Sony HCD-GN999D Service manual

HCD-GN999D

SERVICE MANUAL

Ver.1.0 2006.06

• HCD-GN999D is the Amplifier,
DVD player, tape deck and tuner
section in MHC-GN999D/GN999DS.

DVD

Section

TAPE Model Name Using Similar Mechanism NEW

Section Tape Transport Mechanism Type CWN42FR602

Model Name Using Similar Mechanism HCD-GNV99D

DVD Mechanism Type CDM74HF-DVBU101

Optical Pick-up Name KHM-310CAB/C2NP

E Model

SPECIFICATIONS

Amplifier section

The following are measured at AC 120, 127, 220,
240V, 50/60 Hz
DIN power output (rated) 135 W + 135 W

(6 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 160 W + 160 W

(6 ohms at 1 kHz, 10% THD)
Center speaker: 50 W

(16 ohms at 1 kHz, 10% THD)
Surround speaker: 50 W + 50 W

(16 ohms at 1 kHz, 10% THD)
Subwoofer: 160 W (6 ohms at 100 Hz, 10% THD)
Inputs
VIDEO INPUT (phono jacks) VIDEO: 1 Vp-p, 75 ohms

AUDIO L/R: Voltage 250 mV,

impedance 47 kilohms
TV/SAT AUDIO IN L/R (phono jacks)

Voltage 250 mV/450 mV,

impedance 47 kilohms

MIC 1/MIC 2
(phone jack):

Sensitivity 1 mV,

impedance 10 kilohms
Outputs
VIDEO OUT (phono jack): Max. output level 1 Vp-p,

unbalanced, Sync.

negative load impedance

75 ohms
COMPONENT VIDEO OUT Y: 1 Vp-p, 75 ohms

PB/CB: 0.7 Vp-p, 75 ohms

PR/CR: 0.7 Vp-p, 75 ohms

S VIDEO OUT (4-pin/mini-DIN jack)

Y: 1 Vp-p, unbalanced,
Sync. negative
C: 0.286 Vp-p, load
impedance 75 ohms

PHONES (stereo mini jack): Accepts headphones of

8 ohms or more
FRONT SPEAKER: Use only the supplied speakers
SURROUND SPEAKER Use only the supplied speakers
CENTER SPEAKER Use only the supplied speakers
SUB WOOFER Use only the supplied subwoofer

Disc player section

System Compact disc and digital audio and

video system
Laser Semiconductor laser

(DVD: λ = 650 nm, CD: λ = 790 nm)

Emission duration: continuous
Frequency response DVD (PCM 48 kHz):

2 Hz – 22 kHz (±1dB)

CD: 2 Hz – 20 kHz (±0.5 dB)
Video color system format
Latin American models: NTSC
Other models: NTSC and PAL

Tape deck section

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

using Sony TYPE I tape

– Continued on next page –

MINI HI-FI COMPONENT SYSTEM

9-887-269-01

2006F02-1
© 2006.06

Sony Corporation

Home Audio Division
Published by Sony Techno Create Corporation

HCD-GN999D

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
Latin American models: 530 – 1,710 kHz

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

Saudi Arabian and Russian models:

531– 1,602 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

General

Power requirements
Mexican model: 127 V AC, 60 Hz
Saudi Arabian model: 120 – 127 V, 120 – 220 V or 220 –

240 V AC, 50/60 Hz

Adjustable with voltage selector
Thai model: 220 V AC, 50/60 Hz
Other models: 120 V or 220 – 240 V AC, 50/60 Hz

Adjustable with voltage selector
Power consumption 160 W
Dimensions (w/h/d) (Approx.) 280 × 326 x 385.5 mm
Mass (Approx.) 6.5 kg

Design and specifications are subject to change without notice.

Self-diagnosis Function

(When letters/numbers appear in the
display)

When the self-diagnosis function is activated to
prevent the system from malfunctioning, a
5-character service number (e.g. C 13 50) with a
combination of a letter and 4 digits appears on
the TV screen and the front panel display. In this
case, check the following table.

First 3
characters of
the service
number

C 13 This disc is dirty.

C 31 The disc is not inserted correctly.

E XX
(XX is a
number)

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)

Cause and corrective action

Clean the disc with a soft cloth

Restart the system, then re-insert

the disc correctly.

To prevent a malfunction, the system
has performed the self-diagnosis
function.

Contact your nearest Sony dealer or

local authorized Sony service
facility and give the 5-character
service number.
Example: E 61 10

.

: 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 viscou-s (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.

2

TABLE OF CONTENTS

HCD-GN999D

1. SERVICING NOTES ................................................ 4

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

3. DISASSEMBLY

3-1. Disassembly Flow ........................................................... 7

3-2. Cabinet Steel case............................................................ 8

3-3. Loading Panel.................................................................. 8

3-4. Tuner Pack ....................................................................... 9

3-5. Back Panel, DC Fan (M891) ........................................... 9

3-6. DVD Mechanism Deck ................................................... 10

3-7. KARAOKE Board, VIDEO Board, DMB15 Board ........ 10

3-8. Front Panel Assy.............................................................. 11

3-9. Tape Mechanism Deck, MIC Board ................................ 11

3-10. PANEL Board, IR Board, VOL Board ............................ 12

3-11. MAIN Board, ADC Board ............................................... 12

3-12. POWER Board ................................................................ 13

3-13. SPEAKER Board, SMASTER Board ............................. 13

3-14. DRIVER Board, SW Board ............................................. 14

3-15. DVD Assy ........................................................................ 14

3-16. Optical pick-up ................................................................ 15

3-17. SENSOR Board ............................................................... 15

3-18. MOTOR (TB) Board ....................................................... 16

3-19. MOTOR (LD) Board ....................................................... 16

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

5. MECHANICAL ADJUSTMENTS ......................... 21

6. ELECTRICAL ADJUSTMENTS .......................... 22

7. DIAGRAMS .......................................................... 25

7-1. Block Diagram – RF Section – ....................................... 27

7-2. Block Diagram – Video Section – ................................... 28

7-3. Block Diagram – Tape/Tuner Section – .......................... 29

7-4. Block Diagram – Main Section – .................................... 30

7-5. Block Diagram – AMP Section – .................................... 31

7-6. Block Diagram – Display/Power Section – ..................... 32

7-7. Printed Wiring Board – DMB15 Board (Side A) – ......... 33

7-8. Printed Wiring Board – DMB15 Board (Side B) – ........ 34

7-9. Schematic Diagram – DMB15 Board (1/4) – ................ 35

7-10. Schematic Diagram – DMB15 Board (2/4) – ................ 36

7-11. Schematic Diagram – DMB15 Board (3/4) – ................ 37

7-12. Schematic Diagram – DMB15 Board (4/4) – ................ 38

7-13. Printed Wiring Boards – CD Mechanism Section – ....... 39

7-14. Schematic Diagram – CD Mechanism Section – .......... 40

7-15. Printed Wiring Board – MAIN Board – .......................... 41

7-16. Schematic Diagram – MAIN Board (1/3) – ................... 42

7-17. Schematic Diagram – MAIN Board (2/3) – ................... 43

7-18. Schematic Diagram – MAIN Board (3/3) – ................... 44

7-19. Printed Wiring Board – Panel Section –.......................... 45

7-20. Schematic Diagram – Panel Section – ........................... 46

7-21. Printed Wiring Boards – MIC, VOL

And SPEAKER Boards – ................................................ 47

7-22. Schematic Diagram – MIC, VOL

And SPEAKER Boards – ................................................ 48

7-23. Printed Wiring Board – ADC Board – ............................. 49

7-24. Schematic Diagram – ADC Board – .............................. 50

7-25. Printed Wiring Board – SMASTER Board (Side A) – .... 51

7-26. Printed Wiring Board – SMASTER Board (Side B) – .... 52

7-27. Schematic Diagram – SMASTER Board (1/3) – ........... 53

7-28. Schematic Diagram – SMASTER Board (2/3) – ........... 54

7-29. Schematic Diagram – SMASTER Board (3/3) – ........... 55

7-30. Printed Wiring Board – VIDEO Board – ........................ 56

7-31. Schematic Diagram – VIDEO Board – .......................... 57

7-32. Printed Wiring Boards – POWER Board – ..................... 58

7-33. Schematic Diagram – POWER Board – ......................... 59

7-34. Printed Wiring Board – KARAOKE Board – ................. 60

7-35. Schematic Diagram – KARAOKE Board – ................... 61

7-36. IC Pin Function Description ............................................ 63

8. EXPLODED VIEWS

8-1. Case, Back Panel Section ................................................ 73

8-2. Front Panel Section ......................................................... 74

8-3. Chassis Section ................................................................ 75

8-4. DVD Mechanism Section-1 (CDM74HF-DVBU101) .... 76

8-5. DVD Mechanism Section-2 (CDM74HF-DVBU101) .... 77

9. ELECTRICAL PARTS LIST ....................... 78

3

HCD-GN999D

SECTION 1

SERVICING NOTES

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 waveform is output several times.

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.
This label is located on the rear
exterior.

• MODEL IDENTIFICATION
– Back Panel –

PAR T No.

MODEL PART No.

E3, E15 models 2-658-971-0[]
E2 model 2-658-971-1[]
EA model 2-658-971-2[]
MY,SP models 2-658-971-3[]
E12 model 2-658-971-4[]
E13 model 2-658-971-5[]
PH model 2-658-971-6[]
MX model 2-658-971-7[]
E51 model 2-658-971-8[]
TH model 2-658-971-9[]

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.

NOTE ON REPLACEMENT OF DMB15 BOARD

New part of EEPROM (IC103) on the DMB15 board cannot be
used. Therefore, if the mounted DMB15 board (A-1167-802-A or
A-1167-915-A or A-1188-872-A) is replaced, exchange new
EEPROM with that used before the replacement.

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.

• Abbreviation
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E12 : 220V-240V AC Area in E model
E13 : 220V-230V AC area in E model
E15 : Iran model
E51 : Chilean and Perurian model
EA : Saudi Arabia model
MX : Mexican model
MY : Malaysia model
PH : Philippines model
SP : Singapore model
TH : Thai model

4

LOCATING THE CONTROLS

SECTION 2

GENERAL

HCD-GN999D

This section is extracted
from instruction manual.

ALPHABETICAL ORDER

A - D

CD SYNC 8
Deck A wk
Deck B qj
DIRECTION ea
DISC 1 ~ 3 q;
DISC SKIP/EX-CHANGE qa

Disc tray 7
DISPLAY r;
Display 4
DVD eh

E - O

ECHO LEVEL ws
EQ BAND/MEMORY 3
GROOVE qk
ILLUMINATION el
IR Receptor 2
MASTER VOLUME ql
MIC 1 (jack) wh
MIC 2 (jack) wg
MIC 1 LEVEL wf
MIC 2 LEVEL wd

Top view

P - Z

PHONES (jack) w;
Power illuminator wj
PRESET EQ wl
REC PAUSE/START 6
SOUND FIELD 5
SUB WOOFER ON/OFF ej
TAPE A/B ef
Tape lid qj wk
TUNER/BAND eg
TUNING +/– qh
TV/SAT ed
VIDEO es
VIDEO INPUT (jacks) wa

SYMBOLS

?/1 (on/standby) ek
Z OPEN/CLOSE 9
nN (play) qs

. OPERATION DIAL >

(go backward/forward) 1

mM (rewind/fast forward)

qh

qh

X (pause) qd
x (stop) qf

Z PUSH (Eject A) e;
Z PUSH (Eject B) qg

Front vi ew

r;
el
ek

ej
eh
eg

ef
ed
es

ea
e;

wl
wk

wj

34 5 6

2

1

7
8
9

q;
qa
qs

qd
qf

qg
qh

qj
qk

ql
w;

wh

wg

wf

wd

ws

wa

5

HCD-GN999D

Remote control

ALPHABETICAL ORDER

A - L

ADVANCE wf
ALBUM +/– qa
ANGLE q;
AUDIO 8
CLEAR wk
DISC SKIP 3
DISPLAY ed
ENTER wh
FM MODE 7
FUNCTION +/– 4
KARAOKE MODE ea
KARAOKE PON e;
KEY CONTROL #/2 es

M - S

MENU qs
Numeric Buttons
PICTURE NAVI 6
PRESET + qh
PRESET – wd
REPEAT 7
REPLAY wf
SCORE 5
SLEEP eg
SLOW qj
SLOW ws
SOUND FIELD 5qd
STEP C wf
SUBTITLE 9

T - Z

THEATRE SYNC 1
TIMER MENU eh
TIME/TEXT ef
TOP MENU wj
TUNING + qj
TUNING – ws
TV2) w;
TV CH +
TV CH –2) wd
TV/VIDEO
TV VOL +/–
TV &/1 (on/standby)2) 2
VOLUME +/–

1)2)

wl

2)

qh

2)

eg

1)2)

qf

1)

qf

NUMBERS AND SYMBOLS

?/1 (on/standby) 2
x (stop) qk

X (pause) ql

1)

(play) wa

H
> (go forward) qh
. (go backward) wd
M (fast forward) qj
m (rewind) ws

V/v/B/b

10/0

-/--

O RETURN wg

c STEP wf

1)

2)

wh

2)

wl

2)

wk

DISPLAY qg

The numeric button 5, TV VOL +, VOLUME + and
H buttons have a tactile dot. Use the tactile dot as
a reference when operating the system.

This button is used to operate a Sony TV. For
details, see “Operating a Sony TV with the remote”
on page 17.

eh

eg

ef

ed

es

ea

e;

wl

wk

wj

wh

wg

wf

wd

ws

wa

w;

1

2

3

4

5

6

7

8

9

q;

qa

qs

qd

qf

qg

qh

qj

qk

ql

Setting the clock

1

Press ?/1 to turn on the system.

2

Press TIMER MENU.

The hour indication flashes in the display.

3

Press V or v repeatedly to set the
hour.

4

Press ENTER.

The minute indication flashes in the
display.

5

Press V or v repeatedly to set the
minute.

6

Press ENTER.

The clock starts functioning.

To adjust the clock

1

Press TIMER MENU.

“PLAY SET” flashes in the display.

2

Press V or v repeatedly to select "CLOCK
SET", then press ENTER.

The hour indication flashes in the display.

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.

You cannot set the clock in Power Saving Mode

.

6

• This set can be disassembled in the order shown below.

3-1. DISASSEMBLY FLOW

SET

HCD-GN999D

SECTION 3

DISASSEMBLY

3-2. CABINET STEEL CASE

(Page 8)

3-3. LOADING PANEL

(Page 8)

3-4. TUNER PACK

(Page 9)

3-5. BACK PANEL,
DC FAN (M891)

(Page 9)

3-6. DVD MECHANISM DECK

(Page 10)

3-7. KARAOKE BOARD,

VIDEO BOARD,

DMB15 BOARD,

(Page 10)

3-8. FRONT PANEL ASSY

(Page 11)

3-11. MAIN BOARD,

ADC BOARD

(Page 12)

3-14. DRIVER BOARD,

SW BOARD

(Page 14)

3-9. TAPE MECHANISM DECK,

MIC BOARD

(Page 11)

3-12. POWER BOARD

(Page 13)

3-13. SPEAKER BOARD,

SMASTER BOARD

(Page 13)

3-15. DVD ASSY

(Page 14)

3-16. OPTICAL PICK-UP

(Page 15)

3-10. PANEL BOARD,

IR BOARD,

VOL BOARD

(Page 12)

3-17. SENSOR BOARD

(Page 15)

3-18. MOTOR (TB) BOARD

(Page 16)

3-19. MOTOR (LD) BOARD

(Page 16)

7

HCD-GN999D

)

3-2. CABINET STEEL CASE

4

screw
(case 3 TP2)
(3×12)

3

screw
(case 3 TP2)
(3×8)

9

cabinet steel case

8

5

three screws

(+BVTP 3×8)

7

screw

(+BVTP 3×8)

2

(case 3 TP2)
(3×12)

6

three screws

(+BVTP 3×8

screw

3-3. LOADING PANEL

DVD mechanism deck (CDM74HF-DVBU101)

1

Turn the pulley to the arrow direction.

Pulley

Front side

3

loading panel

4

1

screw
(case 3 TP2)
(3×8)

2

Pull out disc tray.

8

3-4. TUNER PACK

)

2

wire (flat type)

(CN1)

3

tuner pack

1

two screws

(+BVTT 3×6

HCD-GN999D

3-5. BACK PANEL, DC FAN (M891)

8

back panel

6

two screws

(+BVTP 3×8)

9

connector

(CN580)

7

two screws

(+BVTP 3

1

four screws

(+BVTP 3

qa

DC fan

(M891)

×

8)

×

2

(+BVTP 3

4

(+BVTP 3×8)

5

(+BVTP 3×8)

8)

three screws

3

screw

(+BVTP 3

0

two screws

(+BVTP 3

four screws

three screws

×

8)

×

8)

×

8)

9

HCD-GN999D

)

3-6. DVD MECHANISM DECK

0

connector

(CN1967)

1

tapping screw

6

connector

(CN2000)

4

qa

DVD mechanism deck

3

wire (flat type)

(CN701)

5

connector

(CN1880)

7

wire (flat type)

(CN406)

8

wire (flat type)

(CN301)

9

wire (flat type)

(CN521)

2

tapping screw

3-7. KARAOKE BOARD, VIDEO BOARD, DMB15 BOARD

ql

cover (CDM)

qj

screw

(+BVTP 3

2

KARAOKE board

1

two screws

(+BVTP 3

qg

(+BVTP 3

qd

(+BVTP 3

9

(CN401)

×

8)

×

8)

screw

two screws

connector

7

(+BVTP 3

×

8)

×

8)

two screws

×

8)

3

(+BVTP 3

qk

(+BVTP 3

qs

two screws

(+BVTP 3

8

VIDEO board

4

screw

(+BVTP 3

5

shield plate (video)

screw

×

8)

two screws

qh

bracket mediatec

0

connector

(CN401)

qf

DMB15 board

×

×

8)

×

8)

qa

(CN201)

8)

6

wire (flat type

(CN301)

wire (flat type)

10

3-8. FRONT PANEL ASSY

r

8

front panel assy

6

connector

(CN121)

5

wire (flat type)

(CN101)

7

connector

(CN131)

4

wire (flat type)

(CN201)

3

connector

(CN205)

2

connecto

(CN503)

HCD-GN999D

1

four screws

(+BVTP 3

3-9. TAPE MECHANISM DECK, MIC BOARD

front panel

6

holder (TC-L)

5

holder (TC-R)

7

three

mic knobs

×

8)

2

tape mechanism deck

0

8

four screws

(+BVTP2.6)

9

(pivot)

qs

(TC)

1

(+BVTP2.6)

bracket

bracket

six screws

4

splring (L)

3

spring (R)

qa

three screws

(+BVTP3

qd

MIC board

×

8)

11

HCD-GN999D

r

3-10. PANEL BOARD, IR BOARD, VOL BOARD

0

four screws

(+BVTP2.6)

9

knob jog assy

8

accessory nut

6

IR board

5

PANEL board

2

qa

VOL board

4

connector

(CN1452)

1

eighteen screws

(+BVTP2.6)

3

wire (flat type)

(CN1402)

7

knob (vol)

3-11. MAIN BOARD, ADC BOARD

front panel

2

connector

(CN501)

3

(+BVTT 3

two screws

1

wire (flat type)

(CN105)

×

6)

6

connecto

(CN590)

12

8

ADC board

7

board to board connector

(CN381,CN01)

4

two screws

(+BVTP 3

5

MAIN board

×

8)

3-12. POWER BOARD

7

(+BVTP 3

qj

bracket (SMPS 5ch)

qd

two tapping screws

q;

bracket

(support front)

9

two screws

(+BVTP 3

2

(+BVTT 3

×

three screws

w;

POWER board

three screws

8)

×

6)

HCD-GN999D

8

bracket (support top)

×

8)

qh

three screws

(+BVTP 3

qs

bracket (support pwb)

ql

bracket (SMPS -B5)

qk

three screws (+BVTP 3×8)

qa

tapping screw

4

connector

(CNP1100)

qf

bracket (trans 5ch)

1

qg

screw

(+BVTP 3

×

8)

3

×

8)

screw

(+BVTT 3

×

6)

5

connector

(CN1101)

3-13. SPEAKER BOARD, SMASTER BOARD

7

heat sink (SMAS)

9

three screws

(+BVTT 3

0

SMASTER board

×

6)

6

connector

(CN1200)

6

screw

(+BVTT 3

8

two screws

(+BVTT 3

3

×

6)

×

6)

connector

(CN1700)

2

connector

(CN1700)

1

connector

(CN1700)

4

two screws

(+BVTP 3

5

SPEAKER board

×

8)

13

HCD-GN999D

3-14. DRIVER BOARD, SW BOARD

1

two

screws

(+BTTP (M2.6))

5

DRIVER

board

3

connector (CN704)

2

wire (flat type)

(CN702)

4

connector (CN703)

6

screw

(+BTTP (M2.6))

7

SW board

3-15. DVD ASSY

1

floating

(+PTPWH M2.6)

screw

2

DVD

assy

14

3-16. OPTICAL PICK-UP

w

3

insulator screw

4

8

insulator

insulator screw

9

insulator

5

optical pick-up

(KHM-310CAB/C2NP)

2

insulator screw

7

insulator

1

6

HCD-GN999D

insulator scre

insulator

3-17. 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

floating

(+PTPWH M2.6)

5

screw

p

ulley (table)

15

HCD-GN999D

3-18. MOTOR (TB) BOARD

2

stopper

table

3-19. MOTOR (LD) BOARD

2

Remove the two solderings of motor.

4

8

6

Remove the two solderings of motor.

5

two

screws

(+BTTP (M2.6))

3

two

screws

(+BTTP (M2.6))

4

1

stopper

7

t

able motor assy (M741)

wire (flat type) (CN742)

3

MOTOR (TB) board

MOTOR (LD) board

16

5

l

oading motor assy (M751)

1

b

elt (loading)

SECTION 4

TEST MODE

HCD-GN999D

[PANEL TEST MODE]

•This mode is used to check the fluorescent indicator tube, LEDs,
keys, VOLUME jog, model, destination, software version and
VACS level.

Procedure:

1. Press

2. All LEDs and segments in fluorescent indicator tube are lighted

3. When you want to enter to the software version dispaly mode,

4. Each time [DISC 1] button is pressed, the display changes from

5. When [DISC 3] button is pressed while the version numbers are

6. Press [DISC 2] button, the key check mode is activated.

7. In the key check mode, the fluorescent indicator tube displays

8. When [DISC 3] button is pressed after all LEDs and segments in

9. When [DISC SKIP/EX-CHANGE] button is pressed after all LEDs

10. To release from this mode, press three buttons in the same

x

button, [ILLUMINATION] button and [DISC 2] button

simultaneously.

up.

press [DISC 1] button. The model information appears on the
fluorescent indicator tube. Press [DISC 1] button again to view
the destination information.

MC version, SYS version, UI version, DVD version, CDMA
version, CDMB version, ST version, TA version, TM version,
TC version in this order, and returns to the model version display.

being displayed except model and destination, the date of the
software creation appears. When [DISC 3] button is pressed
again, the display returns to the software version display. When
[DISC 1] button is pressed while the date of the software creation
is being displayed, the date of the software creation is displayed
in the same order of software version display.

“K 0 V0”.
Turn the [OPERATION DIAL] clockwise; “K” value increases by
one. Turn the [OPERATION DIAL] counterclockwise; “K” value
decreases by one. Each time a button is pressed, “K” value
increases. Press other keys on main unit to check whether the
key is detected. However, once a button has been pressed, it is
no longer taken into account.
“V” value increases in the manner of 0, 1, 2, 3 ... if [VOLUME]
knob is turned clockwise, or it decreases in the manner of 0, 9,
8, 7 ... if [VOLUME] knob is turned counterclockwise.

fluorescent indicator tube light up, the fluorescent indicator tube
displays “VACS A”. A is VACS level which is triggered by signal
level.

and segments in fluorescent indicator tube light up, alternate
segments in fluorescent indicator tube would light up. If you
press [DISC SKIP/EX-CHANGE] button again, another half of
alternate segments in fluorescent indicator tube would light up.
When [DISC SKIP/EX-CHANGE] button is pressed again, all
segments lights off. Press [DISC SKIP/EX-CHANGE] button again
would cause all segments lights up.

manner as step 1, or disconnect the power cord.

• Check of Amplifier

1. Press [EQ BAND/MEMORY] button repeatedly until a message

“GEQ MAX” appears on the fluorescent indicator tube. GEQ
increases to its maximum.

2. Press [EQ BAND/MEMORY] button repeatedly until a message

“GEQ MIN” appears on the fluorescent indicator tube. GEQ
decreases to its minimum.

3. Press [EQ BAND/MEMORY] button repeatedly until a message

“GEQ FLAT” appears on the fluorescent indicator tube. GEQ
is set to flat.

4. When the [VOLUME] knob is turned clockwise even slightly,

the sound volume increases to its maximum and a message
“VOLUME MAX” appears on the fluorescent indicator tube.

5. When the [VOLUME] knob is turned counterclockwise even

slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears on the fluorescent indicator
tube.

•Tape function

1. When a tape is inserted in Deck B and recording is started, the

function is changed to TV automatically. When [CD SYNC] button
is pressed during recording in function, ALC (Automatic Level
Control) is turned on.

2. During recording, press
and the function is changed to TAPE B and rewind the tape in
Deck B until the recording start position and playback of the
tape in Deck B is started. If the [REC PAUSE/START] button is
pressed for a pause and pressed again to resume recording during
recording time, when the tape is rewind, the tape will be rewind
until the position where the pause is applied.

•To release from Common Test mode

1. To release from this mode, press

2. The cold reset is enforced at the same time.

[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

2. Press

3. The message “COLD RESET” appears on the fluorescent

[VACS ON/OFF]

• This mode is used to switch on and off the VACS (Variable

^/1

button to turn on the system.

button, [ILLUMINATION] button, and

x

simultaneously.

indicator tube. Then, the fluorescent indicator tube becomes
blank for a while, and the system is reset.

Attenuation Control System).

button will stop the recording

m

^/1

button.

^/1

button

[COMMON TEST MODE]

• This mode is used to check operations of the respective sections
of Amplifier and Tape.

Procedure:

•To enter Common Test Mode

1. Press

2. The DVD ring indicators and the line below DVD ring indicator

x

button, [ILLUMINATION] button and [DISC 3] button

simultaneously.

flash synchronously on the fluorescent indicator tube. The
function is changed to TV where the function is changed to
DVD.

Procedure:

1. Press

2. Press

[TUNER STEP CHANGE]

• The step interval of AM channels can be toggled between 9 kHz

^/1

button to turn on the system.

button, [DIRECTION] button and [DISC 1]

x

simultaneously. The message “VACS OFF” or “VACS ON”
appears on the fluorescent indicator tube.

and 10 kHz. This mode is not available for Saudi Arabia and
Russia models.

17

HCD-GN999D

Procedure:

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

2. Press [TUNER/BAND] button repeatedly to select the “AM”.

3. Press ?/1 button to turn off the system.

4. Press [ILLUMINATION] button and ?/1 button simultaneously.

The system will turn on automatically. The message “AM 9K
STEP” or “AM 10K STEP” appears on the fluorescent indicator
tube and thus the channel step is changed.

[DVD SHIP MODE (WITH MEMORY CLEAR)]

• This mode moves the optical pick-up to the position durable to
vibration and clears all data including preset data stored in the
RAM to initial conditions. Use this mode when returning the
set to the customer after repair.

Procedure:

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

2. Select DVD function.

3. Press x button, [DIRECTION] button and ?/1 button

simultaneously during “DVD NO DISC” condition. The system
will turn off automatically.

4. After the “STANDBY” blinking display finishes, a message

“MECHA LOCK” appears on the fluorescent indicator tube and
the DVD ship mode is set.

[DVD SHIP MODE (WITHOUT 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 ?/1 button to turn on the system.

2. Select DVD function.

3. Press [DVD] button and ?/1 button simultaneously during “DVD

NO DISC” condition. The system will turn off automatically.

4. After the “STANDBY” blinking display finishes, a message

“MECHA LOCK” appears on the fluorescent indicator tube and
the DVD ship mode is set.

[DVD TRAY LOCK MODE]

• This mode let you lock the disc tray. When this mode is
activated, the disc tray will not open when [OPEN/CLOSE]
button or [DISC SKIP/EX-CHANGE] button is pressed. The
message “LOCKED” will appears on the fluorescent indicator
tube.

Procedure:

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

2. Select DVD function.

3. Press x button and [OPEN/CLOSE] button simultaneously and

hold down until “LOCKED” or “UNLOCKED” appears on the
fluorescent indicator tube (around 5 seconds).

[TCM OFFLINE MODE]

• This mode prevents the system from turning off automatically
when TCM is not connected. Therefore, measurements can be
done even when TCM is not connected during production.

Procedure:

1. When the system is turned off, press [EQ BAND/MEMORY]

button, [TAPE A/B] button and ?/1 button simultaneously. The
system will turn on automatically.

2. The message “TCM OFFLINE” will appears on the fluorescent

indicator tube.

•To release from TCM Offline Mode

To release from this mode, perform “COLD RESET” or turn off
the power supply.

[TV/SAT SWITCHING]

• This mode let you switch from TV to SAT and vice-versa.

Procedure:

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

2. Select TV function.

3. Press [TV/SAT] button and ?/1 button simultaneously. The

function will change to SAT. Press the same buttons again to
change from SAT to TV.

[DVD COLOR SYSTEM]

• This mode let you change the color system of the video output
from PAL to NTSC or vice-versa. This mode is not available for
Latin American and Russian models.

Procedure:

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

2. Select DVD function.

3. Press ?/1 button again to turn off the system.

4. Press X button and ?/1 button simultaneously. The system

will turn on automatically.
The message “COLOR PAL” or “COLOR NTSC” appears on
the fluorescent indicator tube.

[REMOTE DISABLE MODE]

• This mode let you disable the remote commander reception.
When this mode is activated, the system will not response if the
button on the remote commander is pressed. The message “RM
DISABLE” appears on the fluorescent indicator tube.
This mode is essential for conducting test and repairing when
no interruption from the other remote commander is expected.
This mode is cancelled automatically when the system is turned
off.

Procedure:

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

2. Press x button, [DIRECTION] button and [DISC 3] button

simultaneously until “SIRCS ON” or “SIRCS OFF” appears on
the fluorescent indicator tube.

[PROGRESSIVE]

• This mode let you change the format of the video output from
the COMPONENT OUT jacks among PROGRESSIVE AUTO,
PROGRESSIVE VIDEO and INTERLACE.

Procedure:

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

2. Press [DVD] button and [DISPLAY] button simultaneously. “P

AUTO” or “P VIDEO” or “INTERLACE” appears on the
fluorescent indicator tube.

[MTK FIRMWARE DISPLAY]

• This mode is used to display the MTK firmware version.

Procedure:

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

2. Press [DVD] button to switch to DVD function.

3. Press ?/1 button again to turn off the system.

4. Press x button and ?/1 button. The system turns on

automatically.

5. The version of MTK firmware appears on the TV screen.

[DVD SERVICE MODE]

• This mode let you make diagnosis and adjustment easily by
using the remote commander and the TV. The instructions,
diagnostic results, etc. are given on the on-screen display.

18

HCD-GN999D

[DVD SERVICE MODE]

•This mode let you make diagnosis and adjustment easily by
using the remote commander and the TV. The instructions,
diagnostic results, etc. are given on the on-screen display.

• TEST DISC LIST

Be sure to use the DVD disc that matches the signal standards of
your region.

• CD

YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)

• DVD SL (Single Layer)
NTSC : HLX-503 (Part No.: J-6090-069-A)

HLX-504 (Part No.: J-6090-088-A)

PA L:HLX-506 (Part No.: J-6090-077-A)

• DVD DL (Dual Layer)
NTSC : HLX-501 (Part No.: J-6090-071-A)

HLX-505 (Part No.: J-6090-089-A)

PA L:HLX-507 (Part No.: J-6090-078-A)

• Procedure to enter to DVD Service Mode:

^/1

1. Press

button to turn on the system.

2. Select DVD function.

3. Press

button and [OPEN/CLOSE] button simultaneously and

x

then turn the [VOLUME] knob clockwise.

4. The message “SERVICE IN” appears on the fluorescent

indicator tube and the Top Menu of Remocon Diagnosis Menu
appears on the on-screen display on the TV. The model name
and revision number is displayed at the bottom of the on-screen
display.

Remocon Diagnosis Menu

0. External Chip Check

1. Servo Parameter Check

2. Drive Manual Operation

3. Emergency History

4. Version Information

Model Name : GML6DS_ME
IF-con : V
Syscon : Ver.

er. 01.00 (0000)

0.302

5. To execute each function, press its number by using numeric

button on the remote commander.

6. To release from this mode, press

^/1

button to turn off the

system.

• Execute IOP Measurement

In order to execute mirror time adjustment, the following
standard procedures must be followed.

1. From the Top Menu of Remocon Diagnosis Menu, select “2.

Drive Manual Operation” by pressing the [2] button on the
remote commander. The following screen appears on the on­screen display.

Drive Manual Operation

1. Servo Control

2. Track/Layer Jump

3. Manual Adjustment

4. Mecha test Mode

5. MIRR time Adjust

0. Return to Top Menu

2. Select “3. Manual Adjustment” by pressing the [3] button on

the remote commander. The following screen appears on the
on-screen display.

Manual Adjust

1. Track Balance Adjust:

2. Track Gain Adjust:

3. Focus Balance Adjust:

4. Focus Gain Adjust:

5. Eg Boost Adjust:

6. Iop:

7. TRV. Level:

8. S curve(FE) Level:

9. RFL(PI) Level:

0. MIRR Time:

O o Change Value
RETURN Return to previous menu

3. Select “6. Iop:” by pressing [6] button on the remote commander.

4. Wait until a hexadecimal number appears in the on-screen
display as below:

Manual Adjust

1. Track Balance Adjust:

2. Track Gain Adjust:

3. Focus Balance Adjust:

4. Focus Gain Adjust:

5. Eg Boost Adjust:

6. Iop. ED:

7. TRV. Level:

8. S curve(FE) Level:

9. RFL(PI) Level:

0. MIRR Time:

O o Change Value
RETURN Return to previous menu

5. Convert data from hexadecimal to decimal by using conversion
table.

6. Press [RETURN] button on the remote commander to return to
previous menu.

7. Press [0] button on the remote commander to return to the Top
Menu of Remocon Diagnosis Menu.

8. Press

^/1

button to turn off the system.

• Check Emergency History

To check the emergency history, please follow the following
procedure.

1. From the Top Menu of Remocon Diagnosis Menu, select “3.
Emergency History” by pressing the [3] button on the remote
commander. The following screen appears on the on-screen
display.

Emg.History Check

Laser Hours CD 999h 59min

1. 01 05 04 04
00 00 00 00 00 00 23 45

2. 02 02 01 01 00 A9 4B 00
00 00 00 00 00 00 23 45

Next Next Page Prev Prev Page

O Return to Top Menu

DVD 999h 59min

00 92 46 00

19

HCD-GN999D

2. You can check the total time when the laser is turned on during
playback of DVD and CD from the above menu. The maximum
time, which can be displayed are 999h 59min.

3. You can check the error code of latest 10 emergency history
from the above menu. To view the previous or next page of
emergency history, press . or > on the remote
commander. The error code consists of

• Error Code

Example of Error code

1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45

The meaning of error code is as below:

01: Communication error (No reply from syscon)
02: Syscon hung up
03: Power OFF request when syscon hung up
19: Thermal shutdown
24: MoveSledHome error
25: Mechanical move error (5 Changer)
26: Mechanical move stack error
30: DC motor adjustment error
31: DPD offset adjustment error
32: TE balance adjustment error
33: TE sensor adjustment error
34: TE loop gain adjustment error
35: FE loop gain adjustment error
36: Bad jitter after adjustment
40: Focus NG
42: Focus layer jump NG
52: Open kick spindle error
51: Spindle stop error
60: Focus on error
61: Seek fail error
62: Read Q data/ID error
70: Lead in data read fail
71: TOC read time out (CD)
80: Can’t buffering
81: Unknown media type

• Parameter of error code

This is the detail of error code.

To clear the Laser Hour

Press [DISPLAY] button and then press [CLEAR] button. The data
for both CD and DVD data are reset.

Emg.History Check

Laser Hours CD 0h 0min

1. 01 05 04 04
00 00 00 00 00 00 23 45

2. 02 02 01 01 00 A9 4B 00
00 00 00 00 00 00 23 45

Next Next Page Prev Prev Page

O Return to Top Menu

DVD 0h 0min

00 92 46 00

To clear the Emergency History

Press [MENU] button and then press [CLEAR] button. The error code
for all emergency history would be reset.

Emg.History Check

Laser Hours CD 999h 59min

1. 00 00 00 00
00 00 00 00 00 00 00 00

2. 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00

Next Next Page Prev Prev Page

O Return to Top Menu

DVD 999h 59min

00 00 00 00

To return to the Top Menu of Remocon Diagnosis Menu

Press [0] button on the remote commander.

• Check Version Information

To check the version information, please follow the following
procedure.

1. From the Top Menu of Remocon Diagnosis Menu, select “4.

Version Information” by pressing the [4] button on the remote
commander. The following screen appears on the on-screen
display.

Example of Error code

1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45

•Time of error code

This is the laser time when an error occurred.

Example of Error code

1. 01 05 04 04 00 92 46 00
00 00 00 00 00 00 23 45

20

Version information

Firm (Main) : Ver. xxxxx
Firm (Sub) : xxxxx
RISC : xxxxx
8032 : xxxxx
Audio DSP : xxxxx
Servo DSP : xxxxx

O Return to Top Menu

To return to the Top Menu of Remocon Diagnosis Menu, press
[0] on the remote commander.

SECTION 5

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

2.9m N • m to 6.9m N • m

FWD CQ-102C 30 to 70 g • cm

(0.42 – 0.97 oz • inch)

FWD

back tension

REV CQ-102RC 30 to 70 g • cm

REV

back tension

FF/REW CQ-201B 49 to 170 g • cm

CQ-102C 2 to 6 g • cm

CQ-102RC 2 to 6 g • cm

0.15m N • m to 0.59m N • m

(0.03 – 0.08 oz • inch)

2.9m N • m to 6.9m N • m

(0.42 – 0.97 oz • inch)

0.15m N • m to 0.59m N • m

(0.03 – 0.08 oz • inch)

4.8m N • m to 16.7m N • m

(0.68 – 2.36 oz • inch)

HCD-GN999D

21

HCD-GN999D

)

SECTION 6

ELECTRICAL ADJUSTMENTS

DVD SECTION

When the base unit is replaced, perform the adjustment and the
measurement as shown below in this order.

1) MIRROR TIME ADJUSTMENT

2) EXECUTING IOP MEASUREMENT (See page 19)

[TEST DISC LIST]

Be sure to use the DVD disc that matches the signal standards of
your region.

• CD
YEDS-18 (Part No.: 3-702-101-01)
PATD-012 (Part No.: 4-225-203-01)

• DVD SL (Single Layer)

NTSC : HLX-503 (Part No.: J-6090-069-A)

HLX-504 (Part No.: J-6090-088-A)

PAL : HLX-506 (Part No.: J-6090-077-A)

• DVD DL (Dual Layer)

NTSC : HLX-501 (Part No.: J-6090-071-A)

HLX-505 (Part No.: J-6090-089-A)

PAL : HLX-507 (Part No.: J-6090-078-A)

[RFMON Level Check]

Connection:

oscilloscope

DMB15 board

CN105 pin 6 (RFMON)

CN105 pin

3

(GND)

+

–

Checking Location: DMB15 board (Side A)

IC102

(SIDE A)

IC104

CN105

IC201

6

1

CN105 pin 3 (GND

DMB15 BOARD

IC101

CN106

CN105 pin 6 (RFMON)

VIDEO SECTION

Video Level Check (VIDEO BOARD)

Purpose

This adjustment is made to satisfy the NTSC standard, and if not
adjusted correctly, the brightness will be too large or small.

Procedure:

1. Connect an oscilloscope to CN105 pin 6 (RFMON) and
CN105 pin 3 (GND) on the DMB15 board.

2. Turn the power on.

3. Set the test disc (refer to the TEST DISC LIST) on the tray
and press H button to playback.

4. Confirm that oscilloscope waveform is clear and check
RFMON signal level is correct or not.

Note: A clear RFMON signal waveform means that the shape “◊” can be

clearly distinguished at the center of the waveform.

RFMON signal waveform

VOLT/DIV: 200 mV

TIME/DIV: 500 ns

level: 0.58 ± 1.23 Vp-p (DVD)

0.57 ± 1.1 Vp-p (CD)

oscilloscope

Ω

75

set

J1902
VIDEO OUTPUT

Procedure:

1. Connect oscilloscope to VIDEO output.

2. Load a DVD reference disc playback.

3. Check the video signal level is 1.00±0.07Vp-p.

(WHITE 100%)

1.00 ± 0.07 Vp-p

22

HCD-GN999D

r

e

DECK SECTION

0 dB=0.775 V

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 R­CH.

7. Switches and controls should be set as follows unless otherwise
specified.

•Test Tape

Tape Signal Used for

P-4-A063 6.3 kHz, –10 dB Azimuth Adjustment

Record/Playback Head Azimuth Adjustment

DECK A DECK B

Note: Perform this adjustments for both decks

Procedure:

1. Mode: Playback

3. Mode: Playback

pin 1

L

R

pin 2

good

MAIN
board
CN111

pin 3

oscilloscop

V

wrong

H

°

test tape
P-4-A063
(6.3 kHz, –10 dB)

L-CH

set

R-CH

waveform of oscilloscope

in phase 45°90°135°180

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

Adjustment Location: Playback Head (Deck A).

Record/Playback/Erase Head (Deck B).

test tape
P-4-A063
(6.3 kHz, –10 dB)

set

MAIN board
CN111
Pin 1 (L-CH)
Pin 3 (R-CH)

MAIN board
CN111
Pin 2 (GND)

level mete

+

–

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

forward

reverse

23

HCD-GN999D

MEMO

24

SECTION 7

d

DIAGRAMS

HCD-GN999D

For Schematic Diagrams.
Note:

• All capacitors are in µF unless otherwise noted. (p: pF)
50 V or less are not indicated except for electrolytics and
tantalums.

• All resistors are in Ω and 1/
specified.

•%: indicates tolerance.

• f : internal component.

• 2 : nonflammable resistor.

• 5 : fusible resistor.

Note:

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

• C : panel designation.

• A : B+ Line.

• B : B– Line.

•Voltages and waveforms are dc with respect to ground un­der no-signal (detuned) conditions.
DMB15 and VIDEO boards
no mark : DVD PLAY
Other board
no mark : TUNER (FM/AM)
( ) : DVD PLAY
< > : TAPE PLAY
[ ] : TAPE REC

* : Impossible to measure

•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.

•Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.

• Circled numbers refer to waveforms.

• Signal path.

F : AUDIO
e : TUNER
k : TAPE PLAY (DECK A)
d : TAPE PLAY (DECK B)
G : REC (DECK B)
J : DIGITAL
N : MIC
c : DVD/CD (RF)
L : VIDEO
E : Y
a : CHROMA
r : COMPONENT VIDEO
q : R, G, B

4

W or less unless otherwise

Note on Printed Wiring Boards.
Note:

• X : parts extracted from the component side.

• : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)

Caution:
Pattern face side: Parts on the pattern face side seen from
(SIDE A) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE B) the parts face are indicated.

• Indication of transistor.

C

Q

B

E

Q

B

CE

Q

B

CE

• Abbreviation
E2 : 120V AC Area in E model
E3 : 240V AC Area in E model
E12 : 220V-240V AC Area in E model
E13 : 220-230V AC area in E model
E15 : Iran model
E51 : Chilean and Perurian model
EA : Saudi Arabia model
MX : Mexican model
MY : Malaysia model
PH : Philippines model
SP : Singapore model
TH : Thai model

These are omitted.

These are omitted.

These are omitted.

• Circuit Boards Location

MOTOR (LD) board

KARAOKE board

POWER board

PANEL board

IR board

VOL board

MIC board

SENSOR board

SW board

DMB15 board

VIDEO board

TUNER pack

DRIVER board

MOTOR (TB) board

SPEAKER board

MAIN board

SMASTER boar

ADC board

NOTE ON REPLACEMENT OF DMB15 BOARD
New part of EEPROM (IC103) on the DMB15 board cannot be used. Therefore, if
the mounted DMB15 board (A-1167-802-A or A-1167-915-A or A-1188-872-A) is
replaced, exchange new EEPROM with that used before the replacement.

HCD-GN999D

2525

HCD-GN999D

1.0 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

1.3 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

1.6 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

1.6 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

0.8 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

2.0 Vp-p

H

1 V/DIV, 20 µsec/DIV

2.6 Vp-p

H

1 V/DIV, 20 µsec/DIV

1 V/DIV, 20

µ

sec/DIV

0.8 Vp-p

H

0.5 V/DIV, 20 µsec/DIV

1.5 Vp-p

H

1 V/DIV, 20 µsec/DIV

1 V/DIV, 20

µ

sec/DIV

2.0 Vp-p

H

1 V/DIV, 20 µsec/DIV

1 V/DIV, 20

µ

sec/DIV

2.0 Vp-p

H

1.5 Vp-p

H

2.6 Vp-p

H

1

IC1801 2

CIN

2

IC1801 4

CVBSIN

3

IC1801 6

YIN

qa

IC1801 wd

CVBSOUT

qs

IC1801 wh

C OUT

qd

IC1805 7

VOUT

4

IC1801 0

CYIN

5

IC1801 qs

CBIN

6

IC1801 qf

CRIN

7

IC1801 qh

CROUT

8

IC1801 qk

CBOUT

9

IC1801 w;

CYOUT

0

IC1801 wa

YOUT

•Waveforms
– DMB15 Board –

1

2V/DIV, 0.1 msec/DIV

2

2V/DIV, 20 nsec/DIV

3

IC301 9

IC301 0

41 nsec

IC102 6

BICK

0.33

m

sec

MCLK

DVDRFIP

3.3 Vp-p

4.0 Vp-p

4

0.1V/DIV, 0.5 msec/DIV

5

0.1 V/DIV, 0.5 msec/DIV

6

IC102 ea

IC102 es

IC102

XTALO

228

FED

TEO

0.1 Vp-p

0.1 Vp-p

– MAIN Board –

1

IC401 qa

1V/DIV, 10 µsec/DIV

2

IC401 qd

1V/DIV, 1

3

T101 5

XC-OUT

30.5

µsec

X-OUT

2 µsec

µ

sec/DIV

TAPE REC only

– VIDEO Board –

2.7 Vp-p

3.3 Vp-p

– SMASTER Board –

0.2V/DIV, 50 nsec/DIV

1

IC800 2

0.5V/DIV, 20 nsec/DIV

20.3 nsec

0.6 Vp-p

0.8 Vp-p

40 nsec

0.5V/DIV, 20 nsec/DIV

1.1 Vp-p

10.5 µsec

50V/DIV, 10 µsec/DIV

4

T101 4

50V/DIV, 10

TAPE REC only

10.5 µsec

µ

sec/DIV

67 Vp-p

82 Vp-p

– ADC Board –

1

IC03 1

HCD-GN999D

2V/DIV, 50 nsec/DIV

81.3 nsec

4 Vp-p

2626

7-1. BLOCK DIAGRAM – RF SECTION –

RF

A

CD LD

PD

DVD LD

WR650

VR780

B
C
D

F

E

VC

Q102 (1/2)

AUTOMATIC POWER

CONTROL (FOR CD)

Q102 (2/2)

AUTOMATIC POWER

CONTROL (FOR DVD)

Q101

Q103

DETECTOR

OPTICAL PICK-UP

BLOCK

(KHM-310CAB)

LASER
DIODE

(FOR CD)

LASER
DIODE

(FOR DVD)

6

2
3
4
5

19

18

8

9

10
11

29

23

20
21

22

50

DVDRFIP

DVDA
DVDB
DVDC
DVDD

TPI

TNI

NA

NB
MC
MD

V2O

LD01

MDI2

MDI1

LD02

MSW

OSP

252 253

OSN

IC102 (1/2)

CD/DVD RF AMP,

FOCUS/TRACKING ERROR AMP

DVD SYSTEM PROCESSOR

DIGITAL SERVO PROCESSOR

ASDATA0

ASDATA1

ASDATA2

ASDATQ3

ACLK

ABCK

ALRCK

XRST

SDA

SCL

VOICE/YUV7

SMSCK

217

218

219

222

215

214

213

220

103

102

206

208

14

SDTI1

15

SDTI2

16

SDTI3

13

SDTI4

10

MCLK

9

BICK

17

LRCK

8

PDN

CONVERTER

20

SDA

19

CSL

SDA

5

SCL

6

IC301

D/A

IC103

EEPROM

LOUT4+

LOUT4-

ROUT4+

ROUT4-

LOUT1+

LOUT1­ROUT1+
ROUT1-

LOUT3+

LOUT3-

ROUT3+

ROUT3-

LOUT2+

LOUT2-

ROUT2+

ROUT2-

IC3771

38
37
33
32

3
2
5
6

IC3711

2

1
48
47

3
2
5
6

IC3751

42
41
40
39

3
2
5
6

IC3731

46
45
44
43

(IC3711,3731,3751,3771)

3
2
5
6

BIAS

XVOICE
SCORE

AMP

AMP

AMP

AMP

Q3801

BIAS

B

1

7

1

7

1

7

1

7

MAIN

SECTION

(Page 30)

HCD-GN999D

LT

RT

FL

FR

MAIN

SECTION

A

(Page 30)

FC

SW(LEE)

SL

SR

AU+5V

2AXIS
DEVICE
FOCUS/

TRACKING

COIL

MSW

FCS+
FCS–

TRK+
TRK–

(SLED)

M1

(SPINDLE)

S1

(LIMIT)

M2

MM

MM

REG02

SP+
SP–

FOCUS/TRACKING COIL DRIVER,

IC201

SPINDLE, SLED MOTOR DRIVER

42

NC

41

NC

36 48
37 1

35 3
34 4

REG01

32
31

SL–

30

SL+

29

27
28

46
47

BUFFER

FOCUS COIL

DRIVE

TRACKING COIL

DRIVE

SLED MOTOR

DRIVE

SLED MOTOR

DRIVE

SPINDLE MOTOR

DRIVE

BUFFER

9
12
43

10
13

42

40

21
19
20
22

45

VREFO

FOO

TRO

FMO

DMO

IOP

IOPMON

VREFO

FMO
FOO

DMO
TRO

30

38

42

37

41

245

246

40

211

210

170

47

176

VREFO

FMO
FOO

DND
TRO

RFRPDC
RFRPAC

IOPMON

MUTE123
MUTE
TSD M

SPFG

LIMSW

TXD

RXD

V2 REF0

PRST

IFCK

IFSDO

IFSDI
XIFCS
IFBSY

MIC/VSYNC

KRMOD/HSYNC

107

106

28

110

99

98

101

100

105

205

207

CN105

1

2

5

6

26

33

32
31
27
28

25

24

TXD

RXD
V2REF0

RFMON

MTK-RESET

MTK-CLK

MTK-SOD
MTK-SIO
MTK-XIFCS
MTK-BUSY

MIC STATUS

KRMOD

(FOR CHECK)

IC401 (1/6)

SYSTEM

CONTROLLER

CN402

(1/3)

TXD1
RXD1
CLK1

(FOR CHECK)

• Signal Path

: DIGITAL

: AUDIO

: DVD/CD(RF)

HCD-GN999D

2727

HCD-GN999D

7-2. BLOCK DIAGRAM – VIDEO SECTION –

YUV1

YUV2

DISC/X

YUY3

YUY4

YUY5

YUV6

WODE

194

196

168

198

200

202

203

49

SW+5V

IC107

5

+3.3V

REG.

Q800

4

RF+3.3V

IC1801

VIDEO AMP, 75 DRIVER

6

2

9

4

10

12

14

25

YIN

CIN

I/P

CVBSIN

CYIN

CBIN

CRIN

SI

MUTE1

3 13

YOUT

COUT

VOUT

CYOUT

CBOUT

CROUT

MUTE2

21

26

23

20

18

16

AV SEL1

VOUT

CYOUT

CBOUT

CROUT

IC1805

VIDEO SELECT

3

1

2

7

VIDEO OUT SW

V MUTE

J1402(1/2)

J1902(1/2)

C

J1902(2/2)

J1900

IC401(2/6)

SYSTEM CONTROL

22

VIDEO-OUT-SW
VIDEO-MUTE

21

VIDEO

21

PB/C

PR/C

VIDEO
INPUT

• Signal Path

: VIDEO

: Y

Y

S VIDEO

43

Y

B

R

OUT

VIDEO OUT

COMPONENT

VIDEO OUT

CN402

(2/3)

: CHROMA

: COMPONENT VIDEO

: R, G, B

(FOR CHECK)

RTS1

HIGHA0-7
IOA0-7, IOA18-IOA20

AB0 – AB7

81-84,86-88,91

HD0 – HD7

29,31,33,35,38,40,42,44 25-16, 10-1, 40,12,48

DQ0 – DQ7

A16, A17

53-61, 67-72, 74-76,

78, 89, 92, 93

A0

A0 – A21

A1-A21

A0 – A21DQ15/A-1

IC101

FLASH ROM

IC105

+3.3V

5

REG.

4

IC102(2/2)

DVD SYSTEM PROCESSOR

IOCS

IOWA

IOUE

77

79

66

2645

28OE11

CE

WE

IC106

+3.3V

VDD

SW+3.3V

125-123, 121, 120, 118,

117, 115, 135, 133-128, 126

2,4,5,7,8,10,11,13,42,44,45,47,48,50,51,53

1 3

RD0 – RD15

RD0 – RD15

+1.8V

REG.

RF1.8V

DVDD18

RA0 – RA11

146, 147, 149-151,

158-160, 162, 164-166

22-26,

29-35

RA0 – RA11

IC104

SDRAM

RCLK

RCS

RWE

RAS

138

16

140

18

RWE

139

17

RAS

CAS

CAS

BA0

BA1

143

20

BS0

142

145 156 113 137 157

38

19

21

BS1

RCS

DRCLK

KDQM0

15

DQM0

KDQM1

39

DQM1

CLE

37

DRCKLE

TBL ADDRESS-SW

LM-F

LM-R

TM-F

TM-R

E-1

E-2

E-3

OPEN-SW

M+9V

IC731

Q731

42

TABLE SENSOR

3

4

1

2

IC701

LD MOTOR DRIVER

48

49

46
47

FIN

7
9

7
9

RIN

FIN
RIN

MOTOR

DRIVE

MOTOR

DRIVE

OUT2
OUT1

OUT2
OUT1

2

M

4

2
4

M751

(TABLE LOADING)

M741

M

(TABLE)

IC712

TBL MOTOR DRIVER

45

44

43

41

ENCODER

S751

(OPEN)

S711

ROTARY

HCD-GN999D

2828

7-3. BLOCK DIAGRAM – TAPE/TUNER SECTION –

DECK-A

L – CH

PB

HEAD

R – CH

DECK-B

L – CH

REC/PB

HEAD

R – CH

ERASE

HEAD

R-CH

R-CH

R-CH

Q166

Q154, 155

C174, L104

BIAS

TRAP

T101

BIAS OSC

Q101

SWITCH DRIVE

Q110, 111

SWITCH DRIVE

Q107, 108

BIAS+9V

Q113,114

Q109

R-CH

MUTING

Q175

TC REC

MUTING
CONTROL
Q301, 302

AIN1

75

76

BIN1

REC-OUT1

17

HCD-GN999D

A

B

EQ OUT1

78

IC101(1/2)

DECK A/B SELECT,

PB/REC EQUALIZER AMP

EQ

1

L

R

3

REC-OUT-L

TC-PB-L

TEST

CONNECTOR

C

D

MAIN

SECTION

(Page 30)

MAIN

SECTION

30

(Page

)

TAI1

79

PB OUT1

REC IN1

80

MUTING

R-CH

15

Q103

TC MUTING

CONTROL
Q303, 304

R-CH

CN111

AM

FM 75

COAXIAL

TAPE

MECHANISM

DECK

REC(FWD)

B SHUT
A SHUT

BHALF
AHALF

ATRGM+

BTRGM+

CAP M+

CN101

ANTENNA

FM/AM TUNER UNIT

FM ANT

AM ANT

AM ANT

ST-L

ST-R

TUNED

MC-DIN

MC-DOUT

ST-CLK

ST-CE

A TRIG

DRIVE

Q122, 123

B TRIG

DRIVE

Q118, 119

CAP MOTOR

DRIVE

Q120, 121

R-CH

ST-L

E

MAIN
SECTION
(Page

IC401(3/6)

SYSTEM CONTROL

(CD/TAPE MECHANISM CONTROL)

90

B SHUT
A SHUT

89

B-HALF

91

A-HALF

63

IC403(1/2)

17

A-TRIG

19

B-TRIG

CAPM-CNT

18

21

TC-RELAY

7

REC-MUTE

20

REC BIAS

30

)

SIGNAL IN/OUT CONTROL

TC-MUTE

LATCH

CLK

RESET

DI1

5

4

3

2

26

70 IO-EXP-LAT

69 IO-EXP-CLK

68 IO-EXP-RST

66 IO-EXP-DATA-OUT

TUNED

40

MC-DIN

37

MC-DOUT

39
38

ST-CLK
ST-CE

36

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

• SIGNAL PATH

: TUNER (FM/AM)

: PLAYBACK (DECK A)
: PLAYBACK (DECK B)

: RECORD

HCD-GN999D

2929

HCD-GN999D

7-4. BLOCK DIAGRAM – MAIN SECTION –

J1450(1/3)

MIC 2

J1400(1/3)

MIC 1

IC1400

DIGTAL ECHO

AD IN

23

ALC

MC1P

15

ALC

MC2P

16

MIC VOL

MIC
VOL

+ ++

PRE

ADC DAC S/HDELAY

LPF

ADPCM

ENCODE

VOLUME

CONTROL

ADPCM

DECODE

25

DA OUT

POST

LPF

ECHO

VOL

POOUT

IC1401

MIC AMP

3

29

7

MIC OUT

J1400(3/3)

J1450(3/3)

RF
SECTION
(Page 27)

D+4V

IC2002

LIMIT VOICE

COMPARATOR

J506

L+R

2

1

SCORE

XVOICE

IC2001

DETECT

COMPARATOR

TONE

3

D-LIGHT

SYNC OUT

RF

B

SECTION
(Page 27)

23 24

REC-OUT-L

CENTER

FRONT-L

FRONT-R

SUBWOOFER

SURROUND-L

SURROUND-R

+

R-CH

R-CH

28

31

30

37

R-CH

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

• SIGNAL PATH

: AUDIO

: TUNER (FM/AM)

: TAPE PLAY

: RECORD

D

TAPE/TUNER

SECTION

(Page 29)

AMP

F

SECTION
(Page 31)

VOL1

VOL2

VOL3

5 6 7

J1400(2/3)

J1450(2/3)

J501

TV/SAT IN

VIDEO

AUDIO

INPUT

TAPE/TUNER SECTION

(Page 29)

TAPE/TUNER SECTION

FL
FR
LT

RT

C

R-CH

R-CH

(Page 29)

L

R

J1402(2/2)

L

R

C

R-CH

5

2

R-CH

TC-PB-L

ST-L

E

TONE-L

1

3

57

4

29

A

SW

SL

SR

R-CH

MUTING

Q235

MUTING

Q236

MUTING

Q285

MUTING

Q238

MUTING

Q237

3

5

13

12

IC205

SELECTOR

DVD/CD MUTING

CONTROL
Q307,308

4

14

23

34

RV1401

MIC 2

LEVEL

VRSW

MIC DETECT

DVD-A-MUTE

INPUT

SELECT

SWITCH

RV1400

MIC 1

LEVEL

INTERFACE

DATA

83

RV1402

MCU

CLK

3435

84

M61537-CLK

M61537-DATA

ECHO

LEVEL

+

R-CH

R-CH

IC2000(1/2)

CONVERTER

IC2000(2/2)

MUSIC L+R AC/DC

CONVERTER

59

MIC

+

+

COMMAND

IC401(4/6)

SYSTEM CONTROL

MIC AC/DC

MCO

21

+

R-CH

147

L + R

53

88

VACS IN

IC101(2/2)

INPUT SELECT SWITCH,

GRAPHIC EQUALIZER CONTROL,

ELECTRICAL VOLUME

SURROUND

: MIC

HCD-GN999D

3030