Sony HCDXGR-66 Service manual

HCD-XGR66/XGR600

SERVICE MANUAL

Ver 1.0 2003.03

• HCD-XGR66/XGR600 are the Amplifier,
CD player, tape deck and tuner in LBT-
XGR66/XGR600.

PHOTO :HCD-XGR66

Model Name Using Similar Mechanism HCD-XGR6/XGR60

CD CD Mechanism Type CDM37B-30BD60C

Section Base Unit Name BU-30BD60C

Optical Pick-up Name A-MAX.3

TAPE Model Name Using Similar Mechanism NEW

Section Tape Mechanism Type CWM43RR23

US Model

HCD-XGR600

E Model

HCD-XGR66

SPECIFICATIONS

AUDIO POWER SPECIFICATIONS
(LBT-XGR600 USA model only)
POWER OUTPUT AND TOTAL HARMONIC
DISTORTION:

With 6 ohm loads, both channels driven, from 120 – 10,000 Hz: rated 160
watts per channel minimum RMS power, with no more than 10% total
harmonic distortion from 250 milliwatts to rated output.

Amplifier section
LBT-XGR600

Front speaker
Continuous RMS power output (reference):

175 + 175 watts (6 ohms at 1 kHz, 10% THD)

Total harmonic distortion less than 0.07% (6 ohms at 1 kHz, 80 W)

LBT-XGR66

The following measured at AC 120, 220, 230 – 240 V 50/60 Hz
DIN power output (rated):220 + 220 watts (6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference):

250 + 250 watts (6 ohms at 1 kHz, 10% THD)
Inputs
PHONO IN (phono jacks):

sensitivity 3 mV, impedance 47 kilohms
MIC (phone jack): sensitivity 1 mV, impedance 10 kilohms
GAME INPUT AUDIO L/R (phono jacks):

sensitivity 250 mV, impedance 47 kilohms
GAME INPUT VIDEO (phono jack):

1Vp-p, 75 ohms

MD (VIDEO) IN L/R (phono jacks):

sensitivity 450 mV (250 mV),

impedance 47 kilohms
Outputs
PHONES (stereo phone jack): accepts headphones of 8 ohms or more
MD (VIDEO) OUT L/R (phono jacks):

voltage 250 mV, impedance 1 kilohms
VIDEO OUT (phono jack): max. output level 1Vp-p,

load impedance 75 ohms
FRONT SPEAKER: accepts impedance of 6 to 16 ohms

CD player section

System Compact disc digital audio system
Laser Semiconductor laser

(λ=795 nm)

Emission duration: continuous
Frequency response 2 Hz – 20 kHz (±0.5 dB)
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB
CD OPTICAL DIGITAL OUT
(square optical connector jack, rear panel)
Wavelength 660 nm
Output level –18 dBm

— Continued on next page —

9-877-213-01

2003C0200-1

© 2003.03

COMPONENT Hi-Fi STEREO SYSTEM

Sony Corporation

Home Audio Company

Published by Sony Engineering Corporation

HCD-XGR66/XGR600

Tape deck section

Recording system 4-track 2-channel, stereo
Frequency response 50 – 13,000 Hz (±3 dB),

using Sony TYPE I cassettes

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range
North American model: 87.5 – 108.0 MHz (100 kHz step)
Other models: 87.5 – 108.0 MHz (50 kHz step)
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz

AM tuner section

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

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

Other models: 530 – 1,710 kHz

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

(with the tuning interval set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz

General

Power requirements
North American models: 120 V AC, 60 Hz
Other models: 120 V, 220 V or

230 – 240 V AC, 50/60 Hz

Adjustable with voltage selector
Power consumption
LBT-XGR600: 190 watts
LBT-XGR66: 290 watts
Dimensions (w/h/d) (Main Unit) Approx. 355 x 425 x 451 mm

Notes on chip component replacement

• Never reuse a disconnected chip component.

• Notice that the minus side of a tantalum capacitor may be
damaged by heat.

Flexible Circuit Board Repairing

• Keep the temperature of soldering iron around 270˚C
during repairing.

• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).

• Be careful not to apply force on the conductor when soldering
or unsoldering.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous radiation
exposure.

This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.

Mass (Main Unit)
LBT-XGR600: Approx. 13.0 kg
LBT-XGR66: Approx. 15.1 kg

Supplied accessories: AM loop antenna (1)

Design and specifications are subject to change without notice.

FM lead antenna (1)
Speaker cords (2)
Speaker pads (8)
Remote Commander (1)
Batteries (2)

2

HCD-XGR66/XGR600

PART No.

SAFETY CHECK-OUT

After correcting the original service problem, perform the
following safety checks before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC leakage. Check leakage as
described below.

LEAKAGE

The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, must not exceed 0.5 mA (500 microampers).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers’ instructions to use these
instruments.

2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The “limit” indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples of
a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)

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
– Rear Panel –

To Exposed Metal

Par ts on Set

AC

0.15 µF

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 MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.

1.5 kΩ

Earth Ground

Voltmeter
(0.75 V)

MODEL

E2 model

E51 model

US model

• Abbreviation
E2 : Central and South America
E51 : Chilean and Peruvian

PARTS No.

4-244-927-1s

4-244-927-2s

4-244-927-3s

3

HCD-XGR66/XGR600

TABLE OF CONTENTS

1. GENERAL ·········································································· 5

2. DISASSEMBY ··································································· 7

3. TEST MODE ···································································· 16

4. MECHANICAL ADJUSTMENTS ····························· 18

5. ELECTRICAL ADJUSTMENTS ······························· 18

6. DIAGRAMS

6-1. Circuit Board Location ······················································ 21
6-2. Block Diagram – CD Servo Section – ······························· 22

Block Diagram – Tuner/Tape Deck Section – ··················· 23
Block Diagram – Main Section – ······································ 24
Block Diagram

– Display/Key Control/Power Supply Section – ·········· 25
6-3. Printed Wiring Board – BD Section – ······························· 26
6-4. Schematic Diagram – BD Section – ·································· 27
6-5. Printed Wiring Board – Motor LED Section – ·················· 28
6-6. Schematic Diagram –Motor LED Section – ······················ 28
6-7. Schematic Diagram – Main (1/4) Section – ······················ 29
6-8. Schematic Diagram – Main (2/4) Section – ······················ 30
6-9. Schematic Diagram – Main (3/4) Section – ······················ 31
6-10. Schematic Diagram – Main (4/4) Section – ······················ 32
6-11.Printed Wiring Board – Main Section – ····························· 33
6-12. Printed Wiring Board – CD-L, CD-R Section – ················ 34
6-13. Schematic Diagram – CD-L, CD-R Section – ··················· 35
6-14. Printed Wiring Board – TC-A, TC-B Section – ················ 36
6-15. Schematic Diagram – TC-A, TC-B Section – ··················· 37
6-16.Printed Wiring Board – Panel VR, Key Section – ············· 38
6-17. Schematic Diagram – Panel VR, Key Section – ················ 39
6-18.Printed Wiring Board – Panel FL Section – ······················· 40
6-19. Schematic Diagram – Panel FL Section – ························· 41
6-20. Printed Wiring Board – Power Amp Section – ·················· 42
6-21. Schematic Diagram – Power Amp Section –····················· 43
6-22. Printed Wiring Board – Mic Section – ······························ 44
6-23. Schematic Diagram – Mic Section – ································· 44
6-24. Printed Wiring Board – Power Supply Section – ·············· 45
6-25. Schematic Diagram – Power Supply Section – ················· 45
6-26. IC Pin Function Description ············································· 46
6-27. IC Block Diagram ····························································· 47

7. EXPLODED VIEWS

7-1. Case,Back Panel Section ··················································· 54
7-2. Front Panel Section-1 ························································ 55
7-3. Front Panel Section-2 ························································ 56
7-4. Chassis Section ·································································· 57
7-5. CD Mechanism Deck Section
(CDM-30BD60C) ······························································· 58
7-6. Base Unit Section (BU-30BD60C) ···································· 59

8. ELECTRICAL PARTS LIST ······································· 60

4

Main unit

ALPHABETICAL ORDER

SECTION 1

GENERAL

HCD-XGR66/XGR600

This section is extracted from
instruction manual.

A – E F – O

CD SYNC
Deck A
Deck B
DIRECTION
DISC 1 – 5
DISC SKIP
Disc tray
DISPLAY
Display window
EDIT
EFFECT
ENTER

BUTTON DESCRIPTIONS

?/1 (power)

c/CLOCK SET

z REC
x (stop)
m/M (rewind/fast forward)
NX (play/pause)
h/H (play) qd
x (stop) qd
X (pause)
.m/M> (rewind/fast

forward)
./> (go back/go forward)

qh

M/m/</,

A EJECTZ/Z B EJECT

qf
wa
ql

wh

eh

eh

ws

2

7

wd

eg

ed

1

0

qf

ej

ej
wj

wj

qd

qd wj

ed

w;

FM MODE qs
FUNCTION

GAME
GAME INPUT AUDIO L/R jacks

qj

GAME INPUT VIDEO jack qj
GAME MIXING

ILLUMINATION
MEMORY
MIC-1/MIC-2 jacks
MIC LEVEL

ej

wl

qs

qa

wg

wk

4

wf

P – Q

PARTY*
PARTY MODE

P FILE
PHONES jack
PLAY MODE
Power illuminator 5
PRESET EQ

PUSH OPEN

2

ea

es

SAMBA*
DISCO*
TECHNO*

SALSA/REGGAE/TANGO/
MOVIE/GAME
SAMBA*
DANCE*

2

/ROCK*2/

2

/BALLAD*2/

2

ef

qg
wd

es

1

/ROCK*1/JAZZ*1/

1

/POP*

ws

1

R – Z

Remote sensor
REPEAT
SLEEP 9
SURROUND*
SURROUND*1
TIMER SELECT
TUNER ENTER
TUNER/BAND
TUNING +/–
TUNING MODE
VOLUME control
X-GROOVE

wd

qs

qk

2

3

e;
ea

qs

8

qs

qs

6

*1 LBT-XGR600 only

2

*

Except for LBT-XGR600

wl
wk

wj
wh

wg
wf

wd

23 745 8690qa1

ea es edefege;

qs

qd
qf

qg
qh

qjqkw; qlwaws

ejeh

5

HCD-XGR66/XGR600

Remote control

This section is extracted from
instruction manual.

ALPHABETICAL ORDER

A – E

CLEAR 4
CLOCK/TIMER SELECT ws

CLOCK/TIMER SET 1
DISC SKIP w;
DISPLAY qa
EFFECT 9
ENTER 0

F – Z

FILE SELECT +/– qd
FUNCTION 3

PRESET +/– ql
SLEEP wa
SURROUND 5
TUNER/BAND qf
TUNING +/– qk
VOL +/– 6

ws

wa
w;
ql
qk

qj
qh

qg
qf

qd

BUTTON DESCRIPTIONS

?/1 (power) 2
m/M (rewind/fast forward)

qk

./> (go back/go forward)

ql

X (pause) qj
x (stop) qh

M/m/</, (cursor) qs

CD N (play) qg
TAPE AY (play) 8
TAPE BY (play) 7

1

2
3
4

5

6

7
8

9
q;

qa

qs

6

SECTION 2

)

DISASSEMBLY

• The equipment can be removed using the following procedure.

Set Case Front panel section Tape mechanism deck

Back panel, DC fan, MAIN board

CD mechanism deck (CDM37B-30BD60C)

HCD-XGR66/XGR600

PANEL FL board, GAME board, TC-A board,
TUNER board, TC-B board

KEY board

PANEL VR board

HEADPHONE board, MIC VR board, MIC board

FRONT INPUT board

CD-L board, DOOR SW board, CD-R board

Base unit-1 (BU-30BD60C)

Disc table

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

2-1. CASE

8

Case

7

1

Three screws (CASE3 TP2)

Base unit-2 (BU-30BD60C) BD board

3

Five screws (BVTT 3x6)

4

Tw o screws (BVTP 3x8

6

5

2

Three screws (CASE3 TP2)

7

HCD-XGR66/XGR600

)

)

2-2. FRONT PANEL SECTION

7

Screw (BVTP 3x8)

8

3

Connector (CN311)

Lugs

4

Connector (CN903)

5

Connector (CN722)

1

Flat type wire (CN371

2

Flat type wire (CN431)

9

Screw (BVTP 3x8)

qg

Front panel section

2-3. TAPE MECHANISM DECK

qa

Connector (B deck)

qd

Four screws (BVTP 3x8)

1

Flat type wire (13 core)

qs

Screw (BVTP 3x8)

qf

Claw

0

Lug

6

Connector (CN806)

2

Two screws (BVTP 2.6x8)

3

4

Front panel

Two screws (BVTP 2.6x8

5

Tape mechanism deck

8

HCD-XGR66/XGR600

)

2-4. PANEL FL BOARD, GAME BOARD, TC-A BOARD, TUNER BOARD, TC-B BOARD

qa

Five screws (BVTP 2.6x8)

7

Flat type wire

(CN601)

qf

2

Bracket (TA)

ql

Two claws

1

Screw (BVTP 2.6x8)

qh Two

w;

claws

GAME board

ws

TC-A board

qs

Four screws

(BVTP 2.6x8)

5

(CN700)

qk

board

qj

qd

Four screws

(BVTP 2.6x8)

Connector

wd

Three claws

PANEL FL

8

Screw (BVTP 2.6x8)

9

Bracket (MAIN)

0

Four screws (BVTP 2.6x8)

Four screws (BVTP 2.6x8)

wf

TUNER board

qg

Four screws

(BVTP 2.6x8)

wa

Three claws

2-5. KEY BOARD

5

Three claws

Front panel

6

wg

Three claws

3

Screw (BVTP 2.6x8)

4

Bracket (TA)

1

wh

TC-B board

6

Connector (CN600)

Three screws (BVTP 2.6x8

2

OPERATION PANEL ASSY

7

KEY board

3

Flat type wire (CN801)

4

Five screws (BVTP 2.6x8)

Front panel

9

HCD-XGR66/XGR600

)

)

2-6. HEADPHONE BOARD, MIC VR BOARD, MIC BOARD

MIC VR board

7

6

Knob (MIC)

5

Three screws (BVTP 2.6x8)

4

Connector (CN812)

8

Two screws (BVTP 2.6x8)

1 S

crew (BVTP 2.6x8)

2 Bracket HP PWB

0

MIC board

9 S

crew (BVTP 2.6x8

2-7. PANEL VR BOARD

Front panel

3

3

HEADPHONE board

Flat type wire (CN601)

6

5

Six screws (BVTP 2.6x8)

4

Flat type wire (CN801

7

P ANEL VR board

10

2

Nut (Supplied with S700)

1

Volume knob

Front panel

)

)

2-8. FRONT INPUT BOARD

Front panel

FRONT INPUT board

J500

Front panel

HCD-XGR66/XGR600

1

Five screws (BVTP 2.6x8

2

Bumper ASSY

2-9. CD-L BOARD, DOOR SW BOARD, CD-R BOARD

3

Connector (CN700)

7

8

Sub panel CD ASSY

qf

DOOR SW

board

qd

Froating screw

(DIA.12)

5

Five claws

6

3

4

FRONT INPUT board

Front panel

1

Five screws (BVTP 2.6x8

4

Connector (CN600)

qs

CD-L board

0

BRACKET (S/P) (L)

9

Screw (BVTP 2.6x8)

qa

Four screws

(BVTP 2.6x8)

qj

Four screws (BVTP 2.6x8)

qk

CD-R board

qh

BRACKET (S/P) (R)

qg

Screw (BVTP 2.6x8)

2

Four screws (BVTP 2.6x8)

11

HCD-XGR66/XGR600

2-10. BACK PANEL, DC FAN, MAIN BOARD

7

Back panel

0

(M901)

qa

Flat type wire

(CN401)

DC FAN

6

1

Flat type wire (CN441)

2

Eight screws

(BVTP 3 X 8)

3

Two screws

(BVTP 3 X 8)

9

Two screws

(BVTP 3 X 8)

5

Four screws

(BVTP 3 X 8)

4

Three screws

(BVTP 3 X 8)

8

Connector (CN961)

qs

Connector (CN411)

qg

MAIN board

qd

Two screws

(BVTP 3 X 8)

qf

Two connectors

(CN901, 902)

12

m

2-11. CD MECHANISM DECK (CDM37B-30BD60C)

1

Flat type wire

(CN401)

4

Three screws

(BVTP 3 X 8)

7

2

Connector

(CN411)

6

Tw o screws (BVTP 3 X 8)

8

7

HCD-XGR66/XGR600

3

Four screws (BVTP 3 X 8)

Wire holder

5

Tw o screws

(BVTP 3 X 8)

qa

CD mechanism deck

(CDM37B-30BD60C)

0

Five screws
(BVTP3 × 8)

9

Remove two cables fro

wire holder.

13

HCD-XGR66/XGR600

)

2-12. BASE UNIT-1 (BU-30BD60C)

CD mechanism deck
(CDM37B-30BD60C)

3

Base unit
(BU-30BD60C)

2-13. BASE UNIT-2 (BU-30BD60C)

1

Two floating screws (DIA.12)

2

Boss

1

BU fitting screw

6

Base unit (BU-30BD60C)

2

Two screws

(BVTP 2.6 X 8)

3

Two stoppers

(BU)

14

4

Two coil springs

(insulator)

Holder (BU30) assy

5

Two coil
springs
(insulator

2-14. BD BOARD

e

5

BD board

3

Rivet

BU-30BD60C

4

Flat type wire (CN102)

1

Remove the two solders.

HCD-XGR66/XGR600

2-15. DISC TABLE

Note: When the disc table is installed, adjust the positions of roller cam
and mark B as shown in the figure, then set to the groove of disc
table.

A

1

Screw (BVTP 3

×

8)

2

Bracket (BU)

2

Remove the two solders.

3

Step screw

4

Disc tabl

A

15

HCD-XGR66/XGR600

B

SECTION 3

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. Turn the power ON or set to the DEMO mode.

2. Press three buttons of x (TC-B) , TUNER ENTER , and \/1
simultaneously.

3. The set is reset, and displays “COLD RESET”, then becomes
DEMO mode.

[Change-over the AM Tuning Interval]

•The AM tuning interval can be changed over 9 kHz or 10 kHz.

Procedure:

1. Press the \/1 button to turn the power ON.

2. Select the function “TUNER”, and press the TUNER/BAND
button to select the BAND “AM”.

3. Press the \/1 button to turn the power OFF.

4. Press the ENTER and \/1 buttons simultaneously,
and the display on the fluorescent indicator tube changes to
“AM 9 K STEP” or “AM 10 K STEP”, and thus the tuning
interval is changed over.

[CD Ship Mode] (No memory clear)

•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 \/1 button to turn the power ON.

2. Press the EDIT and

3. A message “LOCK” is displayed on the fluorescent indicator
tube, and the CD delivery mode is set.

[LED and Fluorescent Indicator Tube All Lit, Key Check
Mode]

Procedure:

1. Press three buttons of x (TC-B) , TUNER ENTER ,and
DISC 2 simultaneously.

2. LEDs and fluorescent indicator tube are all turned on.

3. Press the DISC 1 button, the MODE and DESTINATION are
displayed fluorescent indicator tube.

4. Each time the DISC 1 button is pressed, the MC/GC category
version is displayed in the following order.

5. Press the DISC 2 button, and the key check mode is acti-vated.

NR MC GC CD CDDM CDMA

6. In the key check mode, the fluorescent indicator tube displays
“K 0 J0 V0”. Each time a button is pressed, “K” value in-creases
to “K69”call the button is pressed.However, once a button is
pressed, it is no longer taken into account.
“V” value increases like 1, 2, 3 ... if turn the VOLUME dial
clockwise (“+” direction), or it decreases like 0, 9, 8 ... if turn
the VOLUME dial counterclockwise (“–” direction).

7. To release from this mode, press three buttons in the same
manner as step 1, or disconnect the power cord.

buttons simultaneously.

\/1

BDABDBSTTATMTC

CDM

[Sled Servo Mode] (CD service mode)

• This mode can run the CD sled motor freely. Use this mode, for
instance, when cleaning the pick-up.

Procedure:

1. Select the function “CD”.

2. Press three buttons x (TC-B) , TUNER ENTER , and
DISC 5 simultaneously.

3. The Sled Servo mode is selected, if “CD” is blanking on the
fluorescent indicator tube.

4. With the CD in stop status, press M button in CD section to
move the pick-up to outside track, or m button to inside track.

5. To exit from this mode, press
OFF.

Note:

•Always move the pick-up to most inside track when exiting from
this mode. Otherwise, a disc will not be unloaded.

• Do not run the sled motor excessively, otherwise the gear can
be chipped.

[Change-over of FUNCTION Name]

•The FUNCTION name of external input terminal can be changed
over to VIDEO or MD. With the FUNCTION selected to “MD”,
about 5dB mute is applied to the input gain.

Procedure:

1. Press \/1 button to turn the power OFF.

2. Press
several seconds, and the power is turned on, the display of
fluorescent indicator tube changes to “MD” or “VIDEO”
instantaneously, and thus the FUNCTION is changed over.

[Aging Mode]

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

• If an error occurred:
The aging operation stops and display then status.

• If no error occurs:
The aging operation continues repeatedly.

Procedure:

1. Load the tapes into the decks A and B respectively.

2. Press the FUNCTION button to select the function “CD”.

3. Press the PLAY MODE button to set the “ALL DISCS” mode,
and press the REPEAT button to “REPEAT” off.

4. Press three buttons of x (TC-B) , TUNER ENTER ,and
DISC 4 simultaneously.

5. The aging mode is activated, if the indicator of disc tray num­ber on the fluorescent indicator tube is blinking.

6. To release from the aging mode, press the \/1 button to turn
the power OFF and operate the cold reset. (Refer to the “MC
Cold Reset”)

1. Display at the Aging Mode

• Display operating state of tape deck section alternately.

• If an error occurred, stop display.

button together with FUNCTION button for

\/1

button turn to the power

\/1

16

HCD-XGR66/XGR600

2. 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

“TAPE A AG-1”

Shut off

FWD the tape A

“TAPE A AG-2”

2 minutes

Fast forward the tape A

“TAPE A AG-3”

Shut off or 20 seconds

RVS the tape A

“TAPE A AG-4”

2 minutes

Rewind the tape A

“TAPE A AG-5”

Shut off

3. CD Section

• The sequence during the aging mode is following as below.

• If an error occurred, stop display that step.

Aging mode sequence (CD section):

Tray Turn

DISC 1

chucking

TOC Read

Track 1 Play

2 seconds

Last Track Play

2 seconds

FWD the tape B

“TAPE B AG-2”

2 minutes

Fast forward the tape B

“TAPE B AG-3”

Shut off or 20 seconds

RVS the tape B

“TAPE B AG-4”

2 minutes

Rewind the tape B

“TAPE B AG-5”

Shut off

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

Tray Tun

DISC 4

Chucking

TOC Read

Track 1 Play

2 seconds

Last Track play

[VACS ON/OFF]

•The volume control by VACS is turned ON/OFF.

Procedure:

1. Press the \/1 button to turn the power ON.

2. Press the PLAY MODE and \/1 buttons simultaneously.

3. The reaction display appears when switcing ON/OFF.

17

HCD-XGR66/XGR600

SECTION 4

MECHANICAL ADJUSTMENTS

Precaution

1. Clean the following parts with a denatured alcohol-moistened
swab:

record/playback heads pinch rollers
erase head rubber belts
capstan idlers

2. Demagnetize the record/playback head with a head demagne­tizer.

3. Do not use a magnetized screwdriver for the adjustments.

4. After the adjustments, apply suitable locking compound to the
parts adjusted.

5. The adjustments should be performed with the rated power sup­ply voltage unless otherwise noted.

Torque Measurement

Mode Torque Meter Meter Reading

2.9~6.9 mN•m

FWD (30 to 70 g•cm)

CQ-102C

FWD

back tension (2 to 6 g•cm)

FF/REW CQ-201B (80 to 170 g•cm)

(0.42 – 0.97 oz•inch)

0.19~0.59 mN•m

(0.03 – 0.08 oz•inch)

7.8~16.7 mN•m

(1.11 – 2.36 oz • inch)

SECTION 5

ELECTRICAL ADJUSTMENTS

DECK SECTION 0 dB = 0.775 V

Precaution

1. Demagnetize the record/playback head with a head demagne­tizer.

2. Do not use a magnetized screwdriver for the adjustments.

3. After the adjustments, apply suitable locking compound to the
parts adjust.

4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.

5. The adjustments should be performed in the order given in
this service manual. (As a general rule, playback circuit
adjustment should be completed before performing recording
circuit adjustment.)

6. The adjustments should be performed for both L-CH and R-CH.

7. Switches and controls should be set as follows unless other­wise specified.

8. Set to the DOLBY NR OFF.

9. Set to the test mode.
(1) Press the \/1 button to turn the power ON.
(2) Select the function “TAPE A or B”.
(3) Press the button of x (TC-B) , ENTER ,and DISC 3
simultaneously, to set the tape deck test mode

and displays “TEST MODE” on the fluorescent indicator
tube.

(4) To release from the test mode, press the \/1 button.

• Test Tape

Tape Signal Used for

P-4-A100 10 kHz, – 10 dB Azimuth Adjustment

WS-48B 3 kHz, 0 dB Tape Speed Adjustment

18

HCD-XGR66/XGR600

)

Record/Playback Head Azimuth Adjustment
DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback (FWD)

test tape
P-4-A100
(10 kHz, – 10 dB)

MAIN board
MD (VIDEO) OUT jack (J701
L-CH, R-CH

level meter

set

+

2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw
so that outputs match within 1dB of peak.

Output
level

within
1dB

within
1dB

L-CH
peak

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

forward

reverse

R-CH

Screw
position

peak

L-CH
peak

R-CH
peak

Screw
position

3. Mode: Playback

MAIN board
test tape
P-4-A100
(10 kHz, – 10 dB)

L-CH

set

R-CH

in phase 45°90°135°180

MD (VIDEO) OUT jack (J701)

L-CH

R-CH

waveform of oscilloscope

good

oscilloscope

wrong

H

V

°

4. Repeat step 1 to 3 in playback (REV) mode.

5. After the adjustments, apply suitable locking compound to the
pats adjusted.

19

HCD-XGR66/XGR600

e

)

CD SECTION

Note :

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

2. Use LUV-P01 (4-999-032-01) unless otherwise indicated.

3. Use an oscilloscope with more than 10M 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.

S-Curve Check

Oscilloscope

BD board

TP(FE)
TP(DVC)

Procedure :

1. Connect oscilloscope to TP (FE).

2. Connect between TP (FE) and TP (DVC ( 1.65 V) by lead
wire.

3. Press the \/1 button to turn the power ON.

4. Load a disc (LUV-P01) and actuate the focus search. (In conse­quence of open and close the disc tray, actuate the focus search)

5. Confirm that the oscilloscope waveform (S-curve) is symmetri­cal between A and B. And confirm peak to peak level within 2
±0.5 Vp-p.

S-curve waveform

symmetry

A

within 4

±

1Vp-p

B

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

clearly distinguished at the center of the waveform.

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

level : 1.45

±

0.3Vp-p

E-F Balance (1 Track jump) Check

oscilloscop

BD board

TP(TE)
TP(DVC)

Procedure:

1. Connect oscilloscope to TP (TE) and TP (DVC) board.

2. Press the \/1 button to turn the power ON.

3. Load a disc (LUV-P01) and playback the number nine track.

4. Press the bB button. (Becomes the 1track jump mode.)

5. Confirm that the level B and A (DC voltage) on the oscillo­scope waveform.

center of
waveform

B

0V

B=1.3 ± 0.6Vp-p

Specified level: × 100=less than – 22%

A
B

symmetry

A (DC voltage

6. After check, remove the lead wire connected in step 2.
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.

RF Level Check

oscilloscope

BD board

TP(RFDC)
TP(RFAC)

Procedure :

1. Connect oscilloscope to TP2 (RFDC) and TP1 (RFAC).

2. Press the \/1 button to turn the power ON.

3. Load a disc (LUV-P01) and playback.

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

6. Adjust RV101 so that A (DC voltage) becomes 0.

Checking Location:

[BD BOARD]

DVC

RFAC

FE

SE
TE

RFDC

RV101

20

Five screws (BVTT 3x6)

6-1. CIRCUIT BOARD LOCATION

HCD-XGR66/XGR600

SECTION 6
DIAGRAMS

GAME board

TC-A board

CD-L board

TRANS board

PANEL FL board

FRONT INPUT board

SUB TRANS board

TUNER PACK (FM/AM TUNER UNIT)

TC-B board

HEADPHONE board

CD-R board

MAIN board

PA board

TUNER board

Note on Schematic Diagram:

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

• All resistors are in Ω and 1/
specified.

• f : internal component.

2

•

• 5 : fusible resistor.

• C : panel designation.

• A : B+ Line.

• B : B– Line.

• H : adjustment for repair.

•Voltages and waveforms are dc with respect to ground

•Voltages are taken with a VOM (Input impedance 10 MΩ).

•Waveforms are taken with a oscilloscope.

• Circled numbers refer to waveforms.

• Signal path.

: nonflammable resistor.

Note:

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

under no-signal conditions.
BD board section
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
( ): TAPE PLAY
< >: TAPE REC
[ ]: CD PLAY

Voltage variations may be noted due to normal produc­tion tolerances.

Voltage variations may be noted due to normal produc­tion tolerances.

F : TUNER (FM/AM)
E : TAPE PALY (DECK A)
d : TAPE PALY (DECK B)
G : RECORD
J : CD PALY (ANALOG OUT)
c : CD PALY (DIGITAL OUT)
N : MIC INPUT

4

W or less unless otherwise

Note on Printed Wiring Boards:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.

(The other layers´ Patterns are not indicated.)

• Indication of transistor.

C

B

B

B

Q

E

Q

CE

These are omitted.

These are omitted.

Q

CE

These are omitted.

KEY board

PANEL VR board

MIC board

MIC VR board

DOOR SW board

MOTOR board

SENSOR board

BD board

LED board

21

21

HCD-XGR66/XGR600

6-2. BLOCK DIAGRAMS

– CD SERVO SECTION –

CD D+5V

A

B

C

D

F

E

OPTICAL PICK-UP BLOCK

(A-MAX.3)

LASER DIODE

PD

PD1

PD2

I-V AMP

I1-6

I5-10

LD

M101

SPINDLE

MOTOR

M102
SLED

MOTOR

LD

PD

M

M

DRIVE

15

16

17

18

RF AMP,

FOCUS/TRACKING ERROR AMP

IC103

A

6

B

7

C

8

D

9

F

11

F I-V AMP

E

10

E I-V AMP

LD

Q101

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

SUMMING

LD

APC LD

1

AMP

IC102

CH4OUTF

CH4OUTR

CH3OUTF

CH3OUTR

MOTOR

MOTOR

DRIVE

DRIVE

CH4SIN

CH3FIN

CH3RIN

AMP

∑

RF

A-D

RF EQ

AMP

DC

AMP

FOCUS

ERROR AMP

TRACKING

ERROR AMP

APC PD

AMP

25

24

23

RFAC

RFDCO

RFDCI

FEI

TE

SW

PD

FILTER

53

54 56

FILO

RFAC

ASYMMETRY
CORRECTION

ASYI

ASYO

DIGITAL

CLV

MDP

26

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

XRST

3

BUFFER

Q451-454

51

49

48

15

28
29

FE

16
17

18

12

2

40

SE

43

39

41

FE

TE

RFDC

A/D

CONVERTER

PWM3

PWM1

PWM2

DIGITAL

SUBCODE

PROCESSOR

XLON

XLAT

DATA

14 5 6

X-LAT

CD-DATA

55

PCO

CLTV

PLL

CPU INTERFACE

CLOK

SENS

8

7

CD-CLK

DIGITAL SIGNAL PROCESSOR,

DIGITAL FILTER, D/A CONVERTER

IC101 (1/2)

FILI

SERVO AUTO

SEQUENCER

16K

RAM

EFM

DEMODULATOR

SQSO

SQCK

SCOR

20

1 2

CD-DATA

INTERNAL BUS

ERROR

CORRECTOR

SERVO

INTERFACE

SSTP

SCLK

COUT

9 21

27

NCNC NC NC NC

When the optical pick-up

ON :

is inner position.

33
32

19

34

CD-CLK

37

X-LAT

36
35

40

PWM1

28

PWM2

26

PWM3

24

D/A

INTERFACE

EMPH

WFCK

64 15

(LIMIT)

SQ-CLK
SQ-DATA

SCOR

SENS

CD-CLK
XLT
CD-DATA

HOLD

BU-PWM1
BU-PWM2
BU-PWM3

GFS

18

S101

PCMD

62

BCK

63

LRCK

61

C2PO

19

SERIAL

IN

INTERFACE

DIGITAL

OUT

60

CD-MUTE

TBL-SENS

BU UP/DW SW

LED-DISK

NC
NC
NC
NC

DOUT

DIGITAL

FILTER,

NOISE SHAPER

TO MIRR/DFCT/
FOK DETECTOR

5

49

48

(UP SWITCH)

47

DISC TABLE

SENSOR

IC202

S201

LED DRIVE

Q201

PWM

&

INTEGRATOR

AOUT1

AOUT2

(DISC No.)

D201

70

77

CLOCK

GENERATOR

AIN1

71

AIN2

76

BUFFER

TIMING

LOGIC

LOUT1

LOUT2

XTAI

XTAO

72

75

R-CH

MUTE

Q401

66

67

X101

16.9344MHz

CD-L

(Page 24)

CD DIGITALOUT

OPTICAL

OPTICAL

TRANSCEIVER

A

IC451

Q809,810

LEVEL SHIFT

TRACKING

COIL

FOCUS

COIL

SFDR

28

SRDR

29

T+

T-

F+

F-

12

11

14

13

CH2OUTF

CH2OUTR

CH1OUTF

CH1OUTR

COIL

DRIVE

COIL

DRIVE

CH2FIN

CH2RIN

CH1FIN

CH1RIN

MUTE

5

6

2

3

20

TFDR

30

TRDR

31

FFDR

32

FRDR

33

PWM GENERATOR

FOCUS/TRACKING/SLED

SERVO DSP

FOCUS/TRACKING/SLED

MIRR/DFCT/

FOK

DETECTOR

TO SERVO INTERFACE

FOK

MIRR

DFCT

24

NC
NC

22

NC

23

22

22

SYSTEM CONTROLLER

(CD MECHANISM CONTROL)

IC501 (1/4)

43

XRST

MTR-CTRL1

MTR-CTR2

TABLE MOTOR DRIVER

IC201

Q412

44

45

Q411

IN2

1

MOTOR

IN1

9

DRIVE

OUT2

OUT1

3

7

M

M201

(TABLE)

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

• SIGNAL PATH

: CD PLAY (ANALOG OUT)

: CD PLAY (DIGITAL OUT)

–TUNER/TAPE DECK SECTION –

HCD-XGR66/XGR600

PB

HEAD

REC/PB

HEAD

ERASE

HEAD

DECK-A

DECK-B

R-CH

R-CH

R-CH

T331

Q323,325

BIAS OSC

Q331

SWITCH

Q321,322,327

TC A+10

Q334,335

32

34

21

A

B

REC-OUT

R-CH

70

120

DECK A/B SELECT

PB/REC EQUALIZER AMP

IC301

+

28 27 26

A/B

NORM/HIGH

13 12 11 15 14

HPF

Q341,342,344

ALC ON/OFF

REC MUTE ON/OFF

AMS DETECT

PB-OUT1

ALC1

MUTE ON/OFF

Q343

23

SYSTEM CONTROL

(CD MECHANISM CONTROL)

IC501(2/4)

53

AMS-IN

58

TC-MUTE

61

REC-MUTE

68

ALC

PB-L

REC-L

B

C

(Page 24)

(Page 24)

FM

75Ω

AM

TC BLOCK

REC(REW)
REC(FWD)

B-PHOTO
A-PHOTO

B-MODE
A-MODE

B-HALF
A-HALF

A-SOL

B-SOL

CAP M+

CN371

ANTENNA

FM/AM TUNER UNIT

ST-LOUT

FM ANT

FM ANT

AM ANT

AM ANT

ST-ROUT

ST-MUTE

STEREO

TUNED

OUT(ST-DIN)
IN(ST-DOUT)

ST-CLK

ST-CE

R-CH

ST-MUTE
STEREO
TUNED

ST-DIN
ST-DOUT
ST-CLK
ST-CE

ST-L

D

(Page 24)

Q383,384

A TRIG

DRIVE

Q381,382

B TRIG

DRIVE

Q385,386

CAP MOTOR

DRIVE

67

PB-A/B
BIAS

65

REC-B

50

REC-A

46

90

B-SHUT
A-SHUT

89
57

B-PLAY SW

56

A-PLAY SW
B-HALF

91

A-HALF

70
69

TC-RELAY

51

A-TRIG

52

B-TRIG

CAPM-CTRL

55

ST-MUTE

21

STEREO

2

TUNED

3

ST-DIN

25

ST-DOUT

23
27

ST-CLK
ST-CE

22

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

• SIGNAL PATH

: TUNER (FM/AM)

: PLAYBACK (DECK A)

: PLAYBACK (DECK B)

: RECORD

23

23