SERVICE MANUAL
DA
TA
DVD STEREO SYSTEM
HT-DV90
S/M Code No. 09-01C-359-3R1
U (S) K(S) EZ(S)
BASIC DVD/CD MECHANISM: MGD-F6103A
This Service Manual is the "Revision Publishing" and replace
"Simple Manual" (S/M Code No. 09-01B-359-3T1).
REVISION
B 1.0
-2-
TABLE OF CONTENTS
SPECIFICATIONS ..................................................................................................................................................................... 3 ~ 4
PROTECTION OF EYES FROM LASER BEAM DURING SERVING ............................................................................................ 5
ACCESSORIES LIST ...................................................................................................................................................................... 6
ELECTRICAL MAIN PARTS LIST ........................................................................................................................................... 7 ~ 23
TRANSISTOR ILLUSTRATION ..................................................................................................................................................... 24
BLOCK DIAGRAM - 1 (OVERALL) ............................................................................................................................................... 25
WIRE HARNESS DIAGRAM ......................................................................................................................................................... 26
SCHEMATIC DIAGRAM - 1 (MAIN SECTION - 1/2) ..................................................................................................................... 27
SCHEMATIC DIAGRAM - 2 (MAIN SECTION - 2/2) ..................................................................................................................... 28
SCHEMATIC DIAGRAM - 3 (FRONT/KEY1/KEY2 SECTION) ..................................................................................................... 31
SCHEMATIC DIAGRAM - 4 (FUNCTION SECTION) .................................................................................................................... 34
SCHEMATIC DIAGRAM - 5 (POWER SECTION) <EZ, K> .......................................................................................................... 36
SCHEMATIC DIAGRAM - 6 (POWER SECTION) <U> ................................................................................................................. 38
SCHEMATIC DIAGRAM - 7 (DVD MAIN SECTION) ..................................................................................................................... 40
WIRING - 1 (MAIN C.B -1/2) ......................................................................................................................................................... 29
WIRING - 2 (MAIN C.B -2/2) ......................................................................................................................................................... 30
WIRING - 3 (FRONT C.B) ............................................................................................................................................................. 32
WIRING - 4 (KEY1/KEY2 C.B) ...................................................................................................................................................... 33
WIRING - 5 (FUNCTION C.B) ....................................................................................................................................................... 35
WIRING - 6 (POWER LED C.B) <EZ, K> ...................................................................................................................................... 37
WIRING - 7 (POWER LED C.B) <U> ............................................................................................................................................ 39
WIRING - 8 (DVD C.B) .................................................................................................................................................................. 41
DVD SECTION WIRING DIAGRAM 1/1 ........................................................................................................................................ 42
LCD DISPLAY ............................................................................................................................................................................... 43
IC BLOCK DIAGRAM ............................................................................................................................................................ 44 ~ 47
IC DESCRIPTION ................................................................................................................................................................. 48 ~ 61
MECHANICAL EXPLODED VIEW 1/1 .......................................................................................................................................... 62
MECHANICAL MAIN PARTS LIST 1/1 ......................................................................................................................................... 64
COLOR NAME TABLE .................................................................................................................................................................. 65
MECHANISM EXPLODED VIEW 1/1 ............................................................................................................................................ 66
MECHANISM MAIN PARTS LIST 1/1 ........................................................................................................................................... 67
OTHER PARTS LIST 1/1 ............................................................................................................................................................... 68
SPEAKER EXPLODED VIEW 1/1 ................................................................................................................................................. 69
SPEAKER PARTS LIST 1/1 .......................................................................................................................................................... 70
SPEAKER OTHER PARTS LIST 1/1 ............................................................................................................................................. 71
SPEAKER DISASSEMBLY INSTRUCTION .......................................................................................................................... 72 ~ 73
AMPLIFIER ADJUSTMENT .......................................................................................................................................................... 74
-3-
SPECIFICATIONS -1/2
[EZ, K Models]
Main unit HT-DV90
FM tuner section
Tuning range
87.5 MHz to 108 MHz
Usable sensitivity (IHF)
16.2 dBf
Antenna jack
75 ohms (unbalanced)
AM tuner section
Tuning range
531 kHz to 1629 kHz (9 kHz step)
530 kHz to 1710 kHz (10 kHz step)
Usable sensitivity
700 µV/m
Antenna
Loop antenna
Amplifier section
Power output
Front
Rated: 38 W + 38 W
(6 ohms, T.H.D 1%, 1 kHz/DIN 45500)
Reference: 50 W + 50 W
(6 ohms, T.H.D. 10%, 1 kHz/DIN 45324)
DIN MUSIC POWER: 50 W + 50 W
Rear (Surrond)
Rated: 38 W + 38 W
(6 ohms, T.H.D 1%, 1 kHz/DIN 45500)
Reference: 50 W + 50 W
(6 ohms, T.H.D. 10%, 1 kHz/DIN 45324)
DIN MUSIC POWER: 50 W + 50 W
Center
Rated: 38 W
(6 ohms, T.H.D 1%, 1 kHz/DIN 45500)
Reference: 50 W
(6 ohms, T.H.D. 10%, 1 kHz/DIN 45324)
DIN MUSIC POWER: 50 W
Subwoofer
Rated: 38 W
(6 ohms, T.H.D 1%, 100 Hz/DIN 45500)
Reference: 50 W
(6 ohms, T.H.D. 10%, 100 Hz/DIN 45324)
DIN MUSIC POWER: 50 W
Total harmonic distortion 0.2% (10 W, 1 kHz, 6 ohms, DIN AUDIO,
Front)
Input/output
Input
AUDIO VIDEO 1 IN, AUDIO VIDEO 2 IN:
370 mV (47 kohms)
OPTICAL IN VIDEO 1, OPTICAL IN VIDEO 2:
accept linear PCM signals and Dolby Digital
and DTS surround bitstream (32 kHz,
44.1 kHz, 48 kHz, and 96 kHz)
VIDEO VIDEO 1 IN, VIDEO VIDEO 2 IN:
1 Vp-p (75 ohms, unbalanced)
Output
AUDIO VIDEO 1 OUT: 350 mV (47 kohms)
OPTICAL OUT
VIDEO VIDEO 1 OUT, VIDEO OUT:
1 Vp-p (75 ohms, unbalanced)
S-VIDEO OUT
Y output: 1 Vp-p (75 ohms, sync negative)
C output: 0.286 Vp-p
FRONT SPEAKERS: accept speakers of
6 ohms
SURROUND SPEAKERS: accept speakers
of 6 ohms
CENTER SPEAKER: accept speakers of
6 ohms
SUB WOOFER terminal: 6 ohms
SUB WOOFER jack: 1 V
PHONES (mini jack): accepts headphones of
32 phms or more
General
Power requirements
230 V AC, 50 Hz
Power consumption
85 W
Power consumption
4W in standby mode
Dimensions
430 (W) x 70 (H) x 311 (D) mm
Weight
4.3 kg
Disc player section
Colour system
PAL/MULTI/NTSC (Switchable)
Supported discs
DVD video discs
12 cm (single-sided sigle-layer, single-sided
double-layer, double-sided-doubel layer)
8 cm (single-sided sigle-layer, single-sided
double-layer, double-sided-doubel layer)
Compact discs (CD-DA, CD-R/RW, video
CD)
12 cm and 8 cm discs
Audio output characteristics
Frequency range: 20 Hz to 20 kHz
Operating conditions
5 °C to 35 °C (41 °F to 95 °F)
Spekaer system
Speakers
Front, Surround, Center: full range, 100 mm
bass reflex type
Subwoofer: 200 mm, bass reflex type
Impedance
6 ohms
Maximum input power
55 W (peak)
Dimensions (W x H x D)
SX-F90 (Front): 115 x 153 x 138 mm
SX-R90 (Surround): 115 x 153 x 138 mm
SX-C90 (Center): 153 x 115 x 138 mm
TS-W90 (Subwoofer): 180 x 335 x 390 mm
Weight
SX-F90 (Front): 1 kg
SX-R90 (Surround): 0.8 kg
SX-C90 (Center): 1 kg
TS-W90 (Subwoofer): 4.9 kg
· Design and specifications are subject to change without notice.
· Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic"
and the double-D symbol are trademarks of Dolby Laboratories. Confi-
dential unpublished works. ©1992-1997 Dolby Laboratories. All right re-
served.
· Manufactured under license from Digital Theatre Systems, Inc. US Pat.
No. 5,451,942 and other worldwide patents issued and pending. "DTS"
and "DTS Digital Surround" are trademarks of Digital Theatre Systems,
Inc. ©1996 Digital Theatre Systems, Inc. All right reserved.
-4-
[U Model]
Main unit HT-DV90
FM tuner section
Tuning range
87.5 MHz to 108 MHz
Usable sensitivity (IHF)
16.2 dBf
Antenna jack
75 ohms (unbalanced)
AM tuner section
Tuning range
531 kHz to 1629 kHz (9 kHz step)
530 kHz to 1710 kHz (10 kHz step)
Usable sensitivity
700 µV/m
Antenna
Loop antenna
Amplifier section
Power output
Front
Rated: 38 W + 38 W
(40 Hz - 20 kHz, T.H.D less than 1%, 6 ohms)
Reference: 50 W + 50 W
(40 Hz - 20 kHz, T.H.D less than 10%, 6 ohms)
Setting range: 1 FT to 30 FT (feet)
Rear (Surrond)
Rated: 38 W + 38 W
(40 Hz - 20 kHz, T.H.D less than 1%, 6 ohms)
Reference: 50 W + 50 W
(40 Hz - 20 kHz, T.H.D less than 10%, 6 ohms)
Setting range: 1 FT to 30 FT (feet)
Center
Rated: 38 W
(40 Hz - 20 kHz, T.H.D less than 1%, 6 ohms)
Reference: 50 W
(40 Hz - 20 kHz, T.H.D less than 10%, 6 ohms)
Setting range: 1 FT to 30 FT (feet)
Subwoofer
Rated: 38 W
(40 Hz - 20 kHz, T.H.D less than 1%, 6 ohms)
Reference: 50 W
(40 Hz - 20 kHz, T.H.D less than 10%, 6 ohms)
Setting range: 1 FT to 30 FT (feet)
Total harmonic distortion 0.2% (10 W, 1 kHz, 6 ohms, DIN AUDIO,
Front)
Input/output
Input
AUDIO VIDEO 1 IN, AUDIO VIDEO 2 IN:
370 mV (47 kohms)
OPTICAL IN VIDEO 1, OPTICAL IN VIDEO 2:
accept linear PCM signals and Dolby Digital
and DTS surround bitstream (32 kHz,
44.1 kHz, 48 kHz, and 96 kHz)
VIDEO VIDEO 1 IN, VIDEO VIDEO 2 IN:
1 Vp-p (75 ohms, unbalanced)
Output
AUDIO VIDEO 1 OUT: 350 mV (47 kohms)
OPTICAL OUT
VIDEO VIDEO 1 OUT, VIDEO OUT:
1 Vp-p (75 ohms, unbalanced)
S-VIDEO OUT
Y output: 1 Vp-p (75 ohms, sync negative)
C output: 0.286 Vp-p
FRONT SPEAKERS: accept speakers of
6 ohms
SURROUND SPEAKERS: accept speakers
of 6 ohms
CENTER SPEAKER: accept speakers of
6 ohms
SUB WOOFER terminal: 6 ohms
SUB WOOFER jack: 1 V
PHONES (mini jack): accepts headphones of
32 phms or more
General
Power requirements
120 V AC, 60 Hz
Power consumption
85 W
Power consumption
4W in standby mode
Dimensions
430 (W) x 70 (H) x 311 (D) mm
(17 x 2 7/
8 x 12
1/
4 in.)
Weight
4.3 kg (9 lbs 8 oz)
Disc player section
Colour system
NTSC/MULTI/PAL (Switchable)
Supported discs
DVD video discs
12 cm (single-sided sigle-layer, single-sided
double-layer, double-sided-doubel layer)
8 cm (single-sided sigle-layer, single-sided
double-layer, double-sided-doubel layer)
Compact discs (CD-DA, CD-R/RW)
12 cm and 8 cm discs
Audio output characteristics
Frequency range: 20 Hz to 20 kHz
Operating conditions
5 °C to 35 °C (41 °F to 95 °F)
Spekaer system
Speakers
Front, Surround, Center: full range, 100 mm
(4 in.), bass reflex type
Subwoofer: 200 mm (77/
8 in.), bass reflex type
Impedance
6 ohms
Maximum input power
55 W (peak)
Dimensions (W x H x D)
SX-F90 (Front): 115 x 153 x 138 mm
(4 5/
8 x 6
1/
8 x 5
1/
2 in.)
SX-R90 (Surround): 115 x 153 x 138 mm
(4 5/
8 x 6
1/
8 x 5
1/
2 in.)
SX-C90 (Center): 153 x 115 x 138 mm
(6 1/
8 x 4
5/
8 x 5
1/
2 in.)
TS-W90 (Subwoofer): 180 x 335 x 390 mm
(7 1/
8 x 13
1/
4 x 15
3/
8 in.)
Weight
SX-F90 (Front): 1 kg (2 lbs 30 z)
SX-R90 (Surround): 0.8 kg (1 lbs 120 z)
SX-C90 (Center): 1 kg (2 lbs 30 z)
TS-W90 (Subwoofer): 4.9 kg (10 lbs 130 z)
· Design and specifications are subject to change without notice.
· Manufactured under license from Dolby Laboratories. "Dolby", "Pro Logic"
and the double-D symbol are trademarks of Dolby Laboratories. Confi-
dential unpublished works. ©1992-1997 Dolby Laboratories. All right re-
served.
· Manufactured under license from Digital Theatre Systems, Inc. US Pat.
No. 5,451,942 and other worldwide patents issued and pending. "DTS"
and "DTS Digital Surround" are trademarks of Digital Theatre Systems,
Inc. ©1996 Digital Theatre Systems, Inc. All right reserved.
SPECIFICATIONS -2/2
-5-
PROTECTION OF EYES FROM LASER BEAM DURING SERVICING -1/1
This set employs laser. Therefore, be sure to follow carefully the instructions below
when servicing.
WARNING!
WHEN SERVICING, DO NOT APPROACH THE LASER EXIT
WITH THE EYE TOO CLOSELY. IN CASE IT IS NECESSARY
TO CONFIRM LASER BEAM EMISSION.
BE SURE TO OBSERVE FROM A DISTANCE OF MORE THAN
30cm FROM THE SURFACE OF THE OBJECTIVE LENS ON
THE OPTICAL PICK-UP BLOCK.
Caution: Invisible laser radiation when open
and interlocks defeated avoid exposure to
beam.
Advarsel: Usynlig laerståling ved åbning, når
sikkerhedsafbrydere er ude af funktion.
Undgå udsættelse for stråling.
VAROITUS!
Laiteen Käyttäminen muulla kuin tässä käyttöohjeessa
mainitulla tavalla saataa altistaa käyt-täjän turvallisuusluokan
1 ylittävälle näkymättömälle lasersäteilylle.
VARNING!
Om apparaten används på annat sätt än vad som specificeras i
denna bruksanvising, kan användaren utsättas fö r osynling
laserstrålning, som överskrider gränsen för laserklass 1.
CAUTION
Use of controls or adjustments or performance of procedures other
than those specified herin may result in hazardous radiation
exposure.
ATTENTION
L'utillisation de commandes, réglages ou procédures autres que
ceux spécifiés peut entraîner une dangereuse exposition aux
radiations.
ADVARSEL!
Usynlig laserståling ved åbning, når sikkerhedsafbrydereer ude
af funktion. Undgå udsættelse for stråling.
This Compact Disc player is classified as a CLASS 1 LASER
product.
The CLASS 1 LASER PRODUCT label is located on the rear
exterior.
CLASS 1
LASER PRODUCT
KLASSE 1
LASER PRODUKT
LUOKAN 1
LASER LAITE
KLASS 1
LASER APPARAT