Sony HCD-RG555 Service Manual

HCD-RG555

SERVICE MANUAL

Ver 1.0 2004.04

• HCD-RG555 is the tuner, deck,
CD and amplifier section in
MHC-RG555.

CD
Section

Tape Deck Model Name Using Similar Machanism NEW
Section T ape Transport Mechanism Type CWM43RR-35

E Model

Model Name Using Similar Mechanism NEW
CD Mechanism Type CDM74-F1BD81
Optical Pick-up Name KSM-215DCP/C2NP

Amplifier section

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

(6 ohms at 1 kHz, DIN)

Continuous RMS power output (reference):

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

Inputs
VIDEO/MD IN (phono jack):

voltage 450/250 mV,
impedance 47 kilohms

GAME INPUT AUDIO L/R (phono jacks):

voltage 250 mV,
impedance 47 kilohms

GAME INPUT VIDEO (phono jack):

1 Vp-p, 75 ohms

MIC (phone jack): sensitivity 1 mV,

impedance 10 kilohms
Outputs
PHONES (stereo mini jack):

accepts headphones of

8 ohms or more
VIDEO OUT (phono jack):max. output level

1 Vp-p, unbalanced, Sync

negative, load impedance

75 ohms
SPEAKER: accepts impedance of 6 to

16 ohms

SPECIFICATIONS

CD player section

System Compact disc and digital

audio system

Laser Semiconductor laser

(λ=770 – 810 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

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

– Continued on next page –

9-877-774-01

2004D04-1
© 2004. 04

MINI Hi-Fi COMPONENT SYSTEM

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

1

HCD-RG555

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
Saudi Arabian model: 531 – 1,602 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
Saudi Arabian model: 120 – 127 V/220 V or

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

Other models: 120 V, 220 V or 230 –

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

Power consumption 155 watts

Dimensions (w/h/d) incl. projecting parts and controls
Amplifier/Tuner/Tape/CD section:

Approx. 280 × 327 × 425 mm

Mass Approx. 10.0 kg

Design and specifications are subject to change without
notice.

2

SAFETY CHECK-OUT

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

LEAKAGE TEST

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

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

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

HCD-RG555

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-v oltage 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

µ

F

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

Ω

1.5 k

Earth Ground

Voltmeter
(0.75 V)

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 P ARTS WHOSE
PART NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR
IN SUPPLEMENTS PUBLISHED BY SONY.

3

HCD-RG555

The release method of a CD disc tray LOCK function

There is a disc lock function for the disc theft prevention for a
demonstration at a shop front in this machine.
Procedue:

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

2. Press two buttons of x and Z (EJECT) simultaneously for
five seconds.

3. The message “LOCKED” is displayed and the tray is locked.
(Even if exiting from this mode, the tray is still locked.)

4. Press two buttons of x and Z (EJECT) simultaneously for
five seconds again.

5. The message “UNLOCKED” is displayed and the tray is
unlocked.

6. T o exit from this mode, press the ?/1 button to turn the set
off.

Unleaded solder

Boards requiring use of unleaded solder are printed with the lead­free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size.)

: LEAD FREE MARK

Unleaded solder has the following characteristics.

• Unleaded solder melts at a temperature about 40°C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350°C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!

• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to flow) than
ordinary solder so use caution not to let solder bridges occur such
as on IC pins, etc.

• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.

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

The laser diode in the optical pick-up block may suffer electrostatic
breakdown 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.

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.

4

TABLE OF CONTENTS

HCD-RG555

1. SERVICING NOTE

1-1. Service Position-1 (AMP Board) ........................................6

1-2. Service Position-2 (BD81A Board) .................................... 6

2. GENERAL

Main Unit ................................................................................ 7

Remote Control ....................................................................... 8

3. DISASSEMBLY

3-1. Case (Top) ......................................................................... 10

3-2. CD Door ............................................................................ 10

3-3. Front Panel Section ........................................................... 11

3-4. CD Mechanism Deck ........................................................ 11

3-5. Tape Mechanism Deck, Mic Jack Board........................... 12

3-6. Panel Board ....................................................................... 12

3-7. Back Panel Section, Sub Trans Board ...............................13

3-8. Trans Board .......................................................................13

3-9. Main Board ....................................................................... 14

3-10. Amp Board ........................................................................ 14

3-11. BD81A Board ................................................................... 15

3-12. Connect Board................................................................... 15

3-13. Driver Board, SW Board................................................... 16

3-14. Optical Pick-up ................................................................. 16

3-15. Sensor Board ..................................................................... 17

3-16. Motor (TB) Board ............................................................. 17

3-17. Motor (LD) Board ............................................................. 18

4. TEST MODE ..................................................................... 19

5. DIAGRAMS

5-1. IC Pin Descriptions ........................................................... 22

5-2. Block Diagram –CD Section–........................................... 27

5-3. Block Diagram –Main Section–........................................ 28

5-4. Block Diagram –Panel/Power Section– ............................ 29

5-5. Circuit Boards Location .................................................... 30

5-6. Note for Printed Wiring Boards

and Schematic Diagrams .................................................. 31

5-7. Waveforms......................................................................... 31

5-8. Printed Wiring Board –CD Mechanism Section (1/2)– .... 32

5-9. Schematic Diagram –CD Mechanism Section (1/2)– ....... 33

5-10. Printed Wiring Boards –CD Mechanism Section (2/2)–... 34

5-11. Schematic Diagram –CD Mechanism Section (2/2)– ....... 35

5-12. Schematic Diagram –Main Section (1/2)– ........................36

5-13. Schematic Diagram –Main Section (2/2)– ........................37

5-14. Printed Wiring Board –Main Section– .............................. 38

5-15. Printed Wiring Boards –Panel Section– ............................ 39

5-16. Schematic Diagram –Panel Section (1/2)– ....................... 40

5-17. Schematic Diagram –Panel Section (2/2)– ....................... 41

5-18. Printed Wiring Boards –Jack Section–.............................. 42

5-19. Schematic Diagram –Jack Section– .................................. 43

5-20. Printed Wiring Board –Power Amp Section– ................... 44

5-21. Printed Wiring Boards –Transformer Section– .................45

5-22. Schematic Diagram –Power Section– ...............................46

5-23. IC Block Diagrams............................................................ 47

6. EXPLODED VIEWS

6-1. Main Section ..................................................................... 50

6-2. Front Panel Section (1)...................................................... 51

6-3. Front Panel Section (2)...................................................... 52

6-4. Front Panel Section (3)...................................................... 53

6-5. Main Board Section .......................................................... 54

6-6. CD Mechanism Section (1) ...............................................55

6-7. CD Mechanism Section (2) ...............................................56

7. ELECTRICAL PARTS LIST ........................................ 57

5

HCD-RG555

d

k

1-1. SERVICE POSITION-1 (AMP BOARD)

To inspect the AMP board, turn both of the front panel
and the CD mechanism deck so that the left side of the product faces down.

CD mechanism deck

SECTION 1

SERVICING NOTE

front panel

AMP boar

1-2. SERVICE POSITION-2 (BD81A BOARD)

Remove the CD mechanism deck and place it on top of the pedestal as shown.
Inspect the BD81A board in this set up.

BD81A board

CD mechanism dec

6

SECTION 2

GENERAL

HCD-RG555

This section is extracted
from instruction manual.

7

HCD-RG555

8

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

SET

3-1. CASE (TOP)

(Page 10)

3-2. CD DOOR

(Page 10)

3-3. FRONT PANEL SECTION

(Page 11)

HCD-RG555

SECTION 3

DISASSEMBLY

3-4. CD MECHANISM DECK

(Page 11)

3-11. BD81A BOARD

(Page 15)

3-14. OPTICAL PICK-UP

(Page 16)

3-7. BACK PANEL SECTION,

SUB TRANS BOARD
(Page 13)

3-8. TRANS BOARD

(Page 13)

3-5. TAPE MECHANISM DECK,

MIC JACK BOARD

(Page 12)

3-12. CONNECT BOARD

(Page 15)

3-13. DRIVER BOARD,

SW BOARD
(Page 16)

3-9. MAIN BOARD

(Page 14)

3-10. AMP BOARD

(Page 14)

3-6. PANEL BOARD

(Page 12)

3-15. SENSOR BOARD

(Page 17)

3-16. MOTOR (TB) BOARD

(Page 17)

3-17. MOTOR (LD) BOARD

(Page 18)

9

HCD-RG555

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

3-1. CASE (TOP)

qf

qh

case

(top)

7

two

screws

(case 3 TP2)

qs

0

(+BVTP 3

8

screw

(case 3 TP2)

screw

case (side-L)

9

screw

(+BVTP 3

×

10)

×

qg

10)

qa

qd

two

screws

(+BVTP 3

qf

5

×

10)

6

case (side-R)

3

(+BVTP 3

1

two

(case 3 TP2)

screw

screws

×

10)

3-2. CD DOOR

CD mechanism deck (CDM74)

1

Turn the pulley to the direction of the arrow.

pulley

Front panel side

2

Pull-out the disc tray.

3

two claws

2

(case 3 TP2)

4

CD door

4

(+BVTP 3

screw

screw

×

10)

10

3-3. FRONT PANEL SECTION

1

3

CN823

8

screw
(+BVTP 3

×

10)

qa

CN805

CN304

4

screw
(+BVTP 3

×

HCD-RG555

8)

5

screw (+BVTP 3

×

8)

9

qf

front panel section

3-4. CD MECHANISM DECK

0

2

CN302

6

three

(+BVTP 3

7

screw (+BVTP 3

qd

CN309

screws

4

CN103

×

8)

CD mechanism deck

qs

CN102

×

10)

1

three

(+BVTP 3

screws

×

10)

MAIN board

MAIN board

3

CN874

2

CN701

11

HCD-RG555

)

)

3-5. TAPE MECHANISM DECK, MIC JACK BOARD

1

connector

jack bracket

3

tape mechanism deck

2

seven

(+BVTP 2.6

screws

×

8

6

MIC JACK board

3-6. PANEL BOARD

4

seven

claws

5

two

(+BVTP 3

6

screws

CN604

×

4

10)

two

screws

(+BVTP 2.6

×

8)

2

eight

screws

(+BVTP 2.6

×

8

12

7

PANEL board

5

CN605

1

connector

3

two

(+BVTP 2.6

screws

×

8)

3-7. BACK PANEL SECTION, SUB TRANS BOARD

0

SUB TRANS board

3

4

CN101

2

9

CN906

1

two

screws

(+BVTP 3

CN904

×

10)

CN901

8

5

CN308

qa

back panel section

7

6

two

(+BVTP 3

HCD-RG555

three

screws

screws

×

×

10)

(+BVTP 3

10)

3-8. TRANS BOARD

1

6

TRANS board

CN905

2

4

earth wire

CN907

5

four

screws

(+ITC 4

× 8

)

3

screw

(+BVIT 3

× 8R

)

13

HCD-RG555

3-9. MAIN BOARD

1

CN907

4

MAIN board

MAIN board

3-10. AMP BOARD

4

6

two

(transistor)

5

screw
(+BVIT 3

screw
(+BVIT 3

screws

× 8R

× 8R

3

CN441

2

two

screws

×

7

8)

2

two

screws

×

(+BVTT 4

8

8)

heat sink

(+BVTP 3

3

screw

)

)

(+BVTP 3

×

14)

14

1

9

AMP

CN905

board

3-11. BD81A BOARD

5

Remove soldering from the four points.

1

CN202

3

screw
(+BVTP 2.6

6

BD81A

4

gap tube

× 8

board

2

CN101

HCD-RG555

)

3-12. CONNECT BOARD

2

two

(+BVTP 2.6

3

CONNECT

screws

board

× 8

1

CN871

)

15

HCD-RG555

)

3-13. DRIVER BOARD, SW BOARD

1

two

screws

(+BTTP (M2.6))

4

DRIVER

2

board

CN702

3

CN703

5

screw
(+BTTP (M2.6))

6

SW board

3-14. OPTICAL PICK-UP

2

h

older (213) ASSY

qd

optical pick-up

(KSM-215DCP/C2NP)

qa

two

insulators

0

two

coil springs

(insulator)

9

t

wo stoppers (BU)

8

t

wo screws

(BVTT M2.6)

qs

7

6

(insulator)

4

(BVTT M2.6)

3

floating

(+PTPWH M2.6)

screw

floating

1

(+PTPWH M2.6

two

two

5

stopper (BU)

screw

screw

insulators

coil springs

16

3-15. SENSOR BOARD

2

t

ray

1

floating

(+PTPWH M2.6)

6

floating

(+PTPWH M2.6)

7

g

screw

8

(+BTTP (M2.6))

screw

ear (geneva)

s

crew

0

SENSOR board

9

CN731

3

b

elt (table)

4

floating

(+PTPWH M2.6)

5

screw

p

ulley (table)

HCD-RG555

3-16. MOTOR (TB) BOARD

2

stopper

4

stopper

1

7

t

able motor assy (M741)

3

CN742

8

MOTOR (TB) board

6

Remove the two solderings of motor.

5

two

screws

(+BTTP (M2.6))

17

HCD-RG555

3-17. MOTOR (LD) BOARD

4

Remove the two solderings of motor.

5

l

oading motor assy (M751)

2

two

screws

(+BTTP (M2.6))

3

MOTOR (LD) board

1

b

elt (loading)

18

SECTION 4

TEST MODE

HCD-RG555

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

•A step of AM channels can be changed o ver between 9 kHz and
10 kHz.

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 , PLAY MODE/TUNING MODE ,

and DISC 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 , PLAY MODE/TUNING MODE ,

and 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 pick-up accesses to the first track, and plays 3 seconds.
(4) The pick-up 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.

19

HCD-RG555

[P ANEL T est 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 , PLAY
MODE/TUNING MODE and ENTER simultaneously.

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

4. Press X and ENTER buttons simultaneously, and the key
check mode is activated.

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

6. Press X and ENTER buttons simultaneously, and the key
count mode is activated.

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

8. Press X and ENTER 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 X and ENTER buttons simultaneously, and the volume
control detect mode is activated.

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

12. T o exit from the GC test mode after the head phone detect mode,
press X and ENTER buttons simultaneously.

[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 , PLAY
MODE/TUNING MODE and DISC 2 simultaneously.

3. The destination is displayed.

4. Press DISPLAY 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 pick-up.

Procedure:

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

2. Select the function “CD”.

3. T o enter the test mode, press three b uttons x , PLAY MODE/
TUNING MODE , and Z simultaneously.

4. The CD service mode is selected.

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

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

1) Move the pick-up to the most inside track.

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

Note: • Always move the pick-up to most inside tr ack when exiting from

this mode. Otherwise, a disc will not be unloaded.

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

button to move the

[MC T est 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 , PLAY
MODE/TUNING MODE and DISC 3 simultaneously.

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

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

5. Press the PRESET EQ button.
The function of the equalizer is set to “EQ FLAT”.

6. MASTER VOLUME up and down.
“VOLUME MIN” “VOLUME 16” “VOLUME MAX” is
displayed.

7. Press the GROOVE button.
The message “VACS OFF” or “VACS ON” is displayed.

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

[CD Ship Mode (LOCK) ]

•This mode moves the pick-up 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.

[CD Ship (LOCK) & COLD RESET MODE]

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 three buttons x , CD and DISPLAY simultaneously.

5. The “STANDBY” display blinks instantaneously and CD ship

mode is set.

6. To fluorescent indicator tube displays “COLD RESET” and

the set is reset.

[Disc Tray Lock]

Procedure:

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

2. Press two buttons of x and Z simultaneously for five seconds.

3. The message “LOCKED” is displayed and the tray is locked.

(Even if exiting from this mode, the tray is still locked.)

4. Press two buttons of x and Z simultaneously for five seconds

again.

5. The message “UNLOCKED” is displayed and the tray is

unlocked.

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

OFF.

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[CD Repeat 5 Times Limit Release Mode]

Procedure:

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

2. Select the function “CD”.

3. Press three buttons x , CD and ENTER simultaneously.

4. The message “LIMIT OFF” is displayed.

5. Press ?/1 button the set OFF.

[AMP TEST MODE]

Procedure:

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

2. To enter the test mode, press three buttons x , PLAY
MODE/TUNING MODE and ENTER simultaneously.

3. Press the DISPLAY button.
The message “V0 0 0” “ 000” is displayed.

4. Press the GROOVE button.
The message “DBFB ON” “DBFB OFF” is displayed.

5. Press the SURROUND button.
The message “SURROUND ON” “SURROUND OFF” is
displayed.

6. Press the EQ BAND button.
The message “LOW” “MID” “HIGH” is displayed.

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

HCD-RG555

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