Sony HCD-XGR66,XGR600,HCD-XGR600 Service Manual

HCD-XGR66/XGR600

US Model

HCD-XGR600

E Model

HCD-XGR66

COMPONENT Hi-Fi STEREO SYSTEM

— Continued on next page —

SPECIFICATIONS

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

Ver 1.0 2003.03

9-877-213-01

2003C0200-1

© 2003.03

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

SERVICE MANUAL

Sony Corporation

Home Audio Company

Published by Sony Engineering Corporation

PHOTO :HCD-XGR66

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

2

HCD-XGR66/XGR600

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

CAUTION

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

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.

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

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

Supplied accessories: AM loop antenna (1)

FM lead antenna (1)

Speaker cords (2)

Speaker pads (8)

Remote Commander (1)

Batteries (2)

Design and specifications are subject to change without notice.

3

HCD-XGR66/XGR600

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.

To Exposed Metal

Par ts on Set

0.15 µF

1.5 kΩ

AC
Voltmeter
(0.75 V)

Earth Ground

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

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)

SAFETY CHECK-OUT

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 –

PART No.

MODEL

E2 model

E51 model

US model

PA RTS No.

4-244-927-1s

4-244-927-2s

4-244-927-3s

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

4

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

5

HCD-XGR66/XGR600

This section is extracted from
instruction manual.

SECTION 1

GENERAL

Main unit

CD SYNC

qf

Deck A

wa

Deck B

ql

DIRECTION

wh

DISC 1 – 5

eh

DISC SKIP

eh

Disc tray

ws

DISPLAY

2

Display window

7

EDIT

wd

EFFECT

eg

ENTER

ed

FM MODE qs
FUNCTION

qa

GAME

wl

GAME INPUT AUDIO L/R jacks

qj

GAME INPUT VIDEO jack qj
GAME MIXING

wk

ILLUMINATION

4

MEMORY

qs

MIC-1/MIC-2 jacks

wf

MIC LEVEL

wg

PARTY*

2

ea

PARTY MODE

es

SAMBA*

2

/ROCK*2/

DISCO*

2

/BALLAD*2/

TECHNO*

2

P FILE

ef

PHONES jack

qg

PLAY MODE

wd

Power illuminator 5
PRESET EQ

es

SALSA/REGGAE/TANGO/
MOVIE/GAME
SAMBA*

1

/ROCK*1/JAZZ*1/

DANCE*

1

/POP*

1

PUSH OPEN

ws

ALPHABETICAL ORDER

A – E F – O

P – Q

qjqkw; qlwaws

wk

wl

wd

wf

wg

wj
wh

qd
qf

qg

23 745 8690qa1

ejeh

ea es edefege;

qs

qh

Remote sensor

3

REPEAT

wd

SLEEP 9
SURROUND*

2

e;

SURROUND*1

ea

TIMER SELECT

8

TUNER ENTER

qs

TUNER/BAND

qs

TUNING +/–

qs

TUNING MODE

qs

VOLUME control

6

X-GROOVE

qk

R – Z

BUTTON DESCRIPTIONS

?/1 (power)

1

c/CLOCK SET

0

z REC

qf

x (stop)

ej

m/M (rewind/fast forward)

ej

NX (play/pause)

ej

h/H (play) qd

wj

x (stop) qd

wj

X (pause)

qd

.m/M> (rewind/fast
forward)

qd wj

./> (go back/go forward)

qh

M/m/</,

ed

A EJECTZ/Z B EJECT

w;

*1 LBT-XGR600 only
*

2

Except for LBT-XGR600

6

HCD-XGR66/XGR600

This section is extracted from
instruction manual.

Remote control

CLEAR 4
CLOCK/TIMER SELECT ws

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

FILE SELECT +/– qd
FUNCTION 3

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

?/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

ALPHABETICAL ORDER

A – E

F – Z

BUTTON DESCRIPTIONS

ql
qk

qj
qh

qg
qf

ws

wa
w;

5

6

7

9

8

q;

3

2

1

4

qd

qs

qa

7

HCD-XGR66/XGR600

SECTION 2

DISASSEMBLY

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

2-1. CASE

• The equipment can be removed using the following procedure.

3

Five screws (BVTT 3x6)

8

Case

4

Tw o screws (BVTP 3x8

)

2

Three screws (CASE3 TP2)

1

Three screws (CASE3 TP2)

5

6

7

Set Case Front panel section Tape mechanism deck

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

PANEL VR board

KEY board

HEADPHONE board, MIC VR board, MIC board

FRONT INPUT board

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

Back panel, DC fan, MAIN board

CD mechanism deck (CDM37B-30BD60C)

Base unit-1 (BU-30BD60C)

Disc table

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

8

HCD-XGR66/XGR600

2-2. FRONT PANEL SECTION

2-3. TAPE MECHANISM DECK

5

Connector (CN722)

1

Flat type wire (CN371

)

2

Flat type wire (CN431)

9

Screw (BVTP 3x8)

0

Lug

6

Connector (CN806)

3

Connector (CN311)

7

Screw (BVTP 3x8)

qs

Screw (BVTP 3x8)

qd

Four screws (BVTP 3x8)

qg

Front panel section

qf

Claw

qa

Connector (B deck)

8

Lugs

4

Connector (CN903)

1

Flat type wire (13 core)

2

Two screws (BVTP 2.6x8)

3

Two screws (BVTP 2.6x8

)

5

Tape mechanism deck

Front panel

4

9

HCD-XGR66/XGR600

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

2

Bracket (TA)

1

Screw (BVTP 2.6x8)

qh Two

claws

qd

Four screws

(BVTP 2.6x8)

qs

Four screws

(BVTP 2.6x8)

w;

GAME board

8

Screw (BVTP 2.6x8)

9

Bracket (MAIN)

0

Four screws (BVTP 2.6x8)

qf

Four screws (BVTP 2.6x8)

qg

Four screws

(BVTP 2.6x8)

3

Screw (BVTP 2.6x8)

4

Bracket (TA)

wg

Three claws

wd

Three claws

Front panel

wh

TC-B board

6

Connector (CN600)

qj

qa

Five screws (BVTP 2.6x8)

7

Flat type wire

(CN601)

qk

PANEL FL

board

wf

TUNER board

5

Connector

(CN700)

ws

TC-A board

wa

Three claws

ql

Two claws

1

Three screws (BVTP 2.6x8

)

4

Five screws (BVTP 2.6x8)

7

KEY board

2

OPERATION PANEL ASSY

5

Three claws

3

Flat type wire (CN801)

Front panel

6

2-5. KEY BOARD

10

HCD-XGR66/XGR600

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

5

Three screws (BVTP 2.6x8)

9 S

crew (BVTP 2.6x8

)

1 S

crew (BVTP 2.6x8)

2 Bracket HP PWB

7

MIC VR board

6

Knob (MIC)

4

Connector (CN812)

8

Two screws (BVTP 2.6x8)

0

MIC board

3

HEADPHONE board

Front panel

3

Flat type wire (CN601)

5

Six screws (BVTP 2.6x8)

4

Flat type wire (CN801

)

7

P ANEL VR board

1

Volume knob

2

Nut (Supplied with S700)

Front panel

6

2-7. PANEL VR BOARD

11

HCD-XGR66/XGR600

1

Five screws (BVTP 2.6x8

)

Front panel

2

Four screws (BVTP 2.6x8)

qg

Screw (BVTP 2.6x8)

qj

Four screws (BVTP 2.6x8)

9

Screw (BVTP 2.6x8)

qa

Four screws

(BVTP 2.6x8)

5

Five claws

qf

DOOR SW

board

qd

Froating screw

(DIA.12)

0

BRACKET (S/P) (L)

qs

CD-L board

8

Sub panel CD ASSY

qk

CD-R board

qh

BRACKET (S/P) (R)

4

Connector (CN600)

3

Connector (CN700)

6

7

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

1

Five screws (BVTP 2.6x8

)

4

FRONT INPUT board

Front panel

2

Bumper ASSY

J500

FRONT INPUT board

Front panel

3

2-8. FRONT INPUT BOARD

12

HCD-XGR66/XGR600

0

DC FAN

(M901)

1

Flat type wire (CN441)

7

Back panel

2

Eight screws

(BVTP 3 X 8)

5

Four screws

(BVTP 3 X 8)

4

Three screws

(BVTP 3 X 8)

qd

Two screws

(BVTP 3 X 8)

qf

Two connectors

(CN901, 902)

3

Two screws

(BVTP 3 X 8)

9

Two screws

(BVTP 3 X 8)

8

Connector (CN961)

qs

Connector (CN411)

qa

Flat type wire

(CN401)

qg

MAIN board

6

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

13

HCD-XGR66/XGR600

qa

CD mechanism deck

(CDM37B-30BD60C)

6

Tw o screws (BVTP 3 X 8)

5

Tw o screws

(BVTP 3 X 8)

4

Three screws

(BVTP 3 X 8)

1

Flat type wire

(CN401)

2

Connector

(CN411)

3

Four screws (BVTP 3 X 8)

Wire holder

0

Five screws
(BVTP3 × 8)

7

7

8

9

Remove two cables fro

m

wire holder.

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

14

HCD-XGR66/XGR600

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

3

Base unit
(BU-30BD60C)

1

BU fitting screw

2

Boss

CD mechanism deck
(CDM37B-30BD60C)

1

Two floating screws (DIA.12)

6

Base unit (BU-30BD60C)

2

Two screws

(BVTP 2.6 X 8)

3

Two stoppers

(BU)

5

Two coil
springs
(insulator

)

4

Two coil springs

(insulator)

Holder (BU30) assy

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

15

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.

1

Remove the two solders.

4

Flat type wire (CN102)

BU-30BD60C

5

BD board

3

Rivet

2

Remove the two solders.

2-14. BD BOARD

1

Screw (BVTP 3

×

8)

2

Bracket (BU)

3

Step screw

4

Disc tabl

e

A

A

16

HCD-XGR66/XGR600

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

\/1

buttons simultaneously.

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.

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.

NR MC GC CD CDDM CDMA

CDM

B

BDABDBSTTATMTC

[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

\/1

button turn to the power

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

\/1

button together with FUNCTION button for
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.

17

HCD-XGR66/XGR600

FWD the tape A

“TAPE A AG-2”

Fast forward the tape A

“TAPE A AG-3”

RVS the tape A

“TAPE A AG-4”

Rewind the tape A

“TAPE A AG-5”

FWD the tape B

“TAPE B AG-2”

Rewind the tape A

“TAPE A AG-1”

Fast forward the tape B

“TAPE B AG-3”

RVS the tape B

“TAPE B AG-4”

Rewind the tape B

“TAPE B AG-5”

Shut off

2 minutes

Shut off or 20 seconds

2 minutes

Shut off

2 minutes

Shut off or 20 seconds

2 minutes

Shut off

Aging mode sequence (Tape deck section):

2. Tape Deck Section

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

• If an error occurred, stop display that step.

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

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):

DISC 1

chucking

TOC Read

Track 1 Play

Tray Tun

Tray Turn

DISC 4

Chucking

2 seconds

Last Track Play

TOC Read

Track 1 Play

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.

2 seconds

2 seconds

18

HCD-XGR66/XGR600

Tor que Measurement

Mode Torque Meter Meter Reading

2.9~6.9 mN•m

FWD (30 to 70 g•cm)

(0.42 – 0.97 oz•inch)

FWD

CQ-102C

0.19~0.59 mN•m

back tension (2 to 6 g•cm)

(0.03 – 0.08 oz•inch)

7.8~16.7 mN•m

FF/REW CQ-201B (80 to 170 g•cm)

(1.11 – 2.36 oz • inch)

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.

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

19

HCD-XGR66/XGR600

Record/Playback Head Azimuth Adjustment
DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback (FWD)

set

MAIN board
MD (VIDEO) OUT jack (J701

)

L-CH, R-CH

+

level meter

test tape
P-4-A100
(10 kHz, – 10 dB)

Screw
position

L-CH
peak

within
1dB

Output
level

L-CH
peak

R-CH
peak

within
1dB

Screw
position

R-CH
peak

3. Mode: Playback

set

test tape
P-4-A100
(10 kHz, – 10 dB)

R-CH

oscilloscope

L-CH

R-CH

V

H

waveform of oscilloscope

in phase 45°90°135°180

°

good

wrong

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

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

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

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

forward

reverse

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.

20

HCD-XGR66/XGR600

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

BD board

Oscilloscope

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.

symmetry

S-curve waveform

within 4

±

1Vp-p

A

B

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

TP(RFDC)
TP(RFAC)

BD board

oscilloscope

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.

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

TP(TE)
TP(DVC)

BD board

oscilloscop

e

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.

B=1.3 ± 0.6Vp-p

symmetry

A (DC voltage

)

center of
waveform

B

0V

Specified level: × 100=less than – 22%

B

A

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

Checking Location:

[BD BOARD]

DVC

RFAC

FE

SE
TE

RFDC

RV101

21

21

HCD-XGR66/XGR600

SECTION 6

DIAGRAMS

Five screws (BVTT 3x6)

MAIN board

TUNER board

TC-B board

HEADPHONE board

CD-R board

FRONT INPUT board

KEY board

PANEL VR board

MIC board

MIC VR board

DOOR SW board

MOTOR board

LED board

BD board

SENSOR board

CD-L board

TC-A board

GAME board

PANEL FL board

TRANS board

SUB TRANS board

TUNER PACK (FM/AM TUNER UNIT)

PA board

6-1. CIRCUIT BOARD LOCATION

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/

4

W or less unless otherwise

specified.

• f : internal component.

•2: nonflammable resistor.

• 5 : fusible resistor.

• C : panel designation.

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.

• A : B+ Line.

• B : B– Line.

• H : adjustment for repair.

•Voltages and waveforms are dc with respect to ground
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

•Voltages are taken with a VOM (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 PALY (DECK A)
d : TAPE PALY (DECK B)
G : RECORD
J : CD PALY (ANALOG OUT)
c : CD PALY (DIGITAL OUT)
N : MIC INPUT

Note:

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

B

These are omitted.

CE

Q

B

These are omitted.

CE

Q

C

B

These are omitted.

E

Q

HCD-XGR66/XGR600

22

22

6-2. BLOCK DIAGRAMS

– CD SERVO SECTION –

SQSO

SQCK

A/D

CONVERTER

CH1OUTF

CH1OUTR

6

7

8

9

15

16

18

11

10

12

2

1

51

49

48

43

24

41

40

39

64 15

28

29

30

31

32

33

24

25

23

5

6

2

3

17

18

15

16

E

B

C

D

A

PD1

PD2

I1-6

I5-10

LD

PWM3

PWM1

PWM2

PD

CD D+5V

F

A

B

C

D

RF

SUMMING

AMP

∑

A-D

FOCUS

ERROR AMP

RF EQ

AMP

DC

AMP

TRACKING

ERROR AMP

RFAC

RFDCO

RFDCI

FE

FEI

RF AMP,

FOCUS/TRACKING ERROR AMP

IC103

TE

E

F

F I-V AMP

E I-V AMP

LD

DRIVE

Q101

APC LD

AMP

APC PD

AMP

BUFFER

Q451-454

LD

LD

PD

LASER DIODE

RFAC

ASYO

ASYI

ASYMMETRY
CORRECTION

DIGITAL

PLL

DIGITAL SIGNAL PROCESSOR,

DIGITAL FILTER, D/A CONVERTER

IC101 (1/2)

DATA

XLAT

CLOK

CD-DATA

X-LAT

CD-CLK

14 5 6

MDP

26

7

8

XLON

3

XRST

DIGITAL

CLV

D/A

INTERFACE

SE

TE

FE

RFDC

FOCUS/TRACKING/SLED

SERVO DSP

FOCUS/TRACKING/SLED

PWM GENERATOR

SFDR

CH3FIN

CH4SIN

CH3RIN

CH3OUTF

CH3OUTR

CH2FIN

T+

T-

F+

F-

CH2RIN

CH1FIN

CH1RIN

20

MUTE

SRDR

TFDR

TRDR

FFDR

FRDR

S101

(LIMIT)

EMPH

WFCK

GFS

MIRR/DFCT/

FOK

DETECTOR

SERVO AUTO
SEQUENCER

SERVO

INTERFACE

CPU INTERFACE

18

63

62

61
19

SENS

20

35

40

36

37

34

19

SCOR

SQ-DATA

SQ-CLK

CD-DATA

XLT

CD-CLK

CD-DATA

X-LAT

CD-CLK

SENS

SCOR

1 2

32

33

SCLK

COUT

9 21

SSTP

27

FOK

22
23

MIRR

DFCT

TO SERVO INTERFACE

CH4OUTF

CH4OUTR

M101

SPINDLE

MOTOR

MOTOR

DRIVE

MOTOR

DRIVE

COIL

DRIVE

CH2OUTF

CH2OUTR

COIL

DRIVE

M

M

M102
SLED

MOTOR

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

IC102

TRACKING

COIL

FOCUS

COIL

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

OPTICAL PICK-UP BLOCK

(A-MAX.3)

SW

PD

I-V AMP

12

11

13

14

54 565355

FILTER

FILO

PCO

CLTV

FILI

EFM

DEMODULATOR

SERIAL

IN

INTERFACE

DIGITAL
FILTER,

NOISE SHAPER

PWM

&

INTEGRATOR

BUFFER

CLOCK

GENERATOR

OPTICAL

TRANSCEIVER

IC451

CD DIGITALOUT

OPTICAL

Q809,810

LEVEL SHIFT

TIMING
LOGIC

MUTE
Q401

DIGITAL

OUT

INTERNAL BUS

16K
RAM

ERROR

CORRECTOR

SUBCODE

PROCESSOR

60

HOLD

26

28

BU-PWM1
BU-PWM2
BU-PWM3

PWM1
PWM2
PWM3

24

43

XRST

XTAI

X101

16.9344MHz

AIN1

AIN2

R-CH

CD-L

AOUT1

AOUT2

TO MIRR/DFCT/
FOK DETECTOR

PCMD

BCK
LRCK
C2PO

DOUT

66

XTAO

67

70

77

LOUT1

LOUT2

72

75

71

76

: CD PLAY (ANALOG OUT)

: CD PLAY (DIGITAL OUT)

SYSTEM CONTROLLER

(CD MECHANISM CONTROL)

IC501 (1/4)

When the optical pick-up
is inner position.

ON :

(Page 24)

A

• SIGNAL PATH

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

MTR-CTRL1

MTR-CTR2

M

TABLE MOTOR DRIVER

IC201

OUT2

OUT1

IN2

IN1

M201

(TABLE)

DISC TABLE

SENSOR

IC202

BU UP/DW SW

S201

(UP SWITCH)

TBL-SENS

MOTOR

DRIVE

49

CD-MUTE

5

48

45

44

LED-DISK

47

1

9

3

7

LED DRIVE

Q201

D201

(DISC No.)

28
29

NC
NC
NC
NC

NCNC NC NC NC

17

NC
NC
NC

Q412

Q411

23

23

HCD-XGR66/XGR600

–TUNER/TAPE DECK SECTION –

PB-L

B

(Page 24)

ST-L

D

(Page 24)

REC-L

C

(Page 24)

PB

HEAD

DECK-A

DECK-B

TC BLOCK

32

BIAS OSC

Q331

A TRIG

DRIVE

• SIGNAL PATH

: PLAYBACK (DECK A)

: PLAYBACK (DECK B)

: RECORD

: TUNER (FM/AM)

R-CH

FM/AM TUNER UNIT

CN371

ANTENNA

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

FM
75Ω

CAP M+

B-SOL

A-SOL

A-HALF

B-HALF

A-MODE

B-MODE

B-PHOTO
A-PHOTO

REC(FWD)

REC(REW)

CAPM-CTRL

B-TRIG

A-TRIG

TC-RELAY

A-HALF

B-HALF

A-PLAY SW

B-PLAY SW

B-SHUT
A-SHUT

REC-A

REC-B

BIAS

PB-A/B

ALC

REC-MUTE

TC-MUTE

AMS-IN

AM

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

70

A

B

120

ST-MUTE
STEREO
TUNED

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

ST-MUTE
STEREO
TUNED

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

34

28 27 26

23

21

65

67

68

61

58

53

50
46

90
89
57
56
91
70
69
51

B TRIG

DRIVE

52

CAP MOTOR

DRIVE

55

21

2
3

27
22

25
23

13 12 11 15 14

SWITCH

Q321,322,327

R-CH

PB-OUT1

ALC1

HPF

Q341,342,344

AMS DETECT

Q343

R-CH

R-CH

R-CH

TC A+10

REC/PB

HEAD

ERASE

HEAD

A/B

NORM/HIGH

ALC ON/OFF

REC MUTE ON/OFF

MUTE ON/OFF

DECK A/B SELECT

PB/REC EQUALIZER AMP

IC301

Q334,335

Q323,325

Q383,384

Q381,382

Q385,386

SYSTEM CONTROL

(CD MECHANISM CONTROL)

IC501(2/4)

REC-OUT

+

T331