Sony HCD-GX90D User manual

MINI HI-FI COMPONENT SYSTEM
Sony Corporation
Home Audio Company
Published by Sony Engineering Corporation
9-874-118-04
2003E16-1
© 2003.05
HCD-GX90D/RV800D
US Model
Canadian Model
HCD-GX90D
AEP Model
UK Model
HCD-RV800D
SERVICE MANUAL
DVD Model Name Using Similar Mechanism NEW
Section DVD Mechanism Type
CDM58D-DVBU17
Base Unit Name DVBU17
Tape deck Model Name Using Similar Mechanism NEW
Section Tape Transport Mechanism Type CWM43RR-01
•HCD-GX90D/RV800D are the tuner, deck, DVD
and amplifier section in MHC-GX90D/RV800D.
SPECIFICATIONS
Ver 1.3 2003. 05
This system incorporates Dolby* Digital, Pro Logic
Surround, DTS**, and the DTS Digital Surround
System.
* Manufactured under license from Dolby
Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol
are trademarks of Dolby Laboratories.
**Manufactured under license from Digital Theater
Systems, Inc. “DTS” and “DTS Digital Surround”
are registered trademarks of Digital Theater
Systems, Inc.
Amplifier section
North American model:
HCD-GX90D
Continuous RMS power output (reference)
Front speaker: 60 + 60 watts
(6 ohms at 1 kHz, 10%
THD)
Center speaker: 45 watts (8 ohms at 1 kHz,
10% THD)
Rear speaker: 40 + 40 watts
(6 ohms at 1 kHz, 10%
THD)
Sub woofer: 55 watts (4 ohms at 1 kHz,
10% THD)
Total harmonic distortion less than 0.07%
(6 ohms at 1 kHz, 70 W)
European model:
HCD-RV800D
DIN power output
Front speaker: 45 + 45 watts
(6 ohms at 1 kHz, DIN)
Center speaker: 33 watts
(8 ohms at 1 kHz, DIN)
Rear speaker: 30 watts
(6 ohms at 1 kHz, DIN)
Sub woofer: 38 watts
(4 ohms at 1 kHz, DIN)
Continuous RMS power output (reference)
Front speaker: 60 + 60 watts
(6 ohms at 1 kHz, 10%
THD)
Center speaker: 45 watts (8 ohms at 1 kHz,
10% THD)
Rear speaker: 40 + 40 watts
(6 ohms at 1 kHz, 10%
THD)
Sub woofer: 55 watts
(4 ohms at 1 kHz, 10%
THD)
Music power output (reference)
Front speaker: 120 + 120 watts
(6 ohms at 1 kHz, 10%
THD)
Center speaker: 90 watts (8 ohms at 1 kHz,
10% THD)
Rear speaker: 80 + 80 watts
(6 ohms at 1 kHz, 10%
THD)
Sub woofer: 110 watts
(4 ohms at 1 kHz, 10%
THD)
COMPONENT VIDEO OUT:
Y: 1 Vp-p, 75 ohms
PB, PR: 0.7 Vp-p, 75 ohms
PHONES (stereo mini jack):
accepts headphones of
8 ohms or more
Front speaker: accepts impedance of 6 to
16 ohms
Rear speaker accepts impedance of
24 ohms
Center speaker accepts impedance of
24 ohms
Sub woofer speaker accepts impedance of
12 to 16 ohms
Disc player section
System Compact disc and digital
audio and video system
Laser Semiconductor laser
(DVD: λ=650 nm,
CD: λ=780 nm)
Emission duration:
continuous
Wavelength 780 – 790 nm
Frequency response DVD (PCM 48 kHz):
2 Hz – 22 kHz (±1 dB)
CD: 2 Hz – 20 kHz
(±1 dB)
Video color system format NTSC, PAL
CD OPTICAL DIGITAL OUT
(Square optical connector jack, rear panel)
Wavelength 660 nm
Output Level –18 dBm
— Continued on next page —
Photo:HCD-RV800D

2
HCD-GX90D/RV800D
Tape deck section
Recording system 4-track 2-channel stereo
Frequency response 40 – 13,000 Hz (±3 dB),
using Sony TYPE I
cassette
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range 87.5 – 108.0 MHz
Antenna FM lead antenna
Antenna terminals 75 ohm unbalanced
Intermediate frequency 10.7 MHz
AM tuner section
Tuning range
Pan-American models: 530 – 1,710 kHz
(with the interval set at
10 kHz)
531 – 1,710 kHz
(with the interval set at
9 kHz)
European models: 531 – 1,602 kHz (with the
interval set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American model: 120 V AC, 60 Hz
European model: 230 V AC, 50/60 Hz
Power consumption
North American model:
HCD-GX90D 270 watts
European model:
HCD-RV800D 270 watts
0.25 watts (in Power
Saving Mode)
Dimensions (w/h/d)
HCD-GX90D Approx. 280 ×325 ×
368 mm
HCD-RV800D Approx. 280 ×325 ×
370 mm
Mass
HCD-GX90D Approx. 11.1 kg
HCD-RV800D Approx. 11.3 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 five-
character service number (e.g., C 13 00) with a
combination of a letter and digits appears on
the screen. In this case, check the following
table.
C:13:00
First three
characters of
the service
number
Cause and/or
corrective
action
C 13 The disc is dirty.
,Clean the disc with a soft cloth
(see page 70).
C 31 The disc is not inserted correctly.
,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
E XX
(XX is a number)
MODEL IDENTIFICATION
— BACK PANEL —
Parts No.
PARTS No.
4-240-189-0s
4-240-189-1s
4-240-189-2s
MODEL
US model
Canadian model
AEP, UK model

3
HCD-GX90D/RV800D
This appliance is classified as a CLASS 1 LASER product. The
CLASS 1 LASER PRODUCT MARKING is located on the rear
exterior.
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.
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 pick-
up block. Therefore, when checking the laser diode emission,
observe from more than 30 cm away from the objective lens.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINEWITH
MARK 0ON THE SCHEMATIC DIAGRAMS AND INTHE 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.
TABLE OF CONTENTS
1. GENERAL ·········································································· 4
2. DISASSEMBLY ································································ 6
2-1. Case (Top) ····································································· 7
2-2. Lid (DVD)····································································· 7
2-3. Front Panel Section ······················································· 8
2-4. DVD Mechanism Deck (CDM58D-DVBU17)············· 8
2-5. Tape Mechanical Deck (CWM43RR-01) ····················· 9
2-6. PANEL Board, SUB PANEL Board,
REMOTE Board ························································· 10
2-7. Cassette Holder ··························································· 11
2-8. SUB TRANSFORMER Board, Back Panel,
DC Fan (M961)··························································· 11
2-9. TRANSFORMER Board, MAIN Board····················· 12
2-10. FRONT AMP Board, SURROUND Board,
REG Board·································································· 12
2-11. VIDEO Board, MB Board ·········································· 13
2-12. RF Board, DRIVER Board ········································· 13
2-13. Optical Pick-up ··························································· 14
2-14. MOTOR Board, DIODE Board, SENSOR Board ······ 14
3. TEST MODE···································································· 15
4. MECHANICAL ADJUSTMENTS ····························· 18
5. ELECTRICAL ADJUSTMENTS ······························· 19
6. DIAGRAMS······································································ 21
6-1. Block Diagrams – DVD DSP Section – ···················· 21
– DVD SYS Section – ···················· 22
– Tuner Section – ···························· 23
– Main Section –····························· 24
6-2. Circuit Boards Location ·············································· 25
6-3. Printed Wiring Board – RF Board – ··························· 26
6-4. Schematic Diagram – RF Board – ······························ 27
6-5. Printed Wiring Board – MB Board (Side A) – ··········· 28
6-6. Printed Wiring Board – MB Board (Side B) – ··········· 29
6-7. Schematic Diagram – MB Board (1/6) – ···················· 30
6-8. Schematic Diagram – MB Board (2/6) – ···················· 31
6-9. Schematic Diagram – MB Board (3/6) – ···················· 32
6-10. Schematic Diagram – MB Board (4/6) – ···················· 33
6-11. Schematic Diagram – MB Board (5/6) – ···················· 34
6-12. Schematic Diagram – MB Board (6/6) – ···················· 35
6-13. Printed Wiring Board – TC Board – ··························· 36
6-14. Schematic Diagram – TC Board – ······························ 37
6-15. Printed Wiring Board – Main Section – ····················· 38
6-16. Schematic Diagram – Main Section (1/3) – ··············· 39
6-17. Schematic Diagram – Main Section (2/3) – ··············· 40
6-18. Schematic Diagram – Main Section (3/3) – ··············· 41
6-19. Printed Wiring Board – VIDEO Board – ···················· 42
6-20. Schematic Diagram – VIDEO Board – ······················· 43
6-21. Printed Wiring Board – FRONT AMP Board – ·········· 44
6-22. Schematic Diagram – FRONT AMP Board – ············ 45
6-23. Printed Wiring Board – SURROUND Board – ·········· 46
6-24. Schematic Diagram – SURROUND Board – ············· 47
6-25. Printed Wiring Board – Panel Section – ····················· 48
6-26. Schematic Diagram – Panel Section (1/2) – ··············· 49
6-27. Schematic Diagram – Panel Section (2/2) – ··············· 50
6-28. Schematic Diagram – Sensor Section – ······················ 51
6-29. Printed Wiring Board – Sensor Section – ··················· 51
6-30. Printed Wiring Board – TRANSFORMER Board –··· 52
6-31. Schematic Diagram – TRANSFORMER Board – ····· 53
6-32. Printed Wiring Board
– SUB TRANSFORMER Board – ····························· 54
6-33. Schematic Diagram
– SUB TRANSFORMER Board – ····························· 55
6-34. IC Pin Function Descriptions······································ 56
7. EXPLODED VIEWS ······················································ 67
7-1. Main Section ······························································· 67
7-2. Front Panel Section ····················································· 68
7-3. Chassis Section ··························································· 69
7-4. DVD Mechanism Deck Section
(CDM58D-DVBU17) ················································· 70
8. ELECTRICAL PARTS LIST······································· 71

4
HCD-GX90D/RV800D
This section is extracted from
instruction manual.
SECTION 1
GENERAL
BUTTON DESCRIPTIONS
?/1 (power) 1
v/V/b/B7
ZOPEN/CLOSE qd
ZPUSH (deck B) qj
–m/M + ws
hH ws
./> ws
Xws
xws
ZPUSH (deck A) wh
*1MHC-RV900D (except for
Latin American model) and
RV600D/RV600DJ (except
for Latin American model)
*2except for MHC-GX90D
*3MHC-RV900D and RV600D/
RV600DJ only
*4European model only
*5MHC-RV600D/RV600DJ only
*6MHC-GX90D only
Main unit
ALPHABETICAL ORDER
A – J
ALBUM+/– ws (19, 20, 26)
AUDIO jacks wl (61)
CD SYNC ql (48, 50)
Deck A wg (47)
Deck B qk (47, 48, 49, 50, 58)
DIRECTION 8(47, 48, 50, 58)
DISC 1 – 3 qs (18, 19, 20)
DISC SKIP/EX-CHANGE qd (17,
19, 22)
Disc tray qa (17)
DISPLAY 8(45, 53, 54, 55)
DVD eg (18, 20, 26, 27, 36, 48,
49)
DVD DISPLAY q; (18, 23, 24,
34, 36, 37, 38, 41, 55)
DVD MENU 8(26)
DVD TOP MENU 8(26)
ECHO LEVEL control*1wk (58)
EFFECT ON/OFF 4(51, 52)
ENTER qf (16, 18, 20, 23, 24, 26,
27, 34, 36, 37, 38, 43, 46, 49,
50, 52, 55, 57, 59)
FM MODE 8(45)
GAME ea (56, 61)
GAME EQ wd (51)
GAME MIXING wf (56)
GROOVE 3(51)
K – Z
KARAOKE PON*12(57)
MD (VIDEO)*2es (62)
MIC jack*3wj (57)
MIC LEVEL control*3wk (57)
MOVIE EQ 9(51)
MUSIC EQ 6(51)
P FILE wa (52)
PHONES jack qh
PLAY MODE 8(18, 20, 49)
PTY*48(46)
REC PAUSE/START w; (48, 50,
58)
REPEAT 8(23)
SURROUND*55(53)
TAPE A/B ed (47, 48, 58)
TUNER MEMORY 8(43)
TUNER/BAND ef (43, 44)
VIDEO jack e; (61)
VIDEO (MD)*6es (62)
VOLUME control qg (33, 53, 59)
12 34567 098qa
qs
qg
qf
qh
qj
qk
qlw;wa
qd
wswdwf
wg
wh
wj
e;
wl
wk
ea
ed
es
ef
eg
only
Ver 1.1 2002.10
Note for Service:
[DISC TRAY LOCK]
The disc tray lock function for the antitheft of a demonstration disc
in the store is equipped.
Setting Procedure :
1. Press the ?/1button to turn the set on.
2. Press two buttons of xand Zsimultaneously for five seconds.
3. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press two buttons of xand Zsimultaneously for five seconds.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note : When “LOCKED” is displayed, the tray lock is not released
by turning power on/off with the POWER button.

5
HCD-GX90D/RV800D
0
6
qs
9
qa
78
12345
qd
qg
ql
qf
qh
qk
w;
wf
wg
wh
wj
wk
wl
e;
ef
ea
ed es
ej
eh
eg
ek
el
r;
rs
rd rf
ra
wd
ws
wa
qj
Remote control
ALPHABETICAL ORDER
A – M
ALBUM +/– wd wl (19, 20, 26)
AMP MENU wa (57)
ANGLE w; (37)
AUDIO ed (35)
CLEAR qf (20, 22, 24, 25, 31)
CLOCK/TIMER SELECT 2
(51, 60)
CLOCK/TIMER SET 3(16, 50,
59)
DISC +/– wg wj (19, 20, 22)
DISPLAY qa (45, 53, 54, 55)
DVD rs (18, 20, 21, 26, 27, 28,
36, 48, 49)
DVD DISPLAY qd (18, 23, 24,
34, 36, 37, 38, 41, 55)
DVD MENU ef (26)
DVD SETUP ek (28, 33, 40)
DVD TOP MENU ef (26)
EFFECT ON/OFF es (51, 52)
ENTER wk (16, 18, 20, 21, 23,
24, 26, 27, 28, 33, 34, 36, 37,
38, 40, 43, 46, 49, 50, 52, 55,
57, 59)
GAME 8(56, 61)
GAME EQ e; (51)
GAME MIXING 0(56)
GROOVE es (51)
MD (VIDEO) 9(62)
MOVIE EQ e; (51)
MULTI ROOM* ea
MUSIC EQ e; (51)
N – Z
NEXT eh (18, 27)
Number buttons qs (19, 27, 39,
40, 42, 49)
P FILE ws (52)
PLAY MODE r; (18, 20, 21, 49)
PRESET +/– eh (43, 44)
PREV eh (18, 27)
REPEAT el (23)
RETURN Oej (27, 39, 41)
SCAN/SLOW /qk (19)
SLEEP 1(59)
SUBTITLE ql (38)
SURROUND es (53)
TAPE rd (47, 48)
TUNER/BAND ra (43, 44)
TUNING +/– eg (43, 45)
TV ?/1 4(15)
TV CH +/– rf (15)
TV/VIDEO 7(15)
TV VOL +/– 6(15)
VOL +/– wf (33, 53, 59)
BUTTON DESCRIPTIONS
?/1 (power) 5
xqg
nN qh
Xqj
M/m/</,wh
meg
Meg
.eh
>eh
* This button does not function.
Inserting two R6 (size AA)
batteries into the remote
E
e
E
e
Tip
With normal use, the batteries should last for about
six months. When the remote no longer operates the
system, replace both batteries with new ones.
Note
If you do not use the remote for a long period of time,
remove the batteries to avoid possible damage from
battery leakage.
Setting the clock
1Press ?/1 to turn on the system.
2Press CLOCK/TIMER SET on the
remote.
3Press Mor mon the remote repeatedly
to set the hour.
4Press ,on the remote.
The minute indication flashes.
5Press Mor mon the remote repeatedly
to set the minute.
6Press ENTER.
The clock starts working.
To adjust the clock
1Press CLOCK/TIMER SET on the remote.
2Press Mor mon the remote repeatedly to
select “CLOCK SET”, then press ENTER.
3Do the same procedures as step 3 to 6
above.
Note
The clock settings are canceled when you disconnect
the power cord or if a power failure occurs.

6
HCD-GX90D/RV800D SECTION 2
DISASSEMBLY
•The equipment can be removed using the following procedure.
DVD LID
SET
CASE (TOP)
FRONT PANEL SECTION
TAPE MECHANISM DECK
(CWM43RR-01)
VIDEO BOARD, MB BOARD
PANEL BOARD, SUB PANEL BOARD,
REMOTE BOARD
TRANSFORMER BOARD,
MAIN BOARD
CASSETTE HOLDER
OPTICAL PICK-UP
RF BOARD, DRIVER BOARD
MOTOR BOARD, DIODE BOARD,
TRAY, SENSOR BOARD
FRONT AMP BOARD,
SURROUND AMP BOARD,
REG BOARD
Note : Follow the disassembly procedure in the numerical order given.
DVD MECHANISM DECK BLOCK
SUB TRANSFORMER BOARD,
BACK PANEL, DC FAN (M961)

7
HCD-GX90D/RV800D
2-1. Case (Top)
Note: Follow the disassembly procedure in the numerical order given.
2 three screws (case 3 TP2)
3 seven screws (BVTT 3 × 6
)
1 three screws (case 3 TP2)
4 case
1 T urn the pulley to the direction of arrow.
pulley
DVD mechanism deck (CDM58D-DVBU17)
2 Pull-out the disc tray.
4 lid (DVD)
3
2-2. Lid (DVD)

8
HCD-GX90D/RV800D
chassis section
2 flat type wire (CN605)
6 connector (CN602)
1 connector (CN502)
8 front panel section
7 connector (CN603)
5 three screws (BVTP 3 × 8)
3 screw
(BVTP 3
× 8)
4 screw (BVTP 3 × 8)
chassis section
1 connector (CN103)
4 connector (CN103)
0 DVD mechanism deck
(CDM58D-DVBU17)
5 connector (CN505)
6 connector (CN508)
2 flat type wire (CN104)
3 connector
(CN709)
7 three screws (BVTP 3 × 8)
8 two screws
(BVTP 3
× 8)
9 five screws
(BVTP 3
× 8)
2-3. Front Panel Section
2-4. DVD Mechanism Deck (CDM58D-DVBU17)

9
HCD-GX90D/RV800D
panel section
2 tape mechanism deck
(CWM43RR-01)
1 six screws (BVTP 2.6 × 8
)
2-5. Tape Mechanical Deck (CWM43RR-01)

10
HCD-GX90D/RV800D
1 volume knob
qs four screws
(BVTP 2.6
× 8)
3 five screws
(BVTP 2.6
× 8)
4 six screws
(BVTP 2.6
× 8)
qd two screws
(BVTP 2.6
× 8)
front panel
7 PANEL board
9 REMOTE board
2 Remove the
three solderings
qf SUB PANEL board
qa connector (CN1002)
0 connector (CN1003)
8 connector (CN1006)
5 two claws
6 two claws
2-6. PANEL Board, SUB PANEL Board, REMOTE Board

11
HCD-GX90D/RV800D
panel section
4 cassette, holder (L)
3 cassette door, spring (B)
1
5
6
2
7 cassette door, spring (A)
8 cassette, holder (R)
chassis section
1 connector (CN901)
2 connector (CN902)
3 connector (CN903)
4 connector (CN704)
qa SUB TRANSFORMER board
qf back panel
qd dc fan (M961)
9 four screws
(BVTP 3
× 8)
0 three screws
(BVTP 3
× 8)
8 two screws
(BVTP 3
× 8)
7 two screws
(BVTP 3
× 8)
6 three screws
(BVTP 3
× 8)
5 five screws
(BVTP 3
× 8)
qs two screws
(BVTP 3
× 8
)
2-7. Cassette Holder
2-8. SUBTRANSFORMER Board, Back Panel, DC Fan (M961)

12
HCD-GX90D/RV800D
3 connector
(CN913)
2 connector
(CN915)
1 connector
(CN914)
qd connector (CN609)
qf connector (CN608
)
6 TRANSFORMER board
qg TC board
qs two claws
qj SURROUND board and
FRONT AMP board assy
qh MAIN board
qa cover (heat sink)
5 two screws
(BV 4
× 8)
4 two screws
(BV 4
× 8)
0 two screws
(BVTP 3
× 8)
9 two screws
(BVTT 3
× 6)
8 three screws
(BVTT 3
× 6)
7 two screws
(BVTP 3
× 8)
heat sink assy
7 connector (CN302)
qd FRONT AMP board
6 REG board
qs SURROUND board
0 five screws
(BVTP 3 × 8)
8 two screws
(BVTP 3 × 8)
1 two screws
(BVTP 3
× 8)
5 s crew
(BVTP 3 × 8)
2 bracket (PWB)
4 bracket (PWB)
3 three screws
(BVTP 3
× 8)
qa two screws
(BVTP 3
× 16)
9 four screws
(BVTP 3 × 16)
2-9. TRANSFORMER Board, MAIN Board
2-10.FRONT AMP Board, SURROUND Board, REG Board

13
HCD-GX90D/RV800D
1 flat type wire (CN501,CN202)
6 flat type wire (CN501
)
2 flat type wire
(CN503,CN302)
7 two screws
(BVTP 3
× 8)
qd screw
(BVTP 3
× 8)
9 screw
(BVTT 3
× 6)
qf screw
(BVTP 3
× 8)
3 two screws
(BVTP 3
× 8)
4 PWB holder
5 VIDEO board
qa
qs heat sink (DVD
)
qg MB board
8 bracket (AL)
0 two screws
(BVTP 3
× 8)
4 flat type wire
6 cushion (DVD)
7 cushion (DVD)
5 connector
1 screw
(BVTP 3 × 8)
38
bracket (DVD)
2 cushion (A)
qs RF board
9
0
qa
two screws (PTP 2.6 × 12)
qd screw (BVTP 2.6 × 8
)
qf DRIVER board
2-11. VIDEO Board, MB Board
2-12. RF Board, DRIVER Board
Ver 1.2 2002.11

14
HCD-GX90D/RV800D
7 insulator
2
8
insulator
6 insulator
0 holder (DBU1) assy
4 step screw (L)
5 step screw (L)
1 floating screw (PTPWH M2.6
)
3 step screw (L)
9 optical pick-up
qs tray (DVD)
qa screw (PTPWH 2.6 × 8)
1 two screws (BVTP 2.6 × 8)
9 screw (BVTP 2.6 × 8)
7 screw (BVTP 2.6 × 8)
qd screw (BVTP 2.6 × 8)
5 connector (CN723)
4 connector (CN722)
3 flat type wire (CN721)
6 MOTOR board
qf SENSOR board
8 DIODE board
0 bracket (sensor)
2 Remove the two solderings of motor.
2-13.Optical Pick-up
2-14.MOTOR Board, DIODE Board, SENSOR Board

15
HCD-GX90D/RV800D
[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, ENTER , and ?/1simultaneously.
2. The fluorescent indicator tube display “COLD RESET” and
the set is reset.
[Hot Reset]
1. Press three buttons x, GAME EQ , and DISPLAY simulta-
neously.
2. The fluorescent indicator tube becomes blank instantaneously,
and the set is reset
[Tuner Step Change] (Except for European and Middle Eastern
models)
•Astep of AM channels can be changed over 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 ENTER 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.
[VIDEO/MD Function Change]
•Change of functionVIDEO or MD ( also the input level changes).
Procedure:
1. Press `/1 button to turn the set ON.
2. Press VIDEO (MD) and `/1 buttons simultaneously, and the
display of fluorescent indicator tube changes to “MD” or
“VIDEO”, and thus the channel step is changed over.
3. Press `/1 button to turn the set OFF.
[DISC TRAY LOCK]
The disc tray lock function for the antitheft of a demonstration disc
in the store is equipped.
Setting Procedure :
1. Press the ?/1button to turn the set on.
2. Press two buttons of xand Zsimultaneously for five seconds.
3. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press two buttons of xand Zsimultaneously for five seconds.
2. The message “UNLOCKED” is displayed and the tray is
unlocked.
Note : When “LOCKED” is displayed, the tray lock is not released
by turning power on/off with the POWER button.
SECTION 3
TEST MODE
5. When the Key count check mode is entered, the display shows
the indication of “KEY 0 1”.
Whenever the button is pressed, number in the first digit
increments. (RV90D: 38) At the same time, only when the key
is being pressed, the KEY channel is displayed in the second
digit. (KEY0: 1, KEY1: 2, KEY2: 3)
(The buttons that are already pressed once and the buttons of
?/1and DISPLAY are not counted.)
6. When the Headphones input check mode is entered, the display
shows the indication of “H_P OFF” or “H_P ON” depending
on the PHONES jack status.
7. When the Volume check mode is entered, the display shows the
indication of “VOLUME FLAT” or “VOLUME DOWN” or
“VOLUME UP” depending on the VOLUME status.
8. You can exit the Test Mode when you press the GAME EQ
and DISC 2 buttons simultaneously.
[GC Test Mode]
•This mode is used to check the FL tube, LED, keyboard, vol-
ume and phones.
Procedure:
1. Press three buttons x, GAME EQ , and DISC 2 simulta-
neously.
2. LEDs and fluorescent indicator tube are all turned on.
3. Press simultaneously the two buttons of GAME EQ and DISC
2 . Whenever these two buttons are pressed simultaneously, the
mode changes from Key check, Key count check, Headphones
input check and Volume check in this order.
4. When the Key check mode is entered, the display shows the
indication of “KEY 0 0 0”.
The keys that are assigned to the respective channels of the key
entry signal lines (KEY0, KEY1, KEY2) that are input to IC001
Display Controller on the panel board, are checked. While you
press the button, the number that corresponds to the key shown
in the table below, is displayed in the location of the
corresponding channel. (The ?/1and DISPLAY buttons are
not included in these channels.)
Display Left Center Right
(KEY0) (KEY1) (KEY2)
1DVD XDISC 1
2TUNER/BAND xDISC 2
3TAPE A/B ALBUM + DISC 3
4VIDEO (MD) >ZOPEN/CLOSE
5GAME M+ DISC SKIP/
EX-CHANGE
6— g G TUNER MEMORY
PLAY MODE
7DVD MENU – mFM MODE
REPEAT
8GAME EQ ALBUM – DIRECTION
DVD TOP MENU
9MUSIC EQ .CD SYNC
10
EFFECT ON/OFF bREC
PAUSE/START
11 GAME MIXING VP FILE
12 GROOVE BENTER
13 — vMOVIE EQ
14 — — DVD DISPLAY
Ver 1.1 2002.10

16
HCD-GX90D/RV800D
[MCTest Mode]
•This mode is used to check operations of the respective sections
of Amplifier, Tuner, and Tape.
Procedure:
•To enter MC Test Mode
1. Press `/1 button to turn on the set.
2. Press the three buttons of x , GAME EQ and DISC 3 simul-
taneously.
*Check of Amplifier
Initial settings: Input ,GAME
EQ ,FLAT
Mode ,MUSIC
VA CS ,OFF
Output channel switching:
MUSIC key: L ,LR,R through
MOVIE key: L ,SL R ,SR through
GAME key:L ,L, SL, C R ,R, SR, SW through
TOOL MODE key: L ,CR,SW through
1. When VOLUME control knob is turned clockwise even
slightly, the sound volume increases to is maximum and a
message “VOLUME MAX” appears for two seconds, then the
display returns to the original display.
2. When VOLUME control knob is tuned counter-clockwise
even slightly, the sound volume decreases to its minimum and a
message “VOLUME MIN” appears for two seconds, then the
display returns to the original display.
3. When you press the vbutton, the message “GEQ MAX” is
displayed and the entire band of the graphic equalizer is set to
the maximum level.
4. When you press the Vbutton, the message “GEQ MIN” is
displayed and the entire band of the graphic equalizer is set to
the minimum level.
5. When you press the b, Bor P FILE button, the message
“GEQ FLT” is displayed and the entire band of the graphic
equalizer is set to the center level.
6. Whenever you press the ENTER button, it toggles between
“VACS ON” and “VAC OFF” so that you can switch ON or
OFF of VACS.
*To return to normal mode again.
1. When you want to exit this mode, press `/1 button.
2. The cold reset is enforced at the same time.
[Aging Mode]
This mode can for operation check of tape deck section.
•If an error occurred:
The aging operation stops and display then status.
•If no error occurs:
The aging operation continues repeatedly.
Procedure:
1. Press the DVD button to select the function “DVD”.
2. Load the tapes into the decks A and B respectively.
3. Set a disk in “DISK1” tray.
4. Press the PLAY MODE button to set the “ALL DISCS” mode,
and press the REPEAT button to “REPEAT” off.
5. Press three buttons of x, GAME EQ , and DISC SKIP/EX-
CHANGE simultaneously.
6. The florescent indicator tube display “AGING”, aging mode
start.
7. To exit from the aging mode, operate the cold reset.
•The sequence during the aging mode is following as below.
•If an error occurred, stop display that step.
Aging mode sequence (Tape deck section):
Rewind the tape A
“TAPE A AG-1”
Rewind the tape B
“TAPE A AG-2”
FWD play the tape A
“TAPE A AG-3”
Fast forward the tape A
“TAPE A AG-4”
RVS play the tape A
“TAPE A AG-5”
Rewind the tape A
“TAPE A AG-6”
FWD play the tape B
“TAPE B AG-3”
Fast forward the tape B
“TAPE B AG-4”
RVS play the tape B
“TAPE B AG-5”
Rewind the tape B
“TAPE B AG-6”
Shut off
Shut off
2 minutes
Shut off or 20 seconds
2 minutes
Shut off
2 minutes
Shut off or 20 seconds
2 minutes
Shut off

17
HCD-GX90D/RV800D
[DVD and CD Ship Mode (No Memory Clear)]
•This mode moves the position 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. Press three DVD button and `/1 button simultaneously.
3. After the “STANBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator rube, and the
DVD ship mode is set.
[DVD and CD Ship Mode (Memory Clear)]
•This mode moves the pickup to the position durable to vibra-
tion. Use this mode when returning the set to the customer after
repair.
Procedure:
1. Press `/1 button to turn the set ON.
2. Press three buttons ENTER , DISC 1 , and DVD button
simultaneously.
3. After the “STANDBY” display blinks six times, a message
“LOCK” is displayed on the fluorescent indicator tube, and the
DVD ship mode is set.
[DVD Service Mode]
•The sequence during the aging mode is following as below.
Aging mode sequence (DVD section):
Disc 1 Chucking
TOC Read
Tray Turn
2 seconds
Track 1 Play
Last Track Play
2 seconds
Ver 1.3 2003.05

18
HCD-GX90D/RV800D
[REPEAT 5 LIMIT OFF MODE]
•This mode is used to enable infinite repetitions.
Normally, the number of repetitions allowed is 5.
Procedure:
1. Press `/1 button to turn ON the power supply.
2. Set the function “DVD”.
3. Press three burtons x, MUSIC EQ and DISC 2 is simulta-
neously.
4. Infinite repetitions is enabled.
5. This state is maintained ( memorized ) until COLD RESET is
executed.
SECTION 4
MECHANICAL ADJUSTMENTS
Precaution
1. Clean the following parts with a denatured alcohol-moistened
swab:
record/playback heads pinch rollers
erase head rubber belts
capstan idlers
2. Demagnetize the record/playback head with a head
demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
5. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
Torque Measurement
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
3.06 N • m to 6.96 N • m
31 to 71 g • cm
(0.43 – 0.98 oz • inch)
0.19 N • m to 0.58 N • m
2 to 6 g • cm
(0.02 – 0.08 oz • inch)
6.96 N • m to 14.02 N • m
71 to 143 g • cm
(0.98 – 1.99 oz • inch)
9.80 N • m
100 g or more
(3.53 oz or more)
9.80 N • m
100 g or more
(3.53 oz or more)
Mode Torque meter
CQ-102C
CQ-102C
CQ-102RC
CQ-102RC
CQ-201B
CQ-403A
CQ-403R
Meter reading
FWD
FWD
back tension
REV
REV
back tension
FF/REW
FWD tension
REV tension

HCD-GX90D/RV800D
19
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
DECK SECTION
1. Demagnetize the record/playback head with a head
demagnetizer.
2. Do not use a magnetized screwdriver for the adjustments.
3. After the adjustments, apply suitable locking compound to the
parts adjust.
4. The adjustments should be performed with the rated power
supply voltage unless otherwise noted.
5. The adjustments should be performed in the order given in this
service manual. (As a general rule, playback circuit adjustment
should be completed before performing recording circuit
adjustment.)
6. The adjustments should be performed for both L-CH and R-
CH.
7. Switches and controls should be set as follows unless otherwise
specified.
•Test Tape
Record/Playback Head Azimuth Adjustment
Tape Signal Used for
P-4-A100 10 kHz, –10 dB Azimuth Adjustment
WS-48B 3 kHz, 0 dB Tape Speed Adjustment
P-4-L300 315 Hz, 0 dB Level Adjustment
DECK A DECK B
Note: Perform this adjustments for both decks
Procedure:
1. Mode: Playback
set
main board
CN607
Pin
5 (L-CH)
Pin
7 (R-CH)
main board
CN607
Pin
6 (GND)
+
–
level mete
r
test tape
P-4-A100
(10 kHz, –10 dB)
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.
3. Mode: Playback
4. After the adjustments, apply suitable locking compound to the
pats adjusted.
Adjustment Location: Playback Head (Deck A).
Record/Playback/Erase Head (Deck B).
Screw
position
L-CH
peak
within
1dB
Output
level
L-CH
peak R-CH
peak
within
1dB
Screw
position
R-CH
peak
MAIN
board
CN607
set
test tape
P-4-A100
(10 kHz, –10 dB)
pin
7
oscilloscope
L-CH
R-CH
VH
waveform of oscilloscope
in phase 45 ° 90 ° 135 ° 180 °
good wrong
pin 6
pin 5
L
R
forward
reverse

HCD-GX90D/RV800D
20
FMTuned Level Adjustment
Procedure:
1. Supply a 25 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust RV11 to the point (moment) when the TUNED indicator
will change from going off to going on.
Adjustment Location: MAIN board
Null Adjustment
Procedure:
1. Supply a 60 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Measure voltage between pin 22 and pin 3 of IC 11. Adjust
T11 ubtil the voltage becomes 0 V.
Adjustment Location: MAIN board
Adjustment Location
[MAIN BOARD] Component side
FM RF SSG
75
Ω coaxial
Carrier frequency : 98 MHz
Modulation : AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 25 dB (at 75
Ω open)
FM ANTENNA terminal
(TM1)
set
FM RF SSG
75 Ωcoaxial
Carrier frequency : 98 MHz
Modulation :AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level : 60 dB (at 75 Ω open)
FM ANTENNA terminal
(TM1)
set
TUNER SECTION
T11
NULL
RV11
FM TUNED LEVEL
112
24 13
IC11
TM1
IC1104