Sony HCDXGR-80 Service manual

HCD-XGR80

SERVICE MANUAL

Ver 1.0 2002.03

• HCD-XGR80 is the Amplifier,
CD player, tape deck and tuner
section in LBT-XGR80.

Model Name Using Similar Mechanism HCD-XGR60
CD CD Mechanism Type CDM37B-30BD60C
Section Base Unit Name BU-30BD60C

Optical Pick-up Name A-MAX.3
TAPE

Section

Model Name Using Similar Mechanism HCD-XGR60

E Model

Amplifier section

The following measured at AC 120/220/240V, 50 Hz
DIN power output (rated) 125W x 2 + 125W x 2

watts
(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference)

170 W x 2 + 170 W x 2

(6 ohms at 1 kHz, 10% THD)
Inputs
DJ MIX RETURN*:
(phono jacks) sensitivity 250 mV,

impedance 47 kilohms
GUITAR:
(phone jack) sensitivity 75 mV,

impedance 470 kilohms
PHONO IN:
(phono jacks) sensitivity 3 mV,

impedance 47 kilohms
MIX MIC:
(phone jack) sensitivity 1 mV,

impedance 10 kilohms
GAME INPUT:
(phono jacks) sensitivity 250 mV,

impedance 47 kilohms

SPECIFICATIONS

MD (VIDEO) IN:
(phono jack) sensitivity 450 mV

(250 mV), impedance
47 kilohms

Outputs
DJ MIX SEND*:
(phono jacks) sensitivity 250 mV,

impedance 1 kilohms
PHONES:
(stereo phone jack) accepts headphones of

8 ohms or more
MD (VIDEO) OUT:
(phono jacks) voltage 250 mV

impedance 1 kilohms

FRONT SPEAKER: accepts impedance of 6 to

16 ohms (SUPER WOOFER)

accepts impedance of 6 to

16 ohms (TWEETER & WOOFER)

* Mexican model only

— Continued on next page —

9-873-638-01

2002C0200-1
© 2002.03

COMPACT Hi-Fi STEREO SYSTEM

Sony Corporation

Home Audio Company

Published by Sony Engineering Corporation

HCD-XGR80

CD player section

System Compact disc and 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

Tape player section

Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),

using Sony TYPE I cassette

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 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 interval set at 10 kHz)

531 – 1,710 kHz

(with the interval set at 9 kHz)
Other models: 531 – 1,602 kHz

(with the interval set at 9 kHz)

530 – 1,710 kHz

(with the interval set at 10 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz

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.

General

Power requirements
Mexican model: 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 320 watts

Dimensions (w/h/d) Approx. 355 x 425 x 451 mm
Mass : Approx. 16.4 kg

Supplied accessories: AM loop antenna (1)

FM lead antenna (1)
Speaker cords (4)
Speaker pads (8)
Remote commander (1)
Batteries (2)

Design and specifications are subject to change without notice.

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 .

2

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.

HCD-XGR80

• MODEL IDENTIFICATION
– Rear Panel –

MODEL

E model
E51 model
Mexican model
Argentina model

PART No.

PARTS No.

4-237-748-6s
4-237-748-7s
4-237-748-8s
4-237-748-9s

• Abbreviation
E51 : Chilean and Peruvian model

3

HCD-XGR80

TABLE OF CONTENTS

1. GENERAL

·········································································· 5

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

3. TEST MODE ···································································· 15

4. MECHANICAL ADJUSTMENTS ····························· 17

5. ELECTRICAL ADJUSTMENTS ·······························17

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 – MIC/Guitar Section – ····················· 29
6-8. Printed Wiring Board – MIC/Guitar Section –·················· 29
6-9. Schematic Diagram – Main (1/3) Section – ······················ 30
6-10.Schematic Diagram – Main (2/3) Section – ······················ 31
6-11.Schematic Diagram – Main (3/3) Section – ······················ 32
6-12.Printed Wiring Board – Main Section –····························· 33

6-13.Printed Wiring Board

– CD-L,CD-R,Headphone,Front Input,D-SW Section – ·· 34

6-14.Schematic Diagram

– CD-L,CD-R,Headphone,Front Input,D-SW Section – ·· 35
6-15.Printed Wiring Board – Panel VR Section – ······················ 36
6-16.Schematic Diagram – Panel VR Section – ························ 37
6-17.Printed Wiring Board – Panel FL,TC-A,TC-B Section –· 38
6-18.Schematic Diagram – Panel FL,TC-A,TC-B Section –····· 39
6-19.Printed Wiring Board – PA Section – ································ 40
6-20.Schematic Diagram – PA Section – ··································· 41
6-21. Printed Wiring Board – Sub Amp Section – ····················· 42
6-22.Schematic Diagram – Sub Amp Section –························· 43
6-23. Printed Wiring Board – Trans,Sub Trans Section – ·········· 44
6-24.Schematic Diagram – Trans,Sub Trans Section –·············· 44
6-25. IC Pin Function Description ············································· 46
6-26. IC Block Diagram ····························································· 51

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-XGR80

This section is extracted from
instruction manual.

A – D

A EJECTZ/Z B EJECT wh (13)
AMS./> wa (9, 10)
CD SYNC ql (14, 15)
Direct equalizer qh ej (17)

GUITAR/ROCK/JAZZ/DANCE/
GAME

SALSA/REGGAE/TANGO/

SAMBA/MOVIE
DIRECTION eg (13, 14, 15, 20)
DISC SKIP es (9, 10)
DISC 1 to 5 e; (9)
DISPLAY 2

(23)

1

ek

E – G

EDIT ea (15)
EFFECT 5 (17)
ENTER 5 (8, 15, 17, 19)
FM MODE 8 (12)
FUNCTION qd (7, 9, 10, 14, 20,

22, 26)
GAME qf (22)
GAME INPUT AUDIO L/R wd

(25)
GAME INPUT VIDEO wd (25)
GAME MIXING qg (22)
GROOVE ek (16)
GUITAR DISTORTION wl (21)
GUITAR jack ed (21)
GUITAR LEVEL ef (21)

23

45 76890qa qs

H – R

H SPEED DUB ql (14)
MIC LEVEL ef (20)
MIX GUITAR/KARAOKE wl (20,

21)
MIX MIC jack ed (20)
P FILE 5 (17)
PHONES jack w;
PLAY MODE es (9, 10)
POWER SAVE/DEMO

(STANDBY) 3 (23)
Power stream indicator 6
PUSH OPEN wj (9)
REPEAT es (10)

qd
qf

qg

ej

eh
eg

ef
ed

es
ea

wk

qh

qj
qk

ql
w;
wa

ws

wd

wfwgwhwjwle;

5

HCD-XGR80

S – X

SLEEP 0 (18)
SPECTRUM ANALYZER 4 (20)
SUPER WOOFER ek (16)
SUPER WOOFER MODE ek (16)
SURROUND ek (18)
TIMER SELECT qa (16, 19)
TUNER/BAND 9 (11, 12)
TUNER ENTER wf (11)
TUNER MEMORY wf (11)
TUNING MODE 8 (11, 12)
TUNING - /+ 9 (11, 12)
VOLUME control 7 (10)
X-GROOVE wg (16)

Remote control

This section is extracted from
instruction manual.

BUTTON DESCRIPTIONS

@/1 1

c/CLOCK SET qs

h/H qj eh
x qj eh
.m /M> qj eh
X qk
z REC qk
HX ws
x ws
m /M ws

R/r/T/t (cursor) wk

ALPHABETICAL ORDER

C – F

CD N qg (9)
CLEAR 4 (10)
CLOCK/TIMER SELECT ws (16,

19)

CLOCK/TIMER SET 1 (8, 15,

19)
DISC SKIP w; (9, 10)
DISPLAY qa (23)
EFFECT 9 (17)
ENTER 0 (8, 15, 17, 19)
FILE SELECT +/- qd (17)
FUNCTION 3 (7, 9, 10, 14, 20,

22, 26)

P – V

PRESET - /+ ql
SLEEP wa (18)
SURROUND 5 (18)
TUNER/BAND qf (11, 12)
TUNING - /+ qk (11, 12)
VOL +/- 6 (10)

ws

wa
w;
ql
qk

qj
qh

BUTTON DESCRIPTIONS

@/1 2
nN 78

R/r/T/t

x qh
X qj
m/M qk
./> ql

(cursor)

qs

1

2
3
4

5

6

7

qg
qf

qd

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-XGR80

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

PANEL VR board

MIC/GUITAR board, HEADPHONE board

FRONT INPUT board

D-SW board, CD-L board, Lid (CD) assy, 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)

5

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

3

Five screws (BVTT 3

×

6)

4

Two screws (BVTP 3

×

8

6

6

5

2

Three screws (CASE3 TP2)

7

HCD-XGR80

)

k

2-2. FRONT PANEL SECTION

2

Flat type wire (CN431)

3

Connector (CN311)

7

Screw (BVTP 3 X 8)

8

Lug

4

Connector (CN903)

5

Connector (CN722)

1

(CN371)

9

0

6

Connector (CN806)

qa

Connector (B deck)

Flat type wire

Screw (BVTP 3 X 8

Lug

qg

Front panel section

2-3. TAPE MECHANISM DECK

qd

Four screws (BVTP 3 X 8)

qs

Screw (BVTP 3 X 8)

qf

Claw

1

Flat type wire (15 core)

4

2

Two screws

(BVTP 2.6 X 8)

3

Two screws

(BVTP 2.6 X 8)

5

Tape mechanism dec

Front panel

8

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

y

w;

TC-A board

1

Screw (BVTP 2.6 X 8)

2

3

Bracket (TA)

Lug

qh

Three claws

qa

Five screws (BVTP 2.6 X 8)

qs

Three screws

(BVTP 2.6 X 8)

qk

HCD-XGR80

PANEL FL board

ql

Two claws

0

Two knobs (MIC)

2-5. PANEL VR BOARD

qj

6

Connector

(CN812)

wa

Two claws

Front panel

qf

Four screws

(BVTP 2.6 X 8)

7

Connector

(CN704)

4

Screw

(BVTP 2.6 X 8)

5

Bracket (TA)

qd

Eight screws

(BVTP 2.6 X 8)

9

Flat type wire

(CN601)

qg

(BVTP 2.6 X 8)

ws

TC-B board

8

Connector (CN703)

Four screws

3

Bracket (TA)

4

Knob (VOLUME)

2

Lug

1

Screws

(BVTP 2.6 X 8)

7

0

Eight screws

(BVTP 2.6 X 8)

6

5

Flat type wire

(CN701)

8

(BVTP 2.6 X 8)

9

Lever (EJECT) ass

qa

Nine screws

(BVTP 2.6 X 8)

qs

PANEL VR board

Preess the two buttons (EJECT)

Two screws

Front panel

9

HCD-XGR80

t

)

2-6. MIC/GUITAR BOARD, HEADPHONE BOARD

1

Connector

(CN812)

2

Two screws

(BVTP 2.6 X 8)

3

MIC bracket

4

MIC/GUITAR board

5

Two screws

(BVTP 2.6 X 8)

6

HEADPHONE bracke

2-7. FRONT INPUT BOARD

Front panel

FRONT INPUT board

J804

Front panel

7

HEADPHONE board

10

2

Bumper (Panel)

3

1

Four screws

(BVTP 2.6 X 8

Front panel

4

FRONT INPUT board

2-8. D-SW BOARD, CD-L BOARD, LID (CD) ASSY, CD-R BOARD

5

0

Spring (CD)

qa

Lid (CD) assy

9

Sub panel (CD-L) assy

8

CD-L board

7

Four screws

(BVTP 2.6 X 8)

3

Connector

(CN704)

Two screws

(BVTP 2.6 X 8)

6

4

Two screws

(BVTP 2.6 X 8)

ql

Sub panel

(CD-R) assy

qd

Knob

(CD)

qh

qk

CD-Rboard

qg

Two screws

(BVTP 2.6 X 8)

qs

Connector (CN703)

HCD-XGR80

1

Screw (BVTP 2.6 X8)

2

D-SW board

qf

Two screws

(BVTP 2.6 X 8)

2-9. BACK PANEL, DC FAN, MAIN BOARD

9

Back panel

qd

Flat type wire

(CN401)

qs

DC FAN

(M901)

qj

Four screws

(BVTP 2.6 X 8)

1

Flat type wire (CN441)

8

4

Eight screws

(BVTP 3 X 8)

0

qj

MX model

2

Jumper plug

3

Screw

(BVTP 3 X 8)

5

Two screws

(BVTP 3 X 8)

qa

Two screws

(BVTP 3 X 8)

7

Four screws

(BVTP 3 X 8)

6

Three screws

(BVTP 3 X 8)

Connector (CN961)

MAIN board

qf

Connector (CN441)

qg

Two screws

(BVTP 3 X 8)

qh

Two connectors

(CN901, 902)

11

HCD-XGR80

m

2-10. CD MECHANISM DECK (CDM37B-30BD60C)

1

Flat type wire

(CN401)

4

Three screws

(BVTP 3 X 8)

7

8

2

Connector

(CN411)

6

Two screws (BVTP 3 X 8)

7

3

Four screws (BVTP 3 X 8)

Wire holder

5

Two screws

(BVTP 3 X 8)

qa

CD mechanism deck

(CDM37B-30BD60)

0

Five screws
(BVTP3 × 8)

9

Remove two cables fro

wire holder.

12

2-11. BASE UNIT-1 (BU-30BD60C)

)

2

Boss

3

Base unit
(BU-30BD60C)

1

BU fitting screw

HCD-XGR80

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

1

Two floating screws (DIA.12)

4

Two coil springs

(insulator)

6

Base unit (BU-30BD60C)

2

Two screws

(BVTP 2.6 X 8)

3

Two stoppers

(BU)

Holder (BU30) assy

5

Two coil
springs
(insulator

13

HCD-XGR80

e

2-13. BD BOARD

5

BD board

BU-30BD60C

4

Flat type wire (CN102)

3

Rivet

2-14. 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

1

Remove the two solders.

2

Remove the two solders.

×

8)

3

Step screw

14

2

Bracket (BU)

A

4

Disc tabl

SECTION 3

B

TEST MODE

HCD-XGR80

[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 c/CLOCK SET , 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/NEXT 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 c/CLOCK SET , ENTER/NEXT ,
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.
“J” value increases like 1, 2, 3 ... if turn the . AMS >
JOG dial clock-wise,or it decreases like 0, 9, 8 ... if turn the
. AMS > JOG dial counter-clockwise.
“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 c/CLOCK SET , 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. W ith 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 c/CLOCK SET , 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

15

HCD-XGR80

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

“T APE A AG-1”

Shut off

FWD the tape A

“T APE A AG-2”

2 minutes

Fast forward the tape A

“T APE A AG-3”

Shut off or 20 seconds

RVS the tape A

“T APE A AG-4”

2 minutes

Rewind the tape A

“T APE 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.

16

HCD-XGR80

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 c/CLOCK SET , TUNER 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

17

HCD-XGR80

)

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

L-CH
peak

R-CH
peak

within
1dB

Screw
position

L-CH
peak

Screw
position

R-CH
peak

3. Mode: Playback

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

L-CH

set

R-CH

MD (VIDEO) OUT jack (J701)

L-CH

R-CH

oscilloscope

V

H

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

forward

reverse

Tape Speed Adjustment DECK B

Mode: Playback

test tape
WS-48B
(3 kHz, 0 dB)

set

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

frequency counter

+

–

1. Insert the WS-48B into the deck B.

2. Press the H button on the deck B.

3. Press the H SPEED DUB button in playback mode.
Then at HIGH speed mode.

4. Adjust RV392 on the LEAF SW board do that frequency
counter reads 6,000 ± 180 Hz.

5. Press the H SPEED DUB button.
Then back to NORMAL speed mode.

6. Adjust RV391 on the LEAF SW board so that frequency
counter reads 3,000 ± 90 Hz.

Adjustment Location: MAIN board
Sample value of Wow and Flutter: 0.3% or less W.RMS (JIS)

(WS-48B)

waveform of oscilloscope

in phase 45°90°135°180

good

°

wrong

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

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

18

HCD-XGR80

e

r

+

–

set

recorded
portion

MAIN board
CN301 pin

1

(L-CH)

pin

3

(R-CH)

level meter

REC Bias Adjustment DECK B

Procedure:

1. Mode: Record
FUNCTION: VIDEO

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



50 mV (– 23.8 dB)




600

Ω

blank tap
CS-123

AF OSC

1) 315 Hz

2) 10 kHz

attenuator

set

2. Mode: Playback

recorded
portion

set

MAIN board
CN301 pin
pin

level mete

1

(L-CH)

3

(R-CH)

+

–

3. Confirm playback the signal recorded in step 1 become speci­fication values as follows.
If these values are out of specification values, adjust the R V321
(L-CH) and RV322 (R-CH) on the MAIN board to repeat
steps 1and 2.

Adjustment level: The playback output of 10kHz level difference

against 315 Hz reference should ±0.5 dB.

Adjustment Location: MAIN board

REC Level Adjustment DECK B

Procedure:

1. Mode: Record
FUNCTION: VIDEO

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

AF OSC

315 Hz, 50 mV (– 23.8 dB)

600

Ω

blank tape
CS-123

attenuator

set

2. Mode: Playback

3. Confirm playback the signal recorded in step 1 become speci­fication values as follows.
If these values are out of specification values, adjust the R V351
(L-CH) and RV301 (R-CH) on the MAIN board to repeat steps
1 and 2.

Specification values:

CN301 playback level: 47.2 to 53.0 mV (– 24.3 to – 23.3 dB)

Adjustment Location: MAIN board

– MAIN BOARD (Component Side) –

RV392

TAPE SPEED

(HIGH)

RV301

REC LEVEL

(R-CH)

RV351

REC LEVEL

(L-CH)

RV321

REC BIAS

(L-CH)

1

CN371

IC301

18

1

CN431

1

CN301

RV391

15

TAPE SPEED

(NORMAL)

IC501

3

RV322

REC BIAS

(R-CH)

IN

OUT

MD (VIDEO)

19

HCD-XGR80

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

B

1Vp-p

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

d

6-1. CIRCUIT BOARD LOCATION

HCD-XGR80

SECTION 6

DIAGRAMS

PANEL VR board

TC-A board

MIC/GUITAR board

CD-L board

PANEL FL board

CD-R board

TRANS board

SUB TRANS board

TUNER PACK
(FM/AM TUNER UNIT)

HEADPHONE board

FRONT INPUT board

TC-B board

MAIN board

SUB AMP boar

PA 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.

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.

• Abbreviation

: 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

AR : Argentina model
MX : Mexican model
E51 : Chilean and Peruvian model

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.

SENSOR board

D-SW board

MOTOR board

BD board

LED board

2121

HCD-XGR80

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

TRACKING

COIL

FOCUS

COIL

PD1

PD2

I-V AMP

I1-6

I5-10

LD

LD

PD

M101

SPINDLE

MOTOR

M102

SLED

MOTOR

T+

T-

F+

F-

15

M

16

17

M

18

12

11

14

13

FOCUS/TRACKING ERROR AMP

A

6

B

7

C

8

D

9

F

11

F I-V AMP

E

10

E I-V AMP

LD

DRIVE

Q101

FOCUS/TRACKING COIL DRIVE,

SPINDLE/SLED MOTOR DRIVE

SUMMING

LD

APC LD

1

AMP

IC102

CH4OUTF

CH4OUTR

CH3OUTF

CH3OUTR

CH2OUTF

CH2OUTR

CH1OUTF

CH1OUTR

MOTOR

DRIVE

MOTOR

DRIVE

COIL

DRIVE

COIL

DRIVE

CH4SIN

CH3FIN

CH3RIN

CH2FIN

CH2RIN

CH1FIN

CH1RIN

RF AMP,

IC103

RF

AMP

∑

A-D

MUTE

RF EQ

AMP

DC

AMP

FOCUS

ERROR AMP

TRACKING

ERROR AMP

APC PD

AMP

25

24

23

5

6

2

3

20

28

29

30

31

32

33

RFAC

RFDCO

RFDCI

FEI

SW

PD

SFDR

SRDR

TFDR

TRDR

FFDR

FRDR

15

28
29

FE

16
17

TE

18

12

2

FOCUS/TRACKING/SLED

PWM3

PWM1

PWM2

43

39

40

41

FE

TE

SE

RFDC

A/D

CONVERTER

SERVO DSP

PWM GENERATOR

FOCUS/TRACKING/SLED

51

49

48

BUFFER

Q451-454

MIRR/DFCT/

TO SERVO INTERFACE

RFAC

ASYMMETRY
CORRECTION

ASYI

ASYO

DIGITAL

CLV

MDP

26

DIGITAL SERVO

PROCESSOR

IC101 (2/2)

FOK

DETECTOR

3

MIRR

XRST

FOK

DFCT

FILTER

54 56

FILO

PCO

DIGITAL

SUBCODE

PROCESSOR

XLON

XLAT

DATA

14 5 6

24

NC
NC

22

NC

23

53

55

FILI

CLTV

PLL

CPU INTERFACE

SENS

CLOK

8

7

DIGITAL SIGNAL PROCESSOR,

DIGITAL FILTER, D/A CONVERTER

IC101 (1/2)

16K

RAM

EFM

DEMODULATOR

SERVO AUTO

SEQUENCER

SQSO

SCOR

20

1 2

INTERFACE

SQCK

INTERNAL BUS

ERROR

CORRECTOR

SERVO

SSTP

SCLK

9 21

PWM1
PWM2
PWM3

EMPH

COUT

64 15

27

NCNC NC NC NC

When the optical pick-up

ON :

is inner position.

33

SQ-CLK

32

SQ-DATA

19

SCOR

34

SENS

37

CD-CLK

36

XLT
CD-DATA

35

HOLD

40

BU-PWM1

28

BU-PWM2

26
24

BU-PWM3

(CD MECHANISM CONTROL)

43

XRST

PCMD

BCK

D/A

WFCK

(LIMIT)

GFS

18

S101

LRCK
C2PO

SERIAL

INTERFACE

BU UP/DW SW

INTERFACE

SYSTEM CONTROLLER

IC501 (1/4)

62

NC

63

NC

61

NC

19

NC

IN

DIGITAL

OUT

DOUT

60

CD-MUTE

TBL-SENS

LED-DISK

MTR-CTRL1

MTR-CTR2

DIGITAL

FILTER,

NOISE SHAPER

TO MIRR/DFCT/
FOK DETECTOR

5

49

48

(UP SWITCH)

47

Q412

44

45

Q411

DISC TABLE

SENSOR

IC202

S201

LED DRIVE

Q201

PWM

&

INTEGRATOR

TABLE MOTOR DRIVER

IC201

IN2

1

MOTOR

DRIVE

IN1

9

AOUT1

AOUT2

(DISC No.)

D201

70

77

OUT2

OUT1

CLOCK

GENERATOR

3

7

AIN1

71

AIN2

76

M201

M

(TABLE)

BUFFER

TIMING

LOGIC

LOUT1

LOUT2

XTAI

XTAO

72

75

66

67

Q809,810

LEVEL SHIFT

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

• SIGNAL PATH

: CD PLAY (ANALOG)

: CD PLAY (DIGITAL)

R-CH

16.9344MHz

X101

MUTE

Q401

E,E51,AR

J702

R-CH

R-CH

CD-L

(Page 24)

CD DIGITALOUT

OPTICAL

OPTICAL

TRANSCEIVER

IC451

MX

L

SEND

R

DJ MIX

L

RETURN

R

A

2222

–TUNER/TAPE DECK SECTION –

DECK-A

R-CH

HCD-XGR80

IC341

+

HPF

MUTE

Q344,345

AMS DETECT

Q341-343

PB

HEAD

REC/PB

HEAD

ERASE

HEAD

FM

75Ω

AM

DECK-B

TC BLOCK

REC(REW)
REC(FWD)

B-PHOTO
A-PHOTO

B-MODE
A-MODE

B-HALF
A-HALF

A-SOL

B-SOL

CAP M+

MOTOR-L

MOTOR-H

CN371

ANTENNA

R-CH

R-CH

R-CH

C322,L321

RV321

REC

BIAS(L)

T331

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

BIAS

TRAP

ST-CE

1

2

3

BIAS OSC
Q331,332

RIPPLE
FILTER

Q333

R-CH

ST-MUTE
STEREO
TUNED

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

REC/PB SWITCH

IC321

R-CH

TC A+10

ST-L

D

4

Q334,335

(Page 24)

SWITCH

Q321,322

Q383,384

A TRIG

DRIVE

Q381,382

B TRIG

DRIVE

Q385,386

CAP MOTOR

DRIVE

Q387,388

CAP MOTOR
SPEED CONT

RV391

RV392

32

34

21

RV931

TAPE SPEED

LOW

RV932

TAPE SPEED

HIGH

A

B

REC-OUT

70

120

DECK A/B SELECT

PB/REC EQUALIZER AMP

IC301

28 27 26

A/B

NORM/HIGH

13 12 11 15 14

ALC ON/OFF

PB-OUT1

ALC1

REC MUTE ON/OFF

MUTE ON/OFF

PB-L

RV351
REC(L)

LEVEL

23

(CD MECHANISM CONTROL)

REC-L

SYSTEM CONTROL

B

C

(Page 24)

(Page 24)

IC501(2/4)

53

AMS-IN

58

TC-MUTE

61

REC-MUTE

68

ALC

66

EQ-H/N

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

CAPM-H/L

54

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

2323