Sony HCDGX-30 Service manual

HCD-GX30/RG22/RG33

SERVICE MANUAL

Ver 1.0 2002. 04

• HCD-GX30/RG22/RG33 are the tuner,
deck, CD and amplifier section in MHC­GX30/RG22/RG33.

CD
Section

Tape deck Model Name Using Similar Mechanism NEW
Section T ape Transport Mechanism T ype CWL43FF48

Canadian Model

HCD-GX30

AEP Model

UK Model

E Model

HCD-RG22/RG33

Australian Model

HCD-RG22

Model Name Using Similar Mechanism HCD-DX10
CD Mechanism Type CDM58F-K6
Optical Pick-up Name

KSM-213DCP/Z-NP

Amplifier section

North American models:
HCD-GX30

Continuous RMS power output (reference)

Total harmonic distortion less than 0.07%

European models:
HCD-RG33

DIN power output (rated) 60 + 60 watts

Continuous RMS power output (reference)

Music power output (reference)

HCD-RG22

DIN power output (rated) 50 + 50 watts

Continuous RMS power output (reference)

Music power output (reference)

75 + 75 watts (6 ohms at
1 kHz, 10% THD)

(6 ohms at 1 kHz, 40 W)

(6 ohms at 1 kHz, DIN)

75 + 75 watts (6 ohms at
1 kHz, 10% THD)

150 + 150 watts (6 ohms
at 1 kHz, 10% THD)

(6 ohms at 1 kHz, DIN)

60 + 60 watts (6 ohms at
1 kHz, 10% THD)

120 + 120 watts (6 ohms
at 1 kHz, 10% THD)

SPECIFICATIONS

Other models:
HCD-RG33

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

Continuous RMS power output (reference)

HCD-RG22

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

Continuous RMS power output (reference)

Inputs
AUDIO INPUT (phono jack):

Outputs
PHONES (stereo mini jack):

Front speaker: accepts impedance of 6 to

Sub woofer speaker (MHC-GX40 only):

(6 ohms at 1 kHz, DIN)

75 + 75 watts (6 ohms at
1 kHz, 10% THD)

(6 ohms at 1 kHz, DIN)

60 + 60 watts (6 ohms at
1 kHz, 10% THD)

voltage 450 mV,
impedance 47 kilohms

accepts headphones of
8 ohms or more

16 ohms

accepts impedance of 12
to 16 ohms

CD player section

System Compact disc and digital

Laser Semiconductor laser

Frequency response 2 Hz – 20 kHz (±0.5 dB)
Wavelength 780 – 790 nm
Signal-to-noise ratio More than 90 dB
Dynamic range More than 90 dB

Tape deck section

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

Tuner section

FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohms unbalanced
Intermediate frequency 10.7 MHz

audio system

(λ=780 nm)
Emission duration:
continuous

using Sony TYPE I
cassette

— Continued on next page —

9-874-001-01

2002D1600-1
© 2002.04

MINI HI-FI COMPONENT SYSTEM

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

HCD-GX30/RG22/RG33

SAFETY CHECK-OUT

AM tuner section

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

European and Middle Eastern models:

Other models: 530 – 1,710 kHz (with the

Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz

General

Power requirements
North American models: 120 V AC, 60 Hz
European models: 230 V AC, 50/60 Hz
Australian model: 230 – 240 V AC,

Argentine models: 220 V AC, 50/60 Hz
Mexican models: 120 V AC, 60 Hz
Other models: 120 V, 220 V or

Power consumption
Canadian models:

MHC-GX30: 125 watts
European models:

MHC-RG33: 125 watts

MHC-RG22: 105 watts

Other models:
MHC-RG33: 125 watts
MHC-RG22: 105 watts
Dimensions (w/h/d)

Mass
North American models:
HCD-GX30: Approx. 9.0 kg
European models:
HCD-RG33: Approx. 9.0 kg
HCD-RG22: Approx. 8.5 kg
Other models:
HCD-RG33: Approx. 9.5 kg
HCD-RG22: Approx. 9.0 kg

Supplied accessories: Remote Commander (1)

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

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

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

50/60 Hz

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

0.5 watts (at the Power
Saving Mode)

0.5 watts (at the Power
Saving Mode)

Approx. 280 × 325 × 412 mm

Batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Front speaker pads (8)

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 microamperes).
Leakage current can be measured by any one of three methods.

1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the 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)

To Exposed Metal

Parts on Set

AC

0.15 µF

Fig. A. Using an A C v oltmeter to check A C leakage.

1.5 kΩ

Earth Ground

Voltmeter
(0.75 V)

Design and specifications are subject to change
without notice.

2

HCD-GX30/RG22/RG33

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 component in this product is capable
of emitting radiation exceeding the limit for
Class 1.

TABLE OF CONTENTS

1. GENERAL ·········································································· 4

2. DISASSEMBLY································································ 6

2-1. Case (Top) ····································································· 6
2-2. CD Door········································································ 7
2-3. Front Panel Section ······················································· 7
2-4. CD Mechanism Deck (CDM58F-K6) ·························· 8
2-5. Tape Mechanism Deck (CWL43FF48)························· 8
2-6. REM Board and PANEL Board ···································· 9
2-7. KEY Board ··································································· 9
2-8. Back Panel Section ····················································· 10
2-9. SUB TRANS Board, VIDEO OUT Board and

SENSOR Board ·························································· 10
2-10. MAIN Board ······························································· 11
2-11. POWER Board···························································· 11
2-12. TRANS Board ···························································· 12
2-13. CD Board and DRIVER Board··································· 12
2-14. SPDL Board································································13
2-15. Optical Pick-up (KSM-123DCP)································ 13
2-16. MOTOR Board, ADDRESS SENSOR Board ············ 14
2-17. Table (New), Cam (Control) and DC Motor··············· 14

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

4. ELECTRICAL ADJUSTMENTS ······························· 17

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.

5. DIAGRAMS······································································19

5-1. Circuit Boards Location·············································· 19
5-2. Block Diagrams ·························································· 20
5-3. Printed Wiring Boards – CD Section (1/2) – ·············· 22
5-4. Printed Wiring Boards – CD Section (2/2) – ·············· 23
5-5. Schematic Diagram – CD Section – ··························· 24
5-6. Printed Wiring Board – MAIN Board – ····················· 25
5-7. Schematic Diagram – MAIN Board (1/4) – ··············· 26
5-8. Schematic Diagram – MAIN Board (2/4) – ··············· 27
5-9. Schematic Diagram – MAIN Board (3/4) – ··············· 28
5-10. Schematic Diagram – MAIN Board (4/4) –················ 29
5-11. Printed Wiring Boards – PANEL Section – ················ 30
5-12. Schematic Diagram – PANEL Section – ···················· 31
5-13. Printed Wiring Boards – POWER/TRANS Section – 32
5-14. Schematic Diagram – POWER/TRANS Section –····· 33
5-15. IC Pin Function Description ······································· 36

6. EXPLODED VIEWS ······················································ 38

6-1. Main Section······························································· 38
6-2. Front Panel Section ····················································· 39
6-3. MAIN Board Section·················································· 40
6-4. CD Mechanism Deck Section (CDM58F-K6) ··········· 41

7. ELECTRICAL PARTS LIST ······································· 42

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 .

ATTENTION AU COMPOSANT AYANT RAPPORT

À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS P AR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMA TIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.

3

HCD-GX30/RG22/RG33

Main unit

SECTION 1

GENERAL

This section is extracted
from instruction manual.

ALPHABETICAL ORDER

A – E

AUDIO jacks ws (24)
CD wj (11, 12, 18)
CD SYNC 7 (18)
Deck A w; (16, 17)
Deck B qh (16 – 19)
DISC 1 – 3 0 (11, 12)
DISC SKIP/EX-CHANGE qa (10,

11)

Disc tray 9 (10)
DISPLAY 2 (16, 21)
EFFECT ON/OFF qj (20)

123 549

wj
wh
wg

wf
wd
ws

G – Z

GAME wf (22, 24)
GAME EQ ql (20, 24)
GAME MIXING 4 (22)
GROOVE 6 (20)
MOVIE EQ 5 (20)
MUSIC EQ 9 (20)
PHONES jack qf
REC PAUSE/START 8 (18)
TAPE A/B wg (16, 18)
TUNER/BAND wh (13 – 15, 18)
VIDEO jack wd (24)
VOLUME control qd

678

BUTTON DESCRIPTIONS

?/1 (power) 1
Z OPEN/CLOSE qs
Z (deck B) qg
M qk
. qk
> qk
X qk
N qk
x qk
m qk
Z (deck A) wa

0
qa

qs

qd

wa
w;

qf

qg
qh

qjqkql

4

HCD-GX30/RG22/RG33

Remote Control

ALPHABETICAL ORDER

A – G

CD ql (11, 12, 18)
CLEAR w; (12)
CLOCK/TIMER SELECT 2

(19, 23)

CLOCK/TIMER SET 9 (10, 19,

23)

DISPLAY 6 (16, 21)
D.SKIP 7 (11)
ENTER qg (10, 12 – 14, 19, 23)
EQ +/– qf (20)
GAME 0 (22, 24)
GROOVE qd (20)

BUTTON DESCRIPTIONS

?/1 (power) 4
M 5
. 5
> 5
X 5
N 5
m 5
x 5

12 34

O – Z

ON/OFF qh (20)
PLAY MODE wa (11, 12, 17)
PRESET +/– 5 (13 – 15)
REPEAT 8 (11)
SLEEP 1 (22)
STEREO/MONO 8 (15)
SURROUND qa (20)
TAPE A/B 9 (16, 18)
TUNER MEMORY qj (13, 14)
TUNER/BAND qk (13 – 15, 18)
TUNING +/– 5 (13 – 15)
VOL +/– qs

Setting the clock

1

Press ?/1 to turn on the system.

2

Press CLOCK/TIMER SET on the
remote.

3

Press . or > on the remote
repeatedly to set the hour.

4

Press ENTER on the remote.

The minute indication flashes.

5

Press . or > on the remote
repeatedly to set the minute.

6

Press ENTER on the remote.

The clock starts working.

To adjust the clock

1 Press CLOCK/TIMER SET on the remote.
2 Press . or > on the remote to select

“CLOCK SET”, then press ENTER on the
remote.

3 Do the same procedures as step 3 to 6

above.

Note

The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.

wa

w;
ql
qk

qj
qh

qg

5

6
7
8

9
0
qa
qs

qd

qf

5

HCD-GX30/RG22/RG33

)

Note : Disassemble the unit in the order as shown below.

SECTION 2

DISASSEMBLY

SET

BACK PANEL SECTION

CD BOARD AND DRIVER BOARD

OPTICAL PICK-UP (KSM-213DCP)

MOTOR BOARD,

CD DOOR CD MECHANISM DECK (CDM58F-K6)CASE (TOP) FRONT PANEL SECTION

SUB TRANS BOARD,SENSOR BOARD AND VIDEO BOARD

MAIN BOARD

SPDL BOARD

ADDRESS SENSOR

BOARD

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

KEY BOARDREM BOARD AND PANEL BOARDTAPE MECHANISM DECK (CWL43FF48)

POWER BOARD

TABLE (NEW),CAM (CONTROL) AND DC MOTOR

TRANS BOARD

2-1. Case (Top)

6

two screws (Case 3 TP2)

7

screw (Case 3 TP2)

9

(+BVTT 3

case (Side-L)

screw

×

qa

qs

case (Top)

qf

8

screw

(+BVTP 3

8)

q;

×

8)

qd

four screws (+BVTP 3

qs

case (Side-R)

5

×

10)

3

screw

(+BVTP 3

1

two screws

(Case 3 TP2)

×

8

4

screw

(+BVTT 3

2

screw (Case 3 TP2)

×

8)

6

2-2. CD Door

)

CD mechanism deck (CDM58F-K6)
1

Turn the pulley to the direction of arrow.

Front panel side

4

CD door

HCD-GX30/RG22/RG33

pulley

2-3. Front Panel Section

6

connector 2p (CN682)

2

Pull-out the disc tray.

4

screw (+BVTP 3

×

3

10)

3

screw (+BVTP 3

qs

front panel

×

10)

7

wire (flat type)

19p (CN733)

5

0

connector 3p (CN303)

2

screw (+BVTP 3

8

9

wire (flat type) 13p (CN207)

×

connector 3p (CN201

10)

qa

connector 7p (CN202)

1

three screws (+BVTT 3

×

6)

7

HCD-GX30/RG22/RG33

)

)

2-4. CD Mechanism Deck (CDM58F-K6)

4

CD mechanism deck (CDM58F-K6)

3

1

screw (+BVTP 3

2

connector 7p (CN734)

×

10

2-5. Tape Mechanism Deck (CWL43FF48)

3

tape mechanism deck

(CWL43FF48)

2

three ground wires

1

six

screws

(+BVTP 2.6

× 8

8

2-6. REM Board and PANEL Board

g

)

2

four
claws

two claws

6

REM

HCD-GX30/RG22/RG33

claw

REM

board

3

eight

board

(+BVTP 2.6

screws

× 8

)

1

volume knob

2-7. KEY Board

three claws

7

PANEL board

two claws

2

KEY board

5

Remove the solderin

(three portions)

4

connector

13p (CN662)

1 four

screws

(+BVTP 2.6

× 8

9

HCD-GX30/RG22/RG33

)

)

2-8. Back Panel Section

3

connector

3p (CN903)

6

7

back panel

1

four

screw

(+BVTP 3

2

two

screw

(+BVTT 3

×

×

10

6)

5

connector

2p (CN505)

2-9. SUB TRANS Board, VIDEO OUT Board and SENSOR Board

4

6

cover (duct)

8

SENSOR board

VIDEO board

4

connector

2p (CN301)

3

screw (+BVTP 3

5

two

screws (+BVTP 3

9

×

10)

two

screws (+BVTP 3

×

10)

×

10

10

7

screw (+BVTP 3

1

screw (+BVTP 3

×

10)

×

10)

2

SUB TRANS board

0

DC fan (M961)

2-10. MAIN Board

)

HCD-GX30/RG22/RG33

4

MAIN board

1

screw (+BVTT 3

×

6

2-11. POWER Board

2 t

hree screws (+BVTT 3

2

connector 13p (CN503)

×

6)

3

connector 13p (CN502)

Main board

1 t

wo screws (+BVTT 3

7 h

eat sink

×

6)

5

connector 13p (CN915)

3

6 POWER

4 t

wo screws (+BVTP 3

board

× 1

6)

11

HCD-GX30/RG22/RG33

)

2-12. TRANS Board

screws (+BVTT 4 × 6)

1 two

2 two

screws (+BVTT 4 × 6)

3 TRANS board

2-13. CD Board and DRIVER Board

3

four s

crews (+BTTP M2.6 )

5

CD board

4

wire (flat type)

2

16p (CN731)

1

connector 10p (CN735)

6

Screw (+BTTP M2.6

8

DRIVER board

7

wire (flat type)

8p (CN702)

12

2-14. SPDL Board

)

)

HCD-GX30/RG22/RG33

1 Remove solder (four places)

2 Remove solder (four places

3 SPDL board

2-15. Optical Pick-up (KSM-213DCP)

7

two insulators

4

two stoppers (BU)

2

holder (BU) assy

0

optical pick-up

(KSM-213DCP)

9

1

screw (+PTPWH M2.6)

6

screw (DIA. 12)

8

two insulators

5 two

screws (+PTPWH M2.6

3

two screws (+BTTP M2.6)

13

HCD-GX30/RG22/RG33

2-16. MOTOR Board, ADDRESS SENSOR Board

2

screw (+PTPWH 2.6

7

8

3

tray

screw (+BTTP M2.6)

×

8)

5

MOTOR board

two screws (+BTTP M2.6)

6

Remove the two solderings of motor.

4

connector 4p (CN722)

9

ADDRESS SENSOR board

1

Pull out the disc tray.

2-17. Table (New), Cam (Control) and DC Motor

*Cautions of an assembly

DC

motor (TURN)

pulley (S)

4 gear (U)

2 screw (STEP)

3 cam (CONTROL)

5 pulley (S)

6 belt

7 DC

claw

motor (TURN)

14

claw

1 table (NEW)

SECTION 3

TEST MODE

HCD-GX30/RG22/RG33

[Change-over of AM Tuner Step between 9 kHz and
10 kHz]

•A step of AM channels can be changed over between 9 kHz and
10 kHz. (Except AEP/UK models)

Procedure:

1. Press ?/1 button to turn the set ON.

2. Select the function “TUNER”, and press TUNER/BAND

button to select the BAND “AM”.

3. Press ?/1 button to turn the set OFF.

4. Press TUNER/BAND and ?/1 buttons simultaneously, and

the display of fluorescent indicator tube changes to “AM 9 k
STEP” or “AM 10 k STEP”, and thus the channel step is changed
over.

[Cold Reset]

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

Procedure:

1. Press three buttons x , GROOVE , and ?/1 simultaneously.

2. The fluorescent indicator tube displays “COLD RESET” and

the set is reset.

[Aging Mode]

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

• If an error occurred:
The aging operation stops and is displayed status.

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

1. Operating method of Aging Mode

Turn on the main power and select “CD” of the function.

1) Set three discs in tray. Select ALL DISCS, and REPEAT OFF.

2) Load the tapes recording use into both decks.

3) Press three buttons x , GAME EQ , and

DISC SKIP/EX-CHANGE simultaneously.

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

5) To exit the aging mode, perform [Cold Reset].

2. Aging mode in CD section

1) Operation during aging mode

• In the agining mode ,the program is excuted in the following
sequence.

(1) The disc tray opens and closes.
(2) The disc tray turns to select a disc 3.
(3) The pickup accesses to the first track, and plays 3 seconds.
(4) The pickup accesses to the last track, and plays 3 seconds.
(5) The disc tray opens and closes.
(6) The disc tray turns to select a disc 1.
(7) The same operation starts like step (3).
(8) After a disc 1 aging operation, a disc 2 is selected.
(9) When an aging operation of a disc 3 is completed, the display

“AGING

∗∗∗∗” value increases.

(10) If no error occurs, the aging operation continues repeatedly.

2) Error display

Disc error

Display Error

E00D01022 Focus error (No disc)

E00D02022 Sub Q error (Focus is good)

E00D02023 TOC reading error

E00D02014 Access error (Unable within regular time)

Mechanism error

Display Error

E00M__E_0 Error during opening tray

E00M__C_2 EX-CHANGE disc error

E00M__D_0 Error during closing tray

E00M__F_3 EX-OPEN error

E00M__D_5 EX-CLOSE error

E00M__C_2 Chuck-up error

E00M__C_3 Unchucking error

3. Aging mode in Tape Deck section

1) Operation during aging mode

• In the agining mode, the program is excuted in the following
sequence.

Step

1

Rewind the TAPE A

2

Rewind the TAPE B

3

Play the TAPE A (1 minute)

4

Stop the TAPE A (1 second)

5

Play the TAPE A (3 minutes)

6

Rewind(AMS) the TAPE A

7

F.F.(AMS) the TAPE A

8

Play the TAPE B (1 minute)

9

Stop the TAPE B (1 second)

10

Record the TAPE B (3 minutes)

11

Rewind(AMS) the TAPE B

12

F.F.(AMS) the TAPE B

Operation

Display

TAPE AAG-1

TAPE BAG-2

TAPE AAG-2

TAPE AAG-3

TAPE AAG-4

TAPE AAG-5

TAPE AAG-6

TAPE BAG-2

TAPE BAG-3

TAPE BAG-4

TAPE BAG-5

TAPE BAG-6

2) Error display

• If error occurred, the display remains like “TAPE BAG-2”.

4. Exiting from the aging mode

• Be sure to perform Cold Reset to exit from the aging mode.

15

HCD-GX30/RG22/RG33

[GC Test Mode]

• All fluorecent segments and LEDs are tested.

•Keyboard check.

Procedure:

1. Press ?/1 button to turn the set ON.

2. To enter the test mode, press the three buttons x , GAME EQ

and DISC 2 simultaneously.

3. All segments and LEDs (without STANDBY LED) are turned
on.

4. Press GAME EQ and DISC 2 buttons simultaneously, and the
key check mode is activated.

5. The message “KEY 0 0 0 0” is displayed.
Each time a button is pressed, the key code number is displayed.

6. Press GAME EQ and DISC 2 buttons simultaneously, and the
key count mode is activated.

7. The message “KEYCNT 0 1” is displayed.
Each time a button is pressed, “KEYCNT 0 1” value increased.
However, once a button is pressed, it is no longer taken into
account.

8. Press GAME EQ and DISC 2 buttons simultaneously, and the
head phone detect mode is activated.

9. The message “H_P OFF” is displayed when a headphone jack
is not inserted.
“H_P ON ” is displayed when a headphone jack is inserted.

10. Press GAME EQ and DISC 2 buttons simultaneously, and the
volume control detect mode is activated.

11. The message “VOLUME FLAT” is displayed.
“VOLUME UP” is displayed if rotating VOLUME knob
clockwise, or “VOLUME DOWN” is displayed if rotating
counterclockwise.

12. To exit from the GC test mode after the volume control detect
mode, press GAME EQ and DISC 2 buttons simultaneously.

[MC Test Mode]

•This mode is used to test the function of the equalizer.

Procedure:

1. Press ?/1 button to turn the set ON.

2. To enter the test mode, press the three buttons x , GAME EQ

and DISC 3 simultaneously.

3. Press the MOVIE EQ button.
The function of the equalizer is set to “MIN”.

4. Press the MUSIC EQ button.
The function of the equalizer is set to “MAX”.

5. Press the P.FILE button.
The function of the equalizer is set to “FLAT”.

6. To exit from this mode, press ?/1 button to turn the set OFF.

[CD Ship Mode (No Memory Clear) ]

•This mode moves the pickup to the position durable to vibra-

tion. Use this mode when returning the set to the customer after
repair.

Procedure:

1. Press ?/1 button to turn the set ON.

2. Select the function “CD”.

3. Press ?/1 button to turn the set OFF.

4. Press CD button and ?/1 button simultaneously.

5. The "STANDBY" display blinks instantaneously, and the CD
ship mode is set.

[Version and Destination Display Mode]

•The version or destination is displayed.

Procedure:

1. Press ?/1 button to turn the set ON.

2. To enter the test mode, press the three buttons x , GAME EQ

and MOVIE EQ simultaneously.

3. The destination is displayed.

4. Press STOP and GROOVE buttons simultaneously.

5. The version is displayed.

6. To exit from this mode, press ?/1 button to turn the set OFF.

[CD Service Mode]

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

Procedure:

1. Press ?/1 button to turn the set ON.

2. Select the function “CD”.

3. To enter the test mode, press three buttons x , GAME EQ ,

and OPEN/CLOSE simultaneously.

4. The CD service mode is selected.

5. With the CD in stop status, press

to outside track, or press . button to inside track.

6. To exit from this mode, perform as follows:

> button to move the pickup

+

–

1) Move the pickup to the most inside track.

2) Press ?/1 button to turn the set OFF.

Note: • Always move the pickup 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.

16

SECTION 4

l

r

T101: NULL

IFT101: AM IF

RV101:
FM TUNED LEVEL

ELECTRICAL ADJUSTMENTS

HCD-GX30/RG22/RG33

TUNER SECTION

AM IF Adjustment

AM RF Signal generator

set

30% amplitude
modulation by
400Hz signal
output level : as low as possible

16

set

headphones jack (JK691)

Procedure:

1. Set the frequency of the AM RF signal generator to 1000 kHz
(at 10 kHz step) or 999 kHz (at 9 kHz step).

2. Tune the set to AM 1000 kHz (at 10 kHz step) or 999 kHz (at 9
kHz step).

3. Adjust IFT101 so that the reading on level meter becomes in
maximum.

AM ANTENNA termina
(JK103)

level mete

Ω

FM Tuned Level Adjustment

FM RF Signal generator

75

Ω

coaxial

set

Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 30 dB (at 75

Ω

open)

FM ANTENNA terminal
(JK103)

Procedure:

1. Supply a 98 MHz signal at 28 dB from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Adjust RV101 to the point (moment) when the TUNED
indicator will change from going off to going on.

Adjustment Location: MAIN board

Null Adjustment

FM RF Signal generator

75

Ω

coaxial

set

Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 60 dB (at 75

Ω

open)

FM ANTENNA terminal
(JK103)

Procedure:

1. Supply a 98 MHz signal at 60 dB from the ANTENNA terminal.

2. Tune the set to 98 MHz.

3. Measure voltage between pin 21 and pin 23 of IC 101. Adjust
T101 until the voltage becomes 0 V.

Adjustment Location: MAIN board

[MAIN BOARD] Component side

17