SONY HCD-RG221 Service Manual

HCD-RG221

Amplifier section

The following measured at AC 120, 127, 220 , 240 V
50/60 Hz
DIN power output (rated): 100 + 100 watts (6 ohms at

1kHz, DIN)

Continuous RMS power output (referen ce) :

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

CD player section

System Compact disc and dig ital

audio system

Laser Semiconductor laser

(λ=780 nm)
Emission duration:
continuous

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),

using Sony TYPE I
cassettes

Tuner section

FM stereo, FM/AM super he te rodyne 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

530 – 1,710 kHz
(with the tuning interv al
set at 10 kHz)
531 – 1,602 kHz
(with the tuning interv al

set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz

General

Power requirements
Argentine models: 220 V AC, 50/60 Hz
Mexican models:
Other models:

127 V AC, 60 Hz

120 V, 220 V or

230 – 240 V AC, 50/60 Hz

Adjustable with voltage selector

Power consumption

180 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.

SERVICE MANUAL

Ver 1.0 2004.04

• HCD-RG221 is the tuner, deck, CD and
amplifier section in MHC-RG221.

CD
Section

Tape deck Model Name Using Similar Mechanism New
Section T ape Transport Mechanism T ype CWM43FF-05

E Model

Model Name Using Similar Mechanism New
CD Mechanism Type CDM74-F1BD81
Optical Pick-up Name

KSM-215DCP/C2NP

9-877-659-01

2004D1678-1
 2004.04

Sony Corporation

Home Audio Company
Published by Sony Engineering Corporation

SPECIFICATIONS

MINI HI-FI COMPONENT SYSTEM

HCD-RG221

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.

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.

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. To 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.

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.

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

HCD-RG221

MODEL IDENTIFICATION
– Back Panel –

Part No.

Model Name Part No.

Argentina model 4-254-506-0[]
Chilean and Peruvian models 4-254-507-0[]
Mexican model 4-254-509-0[]
120V AC Area in E model 4-254-799-0[]

TABLE OF CONTENTS

1. SERVICING NOTE··························································4

2. GENERAL ·········································································· 5

3. DISASSEMBLY

3-1. Cover (Top) ····································································· 8
3-2. CD Door·········································································· 8
3-3. Front Panel Section ························································· 9
3-4. CD Mechanism Deck (CDM74-F1BD81) ······················ 9
3-5. Tape Mechanism Deck, GAME JACK Board··············· 10
3-6. PANEL Board ······························································· 10
3-7. BACK PANEL Section, SUB-TRANS Board ·············· 11
3-8. Power Transformer······················································· 11
3-9. MAIN Board ································································· 12
3-10. AMP Board ································································· 12
3-11. BD81A Board ····························································· 13
3-12. CONNECT Board······················································· 13
3-13. DRIVER Board, SW Board ········································ 14
3-14. Optical Pick-up (KSM-215DCP/C2NP) ····················· 14
3-15. SENSOR Board ·························································· 15
3-16. MOTOR (TB) Board··················································· 15
3-17. MOTOR (LD) Board ·················································· 16

4. TEST MODE ···································································· 17

5. DIAGRAMS

5-1. Block Diagrams – PANEL Section – ···························· 22

– MAIN Section – ······················································· 23

– BD/DRIVER Section – ············································ 24
5-2. Printed Wiring Board – BD81A Section –···················· 25
5-3. Schematic Diagram – BD81A Section – ······················ 26
5-4. Printed Wiring Board – CD MECHANISM Section –· 27
5-5. Schematic Diagram – CD MECHANISM Section –···· 28
5-6. Printed Wiring Board – MAIN Section – ····················· 29
5-7. Schematic Diagram – MAIN Section (1/2) – ··············· 30
5-8. Schematic Diagram – MAIN Section (2/2) – ··············· 31
5-9. Printed Wiring Board – PANEL COMB Section –······· 32
5-10. Schematic Diagram – PANEL COMB Section – ······· 33
5-11. Printed Wiring Board – PANEL Section –·················· 34
5-12. Schematic Diagram – PANEL Section (1/2) – ··········· 35
5-13. Schematic Diagram – PANEL Section (2/2) – ··········· 36
5-14. Printed Wiring Board – TRANS Section – ················· 37
5-15. Printed Wiring Board – AMP Section –······················ 38
5-16. Schematic Diagram – AMP POWER Section – ········· 39
5-17. IC Pin Function Description ······································· 42

6. EXPLODED VIEWS

6-1. MAIN Section······························································· 47
6-2. Front Panel Section ······················································· 48
6-3. MAIN Board Section ···················································· 49
6-4. CD Mechanism Deck Section -1 (CDM74-F1BD81)··· 50
6-4. CD Mechanism Deck Section -2 (CDM74-F1BD81)··· 51

7. ELECTRICAL PARTS LIST ······································· 52

3

HCD-RG221

d

k

• 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

• 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

4

SECTION 2

Illustrati

GENERAL

List of button locations and reference pages

HCD-RG221

This section is extracted
from instruction manual.

How to use this page

Use this page to find the locatio n of buttons and other
parts of the sys tem that are men tioned in the text.

Main unit

ALPHABETICAL ORDER

A – O P – Z

ALBUM+ qh (12 , 14, 19 )
ALBUM− wg (12 , 14, 19 )

CD eg (9, 11, 14, 19, 20)
CD SYNC wj (19)
Deck A wk (18)
Deck B qj (18, 19, 20, 24)
DISC 1 – 3 q; (12, 14, 35)
DISC SKIP/EX-CHANGE qs

(11, 12, 14, 19)
Disc tray 9 (11)
DISPLAY 2 (17, 27, 28)
Display window 5
EFFECT ON/OFF 8 (22)
ENTER qa (14, 15 , 22)
EQ BAND 7 (22)
GAME es (20, 23, 30)
GAME INPUT AUDIO L/R jacks

wd (20, 29)
GAME INPUT VIDEO jack wf

(29)
GAME MIXING wh (23)
GROOVE 8 (21)
Operation Dial

(– EQ +/l L) 6 (12,

14, 19, 22)

P FILE qd (22)
PHONES jack ql
PLAY MODE wl (12, 14, 18, 19,

20, 35)
PRESET EQ qd (22)
REC PAUSE/START wj (19, 20,

23, 24)
Remote sensor 4
SURROUND 8 (23)
TAPE A/B ed (18, 19, 20, 24)
TUNER/BAND ef (15, 16, 20)
TUNING MODE wl (15, 16, 35)
TUNING + qh (15, 16)
TUNING – wg (15, 16)

VOLUME control w; (21)

12 45 6 78 9

eg
ef
ed
es

e;
wl
wk
wj

on number

r

TAPE A/B ed (18, 19, 20, 24)

Name of button/pa r t Reference page

RR

BUTTON DESCRIPTIONS

?/1 (power) 1 (8, 16, 27, 30, 33,

35)

X (pause) wg (12, 19)
Z (eject) qf (11)
PUSH Z (deck B) (eject) qg (18)
x (stop) wg (12, 19, 24, 35)
M (fast forward) qh (12, 19)
H (play) qh (12, 18, 19)
m (rewind) wg (12, 19)
Z PUSH (deck A) (eject) e; (18)

q;

qa

j

ALBUM

S

s

TUNING TUNING

J

ALBUM

H

h

qs
qd
qf
qg
qh
qj
qk

ql

wh

wd

wfwg

w;

5

HCD-RG221

Remote control

ALPHABETICAL ORDER

A – E

ALBUM+ qd (12 , 14)
ALBUM− qa (12 , 14)

CD qk (11, 14)
CLEAR qg (14)
CLOCK/TIMER SELECT 2

(26, 27)

CLOCK/TIMER SET 3 (10, 25,

26)
DISC SKIP q; (12, 14)
DISPLAY wa (17, 27, 28)
ENTER 9 (10, 14, 15, 25, 26 )
EQ qf (22)

F – Z

FM MODE 4 (17)
FUNCTION 6 (11, 14, 15, 16)
PLAY MODE w; (12, 14, 18)
REPEAT 4 (13)
SLEEP ws (25)
TAPE qj
TUNER BAND 5 (15, 16)
TUNER MEMORY ql (15)
TUNING MODE w; (15, 16)
VOLUME +/– qs (21, 25)

ws
wa
w;
ql
qk
qj

qh

BUTTON DESCRIPTIONS

?/1 (power) 1 (8, 26)
m/M (rewind/fast forward)

7 (12, 19)
–/+ (tuning) qh (15)
./> (go back/go forward)

qh (10, 12, 19)

N (play) 8 (12, 18)
X (pause) 8 (12, 19)
x (stop) 8 (12, 19)

1
2
3
4
5
6

7

Setting the clock

Use buttons on the remote for th e operation.

1

Press ?/1 to turn on the system.

2

Press CLOCK/TIMER SET.

3

Press . or > repeatedly to set the
hour.

4

Press ENTER.

5

Press . or > repeatedly to set the
minute.

6

Press ENTER.

The clock starts wo rking.

To adjust the clock

1

Press CLOCK/TIMER SE T.

2

Press . or > repeatedly to select
“CLOCK SET”, then press ENTER.

3

Do the same procedures as step 3 to 6
above.

Notes

The clock settings are canceled when you disconnect

the power cord or if a power failure occurs.

qg
qf

qd

8

9
q;

qa
qs

6

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

SET

3-1.COVER (TOP)

(Page 8)

3-2.CD DOOR

(Page 8)

HCD-RG221

SECTION 3

DISASSEMBLY

3-3.FRONT PANEL SECTION

(Page 9)

3-4.CD MECHANISM DECK

(CDM74-F1BD81)

(Page 9)

3-11.BD81A BOARD

(Page 13)

3-7.BACK PANEL SECTION,

SUB-TRANS BOARD

(Page 11)

3-8.POWER TRANSFORMER

(Page 11)

3-5.TAPE MECHANISM DECK,

GAME JACK BOARD

(Page 10)

3-12.CONNECT BOARD

(Page 13)

3-13.DRIVER BOARD,

SW BOARD

(Page 14)

3-9.MAIN BOARD

(Page 12)

3-6.PANEL BOARD

(Page 10)

3-14.OPTICAL PICK-UP

(KSM-215DCP/C2NP)

(Page 14)

3-15.SENSOR BOARD

(Page 15)

3-16.MOTOR (TB) BOARD

(Page 15)

3-17.MOTOR (LD) BOARD

(Page 16)

3-10.AMP BOARD

(Page 12)

7

HCD-RG221

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

3-1. COVER (TOP)

6

two screws (Case 3 TP2)

9

(+BVTP 3

7

screw (case 3 TP2)

cover

screw

(Side-L)

× 10

)

cover

qf

8

screw

(+BVTP 3

(top)

qs

× 10

q;

qa

two

screws (+BVTP 3

qs

)

qd

5

cover

×

10)

(Side-R)

3

(+BVTP 3

1

two screws

(case 3 TP2)

screw

× 10

)

3-2. CD DOOR

CD mechanism deck (CDM74B)

1

Turn the pulley to the direction of arrow.

pulley

Front panel side

2

Pull-out the disc tray.

3

two claws

4

CD door

4

(+BVTP 3

2

screw (Case 3 TP2)

screw

× 10

)

8

3-3. FRONT PANEL SECTION

)

0

connector 3p (CN314C)

8

wire (flat type) 7 core (CN253)

6

connector 2p (CN805)

3

screw (+BVTP 3

×

10)

4

screw (+BVTP 3

× 8

HCD-RG221

)

5

screw (+BVTP 3

× 8

)

qd

front panel section

3-4. CD MECHANISM DECK (CDM74-F1BD81)

4

CD mechanism deck (CDM74-F1BD81)

2

screw (+BVTP 3

qs

connector 8p (CN103)

9

connector 5p (CN309)

7

wire (flat type) 31 core (CN302)

1

three screws (+BVTP 3

qa

connector 3p (CN112)

× 8

)

1

three

×

10)

screws (+BVTP 3

×

10

3

connector 9p (CN254)

2

connector 12p (CN701)

9

HCD-RG221

)

)

3-5. TAPE MECHANISM DECK, GAME JACK BOARD

1

wire (flat type) 13 core (CN602)

2

five

screws

(+BVTP 2.6

×

8

3-6. PANEL BOARD

2

seven

claws

5

GAME JACK board

4

two

screws

(+BVTP 2.6

4

connector 6p (CN604)

×

8)

3

tape mechanism deck

5

PANEL board

10

3

wire (flat type) 13 core (CN602)

1

ten

screws

(+BVTP 2.6

×

8

3-7. BACK PANEL SECTION, SUB-TRANS BOARD

)

r

8

connector

2p (CN901)

2

connector

2p (CN906)

9

SUB-TRANS board

7

two

screws

(+BVTP 3

1

connector

2p (CN904)

× 10

)

4

connector

3p (CN308)

q;

back panel section

5

(+BVTP 3

two

screws

HCD-RG221

×

10)

6

two

screws

(+BVTP 3

×

10

3-8. POWER TRANSFORMER

1

connector

3p (CN905)

2

connector

10p (CN907)

3

wire (flat type)

15 core (CN101)

5

four

(+ITC 4

screws

× 8

)

6

power transforme

3

screw

(+BVIT 3

×

8R)

4

earth wire

11

HCD-RG221

d

)

3-9. MAIN BOARD

1

connector

10p (CN907)

4

MAIN

MAIN board

boar

3-10. AMP BOARD

3

two

screws

(+BVIT 3

4

two

screws

(transistor)

× 8R

6

)

AMP

2

screw

(+BVTP 3

board

×

14)

3

connector

13p (CN441)

2

two

screws

(+BVTP 3

× 8

)

1

two

screws

(+BVTT 4

5

heat sink

× 8

12

3-11. BD81A BOARD

)

4

Remove soldering from the four points.

1

wire (flat type) 17 core (CN201)

3

screw

(+BVTP 2.6

5

BD81A

board

HCD-RG221

× 8

)

2

wire (flat type) 16 core (CN101

3-12. CONNECT BOARD

2

two

(+BVTP 2.6

3

CONNECT

screws

board

1

wire (flat type) 17 core (CN201)

× 8

)

13

HCD-RG221

3-13. DRIVER BOARD, SW BOARD

1

two

(+BTTP (M2.6))

4

DRIVER

2

wire (flat type) 5p (CN702)

screws

board

3

connector

4p (CN703)

5

screw

(+BTTP (M2.6))

6

SW board

3-14. OPTICAL PICK-UP (KSM-215DCP/C2NP)

2

h

older (213) ASSY

qh

optical pick-up

(KSM-215DCP/C2NP)

0

two

insulators

9

two

coil springs

(insulator)

8

t

wo stoppers (BU)

7

t

wo screws

(BVTT M2.6)

qa

1

floating

(+PTPWH M2.6)

6

two

insulators

5

two

(insulator)

3

screw

(BVTT M2.6)

4

floating

(+PTPWH M2.6)

qf

CN101 (flat type)

qg

B

D81A board

screw

coil springs

screw

14

qd

Remove the four solderings of motor.

qs

s

crew (+BVTP 2.6x 8)

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

connector

(

CN731)

3

b

elt (table)

4

foating

(+PTPWH M2.6)

5

screw

p

ulley (table)

HCD-RG221

3-16. MOTOR (TB) BOARD

2

stopper

4

1

stopper

5

t

able motor assy (M741)

3

wire (flat type) 5 core (CN742)

7

MOTOR (TB) board

6

Remove the two solderings of motor.

5

two

screws

(+BTTP (M2.6))

15

HCD-RG221

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)

16

SECTION 4

TEST MODE

HCD-RG221

[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 ag ining 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 occurr ed, 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.

17

HCD-RG221

[P ANEL 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 , 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 DO WN” is displayed if rotating
counterclockwise.

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

4. The CD service mode is selected.

5. With the CD in stop status, press M button to move the
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 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.

[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 , 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 “ST ANDBY” display blinks instantaneously and CD ship

mode is set.

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

the set is reset.

[Disc T ray Lock]

Procedure:

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

2. Press two buttons of x and Z simultaneously for fi ve 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 fiv e 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.

18

[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-RG221

19

HCD-RG221

MEMO

20