

C303

C305

C210

R313

C315
C316

C314

C312

R162

165

R

171

X

405

R

351

R

R354

R302

C308

R191

173

R

C174

C196

C172

R172

171

171

C

R

C134

C125

C318

C184

C183

C182

C209

C151

• See page 25 for Circuit Boards Location.

C255

IC501

C257

C258

C259

C14

C10

C15

11

12

R

C18

R

C11

C16

R13

Q10

R10

E

C260

R253

C116

C12

C13

C17

1-860-502-

: Uses unleaded solder.

CD BOARD

(CONDUCTOR SIDE)

C252

IC251

R252

C251

TP (VC)

113
C

R

113

C112
C111

114

R

TP (FE)

PICK-UP BLOCK

112

R

CN101

OPTICAL

(KSM-215DCP)

C114

251
R

13

(13)

C320

C115

R111

M101

(SPINDLE)

M

S101

(LIMIT)

R411

C307

C309

C122

TP (RFACO)

C306

17

307
R

IC301

32

R303

R407

IC101

C124

R132

C163

IC303

13

54

R404

R403

R419

C313

116

4833

C310

C212

R163

132

133

C

C

141
R

143

R133

R

131

C131

R

R301

64

R306

49

R409

C211

C143

R142

C141

C142

C311

C317
R305

R402

R401

213
C

410
R

408
R

412

C194

R

406
R

182
R

C181

C162

181

C161

151

R

R203

R

161

R

M102

M

(SLED)

186
C

R204

C185

CN201

CN202

1-860-502-

MAIN BOARD

A1

CN301

(Page 32)

13

(13)

E

HCD-GX355/GX555/RG270/RG475/RG575

2626

HCD-GX355/GX555/RG270/RG475/RG575

Ver. 1.1

6-6. SCHEMATIC DIAGRAM – CD Board – (Except MX model)

R307

C307

10k

0.1

MP3REQ

R303
100k

C310

0.1

(Page 35)

FB301

C314

TP433

MP3VDD

WE/SDO1

SDO2

CS/RAS/

PO12

AD15/CAS/

PIO7/BUS3/IO7

SDO3/OE

PO9/AD12

PO08/AD11

VDDM

SRMSTB

VDDT

AD10

AD9

AD8

PO07/AD7

PO06/AD6

PO05
AD5/

47
4V

CN201

27P

M+7V

M-GND

M-GND

MP3-STB

MP3-REQ

MP3-ACK

MP3-CLK

MP3-DIO

MP3-LP

MP3-CS

MP3(3.3V)

MP3-RST

MP3-GND

SCOR

CD-SENS

CD-CLK

XLT

CD-DATA

XRST

XTCN

AVDD(3.3V)

R-CH

A-GND

L-CH

D-GND

DOUT

DVDD(3.3V)

PIO6/FI3/BUS2/IO7

PIO4/FI1/BUS0/IO4

PIO5/FI2/BUS1/IO5

PO11/BUCK/AD14

PO10/CCE/AD13

AD0/PO00

AD1/PO01

AD3/PO03

AD2/PO02

AD4/PO04

C312C313

C311 C309

0.10.1

0.1 0.1

VOUT

C305 TP422

C302 C303

220

0.1 0.1
4V

TP186

TP187

TP401

TP402

TP403

TP404

TP405

TP406

TP407

TP408

R205

TP417

TP416

TP415

TP414

TP413

TP412

TP419

TP434

TP410

TP411

TP409

R204

PIO3/IO3

PIO2/IO2

MP3 DECODER

TC94A34FG-002

VDD

VSS

C308

47
4V

STBY

NC

MVDD

MGND

MP3STB

MP3REQ

MIACK

MICK

MIDIO

MILP

MICS

MP3RST

0

SCOR

SENS

CLK

XLT

DATA

XRST

XTCN

AVDD

ROUT

LOUT

DOUT

PIO0/SDI2/IO0

PIO1/SDI3/IO1

IC301

VDDX

CKO/PO13/AD16

R306

VIN

GND

VSS

IRQ/FIO

XO

0

CKI/CLOCK/

XI

+1.5V REGULATOR

VDD

VSSX

IC303

BH15FB1WG

R411

R410

R409

R408

R407

R406

R412

TXO

TEST

SBSY/BCKIB

SFSY/LRCKIB

VSSP

MIMD

MP3GND

MP3STB

MP3REQ

MIACK

MIDIO

MP3RST

100

100

100

100

100

100

100

SDI1/

DATA

LRCKIA

BCKIA

SDI0

LRCKO

BCKO

SDO0

MICK

MILP

MICS

STANBY

VCOI

CLOCK

XTACN

MIACK

RESET

R313

VSS

VDDT

MICK

MIDIO

MILP

MICS

VDDP

220

C316C315

0.00220.1

SCOR

C212

SENS

22p

XLT

C211

DATA

220p

XRST

AOUT2

AOUT1

C306

R405

R404

R419

R403

R402

R401

R301
100k

R305
100k

C317

0.01

DOUT

• See page 50 for Waveforms. • See page 50 for IC Block Diagrams.

C142

C151

R203

0

R354

100

R352

100

R351

100

0.1

MIACK

100

MICK

100

MIDIO

MILP

100

MICS

100

MP3STB

100

MP3RST

100

C318

0.01

C213

22p

C320

0

TP435

DVDD

R353

100

10k

R302

R201

AVDD

TP436

C161

0.1

C181

0.1

0

R173

C185
470p

C182

0.1

C186
470p

C201

100
10V

AGND

TP420

C209

0.01

DOUT

C171 R171

22p 470

C172

27p

AOUT1

AOUT2

DGND

TP421

TP427

PCMDI

TP103

LRCK

TP104

PCMD

TP105

BCK

R161

100

C174X171

R172

1M

C183

R181

22

100

6.3V

C184

R182

22

100

6.3V

C203

C162

100

0.1
10V

BCKI

PCMDI

LRCKI

LRCK

VSS

PCMD

BCK

VDD

EMPH

EMPHI

IOVDD2

DOUT

TEST

TEST1

IOVSS2

NC

0.116.9344MHz

XVSS

XTAO

XTAI

XVDD

AVDD1

AOUT1

VREFL

AVSS1

AVSS2

VREFR

AOUT2

AVDD2

NC

IOVDD0

RMUT

LMUT

C501

IC501

TC7S08FU

C143

100

0.1

10V

R151

0

NC

DDCR

XTSL

NC

R165

0

0.1

R501

100

C141

R141

4.7k

AVSS5

VRSEN

AVDD5

DD

DDVROUT

SQCK

SQSO

IOVSS0

XTACN

R162

47k

C210

0.1

C194

0.1

N
C

TA
X

GND

VCCSWITCHING

100p

C133

0.01

R133
180k

R132

10k

VCTL

AVSS3

VSS

DATA

C196

0.1

A
T

T

A

L
X

D

MDP

C131

C125 R121

R131C134

0.1 15k

1M0.1

TP125

0.47

C132

BIAS

ASYI

ASYO

VPCO

CXD3059AR

XLAT

K
C
O
L
C

CD DSP

AVDD3

IC101

SCLK

SENS

VDD

CLOCK

R191

S
N
E
S

MOTOR/COIL

DRIVE

IC251

BA5947FM

TP

RFACI

(RFACO)

330p

C124

RFACI

AVSS4

RFACO

FCK

XUGF

W

ATSK

0

C122C123

0.10.1

LD

PD

NC

_IN

RFC

EG

VDD

SCOR

C2PO

GFS

XPCK

R
O
C
S

JPO004C251R252R251

MDP6800p22k10k

SW
PIN­O

OPIN+

OUTVREF

OPOUT

PREVCC

R
D
F
T

AC_SUM

C4M

R
D
R
T

CH1FIN

CH4CAPA

PDSENS

DCK
W

1RIN

CH

CH4IN

NC

AVDD4

RFDCO

D

C

B

A

VC

FEO

FEI

TEO

TEI

F

E

NC

AVSS0

AVDD0

IOVDD1

FRDR

FFDR

TRDR

TFDR

SRDR

SFDR

IOVSS1

SSTP

MDP

LOCK

VSS

FOK

DFCT

MIRR

COUT

NC

R

R

D

D

FR

FF

CH2FIN

CH2RIN

CH3FIN

CH3RIN

R

R

D
R

FD
S

S

1500p

R143

3.3k

0.1

1k

R142

FILI

PCO

FILO

CLTV

SYSM

XRST

EXCK

SBSO

0.1

100

C163

R163

T
S
R
X

JPO10 R11

APC 0

R253TP418

10kGAIN_SW

C259

0.1

TP423

IOP1

C17
220

4V

R111

1k

(FE)

TP

R113

1k

JPO103

TP428

TP429

TP430

TP431

TP425

TP432

GND

CNF4

MUTE

GND

AUTOMATIC

C18

1000p

R112

TEI

R114

FRDR

FFDR

TRDR

TFDR

SW+

MDP

F-

VCC

POW

VCC

POW

2SB1690K

POWER

CONTROL

2OUTR

CH

CH3OUTR

C16R12

F+T+T

1100k

Q10

15k

15k

TF

CH2OU

CH3OUTF

+

R13

R10

3.3

C111

C112

C113

C114

C115

0.1

T-

CH1OUTR

CH4OUTF

FRDR

FFDR

TRDR

TFDR

SRDR

SFDR

CH1OUTF

CH4OUTR

3300p

3300p

1

TP424

IOP2

D

C

B

A

470p

470p

F

E

MDP

C15

C10

0.1

10

E

C11

10

D

A

B

C

F

TP102

F+

C14

0.1
T-

C116

C195

0.1

C258

0.1

C257

0.1

C252

0.1

C255

0.1

C260

220
10V

F-

100
10V

TP

(VC)

SP-

TP250

SP+

TP251

SL+

TP252

SL-

TP253

VC

VCC

E

TP10

E

D

TP11

D

A

TP12

A

B

TP13

B

C

TP14

C

F

AGND

F

LD

VR

PD

TP15

PD

F+

TP16

F+

T+

TP17

F-

T-

TP18

T-

F-

TP19

F-

CN101

16P

TP426

SW-

S101

(LIMIT)

M101

(SPINDLE)

M102

(SLED)

HCD-GX355/GX555/RG270/RG475/RG575

2727

HCD-GX355/GX555/RG270/RG475/RG575

6-7. PRINTED WIRING BOARD – BD Board – (MX model only)

1 2 3 4 5 6 7 8 9

A

BD BOARD

(COMPONENT SIDE)

R162

C314

C174

R313

R302

C312

C308

R191

R173

C196

C172

R172

171

171
C

R

C134

C195

C125

R121

C123

D

B

C

FB301

R205

R201

C201

C203

C182

C184

C183

C303

C302

C209

C151

C318

X171

C305

C210

C315

C316

165

R

• See page 25 for Circuit Boards Location.

C255

C257

C260

C258

C259

C10

C15

C18

C11

C16

E

Q10

R253

C116

C14

12

11

R

R

C17

R13

R10

1-864-566-

: Uses unleaded solder.

M101

M

C320

R353

R354

R352

(SPINDLE)

C307

R351

17

R307

32

C309

R411

C122

TP (RFACO)

C306

16

IC301

124
C

S101

(LIMIT)

C310

R303

R407

IC101

132
R

R404

1

4833

R133

131
R

C133

R163

C163

C313

131
C

R405

64

49

R419

C132

13

IC303

54

R403

R301

R306

R406

R412

R408

R203

C213

C162

C194

C181

C161

R151

R401

1-864-566-

C317

R305

R402

R182

R161

C186

R181

R204

R423

11

(11)

C311

R410

R409

C211

C212

C143

141
R

R142

C141

143
R

C142

M102

M

(SLED)

CN201

C185

421
R

R422

A2

MAIN BOARD

CN301

(Page 32)

BD BOARD

(CONDUCTOR SIDE)

C251

IC251

C114

112

R

R111

CN101

OPTICAL

(KSM-215DCP)

C115

C113

113
R

TP (VC)

114
R

C112
C111

TP (FE)

PICK-UP BLOCK

C252

252

R

251

R

11

(11)

E

HCD-GX355/GX555/RG270/RG475/RG575

2828