JVC THL-1-A Service manual

SERVICE MANUAL

DIGITAL MEDIA SYSTEM

MB62320077SERVICE MANUAL

TH-L1A, TH-L1US, TH-L1UB,

TH-L1UJ, TH-L1UG, TH-L1UN

SP-THL1W

SP-THL1F

SP-THL1F

SP-THL1S

SP-THL1S

SP-THL1C

AX-THL1

COPYRIGHT © 2007 Victor Company of Japan, Limited

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
Lead free solder used in the board (material : Sn-Cu, melting point : 230 Centigrade)

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

COPYRIGHT © 2007 Victor Company of Japan, Limited

No.MB623

2007/7

SPECIFICATION

Center unit

Output power Front/Surround 40 W per channel RMS at 3 Ω at 1 kHz with 10% total harmonic distortion.

Center 100 W RMS at 4 Ω at 1 kHz with 10% total harmonic distortion.
Subwoofer 100 W RMS at 4 Ω at 30 Hz with 10% total harmonic distortion.

Audio section Analog Input VIDEO 1 IN,

VIDEO 2 IN,
VIDEO 3

Digital Input* VIDEO 1,

VIDEO 3

VIDEO 2 0.5 V(p-p)/75 Ω

Video section Video System NTSC/PAL

Horizontal Resolution 500 lines

Signal-to-Noise Ratio 60 dB

Video output level Composite 1 V(p-p)/75 Ω

S-video-Y 1 V(p-p)/75 Ω
S-video-C NTSC 0.286 V(p-p)/75 Ω

Component
(Interlace/
Progressive)

HDMI HDMI Input VIDEO 1 IN, VIDEO 2 IN

HDMI Output MONITOR OUT

Max capability 1920 × 1080 at 60 Hz / Deep color [4:4:4] / color depth 24 bit.

USB storage USB specification Compatible with USB 2.0 Full Speed

Compatible device Mass Storage Class

Compatible file system FAT16, FAT32

Bus power supply 5 V/500 mA

Speaker impedance

General

* Corresponding to Linear PCM Dolby Digital and DTS Digital Surround (with sampling frequency - 32 kHz 44.1 kHz 48 kHz)

Front and Surround 3 Ω to 16 Ω
Center and Subwoofer 4 Ω to 16 Ω

Power Requirements

Power supply to iPod 5 V/500 mA

Power Consumption 50 W (at operation)

Dimensions (W × H × D) 118 mm × 276 mm × 246 mm

Mass 2.9 kg

For HongKong

For Australia AC 240 V , 50 Hz

For other countries

500 mV/50 k Ω

-21 dBm to -15 dBm (660 nm ± 30 nm)

PAL 0.3 V(p-p)/75 Ω
Y 1 V(p-p)/75 Ω
PB/PR 0.7 V(p-p)/75 Ω

AC 220 V , 50 Hz

AC 110 V - 240 V , 50/60 Hz

1.5 W (in standby mode)

1-2 (No.MB623)

Subwoofer (SP-THL1W)

Type 1-way Bass-Reflex Type (Magnetically-Shielded Type)

Speaker 16 cm cone × 1

Power Handling Capacity 100 W

Impedance 4 Ω

Frequency Range 30 Hz to 1.5 kHz

Sound Pressure Level 84 dB/W•m

Dimensions (W × H × D) 266 mm × 270 mm × 157 mm

Mass 2.9 kg

Front speakers (SP-THL1F)

Type Full-Range Bass-Reflex Type (Magnetically-shielded Type)

Speaker 6.5 cm cone × 1

Power Handling Capacity 40 W

Impedance 3 Ω

Frequency Range 90 Hz to 20 kHz

Sound Pressure Level 77 dB/W•m

Dimensions (W × H × D) 100 mm × 104 mm × 105 mm

Mass 0.42 kg each

Center speaker (SP-THL1C)

Type Full-Range Bass-Reflex Type (Magnetically-shielded Type)

Speaker 6.5 cm cone × 1

Power Handling Capacity 100 W

Impedance 4 Ω

Frequency Range 90 Hz to 20 kHz

Sound Pressure Level 77 dB/W•m

Dimensions (W × H × D) 100 mm × 104 mm × 105 mm

Mass 0.42 kg

Surround speakers (SP-THL1S)

Type Full-Range Bass-Reflex Type

Speaker 6.5 cm cone × 1

Power Handling Capacity 40 W

Impedance 3 Ω

Frequency Range 90 Hz to 20 kHz

Sound Pressure Level 76 dB/W•m

Dimensions (W × H × D) 100 mm × 104 mm × 105 mm

Mass 0.5 kg each

Designs & specifications are subject to change without notice.

(No.MB623)1-3

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purpos­es. For continued protection, no changes should be made
to the original design unless authorized in writing by the
manufacturer. Replacement parts must be identical to
those used in the original circuits. Services should be per­formed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should
not be made. Any design alterations or additions will void
the manufacturers warranty and will further relieve the
manufacture of responsibility for personal injury or property
damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteris­tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us­ing replacement components rated for higher voltage, watt­age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser­vice Manual. Electrical components having such features
are identified by shading on the schematics and by ( ) on
the Parts List in the Service Manual. The use of a substitute
replacement which does not have the same safety charac­teristics as the recommended replacement parts shown in
the Parts List of Service Manual may create shock, fire, or
other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from
live parts, high temperature parts, moving parts and/or
sharp edges for the prevention of electric shock and fire
hazard. When service is required, the original lead routing
and dress should be observed, and it should be confirmed
that they have been returned to normal, after reassem­bling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isola­tion check on the exposed metal parts of the product (an­tenna terminals, knobs, metal cabinet, screw heads,
headphone jack, control shafts, etc.) to be sure the product
is safe to operate without danger of electrical shock.Do not
use a line isolation transformer during this check.

• Plug the AC line cord directly into the AC outlet. Using a
"Leakage Current Tester", measure the leakage current
from each exposed metal parts of the cabinet, particular­ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur­rent must not exceed 0.5mA AC (r.m.s.).

• Alternate check method
Plug the AC line cord directly into the AC outlet. Use an

AC voltmeter having, 1,000Ω per volt or more sensitivity
in the following manner. Connect a 1,500Ω 10W resistor
paralleled by a 0.15µF AC-type capacitor between an ex-

posed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC

voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a return
path to the chassis, and measure the AC voltage across
the resistor. Now, reverse the plug in the AC outlet and
repeat each measurement. Voltage measured any must
not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5
mA AC (r.m.s.).

AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)

0.15 F AC TYPE

Place this
probe on

1500 10W

Good earth ground

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal responsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical components are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution

Burrs formed during molding may be left over on some parts
of the chassis.
Therefore, pay attention to such burrs in the case of pre­forming repair of this system.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen
printed side (parts side) of the PWB diagrams, the parts that are
printed over with black such as the resistor ( ), diode ( )
and ICP ( ) or identified by the " " mark nearby are critical
for safety. When replacing them, be sure to use the parts of the
same type and rating as specified by the manufacturer.
(This regulation dose not Except the J and C version)

each exposed
metal part.

1-4 (No.MB623)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

SECTION 3

DISASSEMBLY

3.1 Main body

3.1.1 Removing the SIDE PANEL
(See Fig.1, 2)

(1) Remove the nine screws A attaching the SIDE PANEL.

(See Fig.1)

(2) Remove the three screws B attaching the SIDE PANEL.

(See Fig.2)

A

A

Fig.1

BB

B

Fig.2

(No.MB623)1-5

3.1.2 Removing the FRONT PANEL assembly
(See Fig.3, 4)

(1) Remove the two screws C attaching the both side of

FRONT PANEL assembly. (See Fig.3)

(2) Disengage the six hooks a engaged both side of FRONT

PANEL assembly. (See Fig.3)

(3) Disconnect the card wire from MAIN BODY connected to

connector CN860

of the FL BOARD assembly. (See Fig.4)

Fig.3

C

hook

a

(both side)

CN860

Fig.4

1-6 (No.MB623)

3.1.3 Removing the TOP CHASSIS

(See Fig.5 to 8)

(1) From the back side of main body, remove the two screws

D attaching the TOP CHASSIS. (See Fig.5)

(2) From the top side of main body, remove the one screw E

attaching the TOP CHASSIS. (See Fig.6)

(3) From the right side of main body, remove the four screws

F attaching the TOP CHASSIS. (See Fig.7)

(4) From the front side of main body, remove the three screws

G attaching the TOP CHASSIS. (See Fig.8)

F

F

D

D

Fig.5

Fig.6

E

F

F

Fig.7

G

G

G

Fig.8

(No.MB623)1-7

3.1.4 Removing the HDMI assembly
(See Fig.9, 10)

(1) Disconnect the card wire from HDMI assembly connected

to connector CN901 of the VIDEO 2 BOARD assembly.
(See Fig.9)

(2) Remove the two screws H and three screws J attaching the

HDMI BOARD assembly. (See Fig.10)

CN901

Fig.9

H

J

J

J

Fig.10

H

1-8 (No.MB623)

3.1.5 Removing the VIDEO 2 BOARD assembly

(See Fig.11, 12)

(1) Disconnect the card wire from VIDEO 2 BOARD assembly

connected to connector CN905
sembly. (See Fig.11)

(2) Remove the two screws K attaching the VIDEO 2 BOARD

assembly. (See Fig.12)

3.1.6 Removing the HEAT SINK

(See Fig.13)

(1) Remove the three screws L attaching the HEAT SINK.

of the MAIN BOARD as-

CN905

Fig.11

K

K

Fig.12

Fig.13

L

(No.MB623)1-9

3.1.7 Removing the POWER BOARD assembly
(See Fig.14 to 17)

(1) Remove the four screws M attaching the POWER BOARD

assembly. (See Fig.14)

(2) Remove the one screw N attaching the DUMMY BOARD.

(See Fig.15)

(3) Disconnect the connector wires from POWER BOARD as-

sembly connected to connector CN200

of the MAIN BOARD assembly. (See Fig.16)

CN202

(4) Lift up the POWER BOARD assembly with POWER

CORD, and then disconnect the POWER CORD from con­nector CN101
Fig.17)

of the POWER BOARD assembly. (See

, CN201 and

M

M

M

M

Fig.14

N

Fig.15

CN201

1-10 (No.MB623)

CN202

Fig.16

Fig.17

CN200

CN101

3.1.8 Removing the REAR PANEL

(See Fig.18 to 20)

(1) Disconnect the connector wire from FAN connected to con-

nector CN209

(2) Remove the two screws P attaching the SPEAKER TER-

MINAL. (See Fig.19)

(3) Remove the one screw Q attaching the VIDEO 1 jack. (See

Fig.19)

(4) Remove the one screw R attaching the AUDIO jack. (See

Fig.19)

(5) Remove the two screws S attaching the VIDEO jack. (See

Fig.19)

(6) Remove the two screws T attaching the COMPONENT

jack. (See Fig.19)

(7) Remove the two screws U attaching the REAR PANEL.

(See Fig.19)

(8) Disengage three hooks b engaged top and bottom side of

REAR PANEL. (See Fig.20)

of the MAIN BOARD assembly. (See Fig.18)

CN209

Fig.18

P

U

(Top side)

Q

R

S

U

T

Fig.19

hook b

Fig.20

(Bottom side)

(No.MB623)1-11

3.1.9 Removing the DSP BOARD assembly
(See Fig.21, 22)

(1) Disconnect the card wire from DSP BOARD assembly con-

nected to connector CN203, CN204 and CN206 of the
MAIN BOARD assembly. (See Fig.21)

(2) Disconnect the connector wire from DSP BOARD assem-

bly connected to connector CN205
BOARD assembly. (See Fig.21)

(3) Remove the two screws V attaching the DSP BOARD as-

sembly. (See Fig.22)

and CN320 of the MAIN

CN320 CN205

CN203CN204

CN206

Fig.21

VV

Fig.22

1-12 (No.MB623)

3.1.10 Removing the MAIN BOARD assembly

Y

(See Fig.23, 24)

(1) Remove the one screw W attaching the BRACKET

BOARD. (See Fig.23)

(2) Remove the four screws X attaching the JACK BRACKET.

(See Fig.24)

(3) Remove the one screw Y attaching the MAIN BOARD as-

sembly. (See Fig.24)

(4) Remove the four screws Z attaching the MAIN BOARD as-

sembly. (See Fig. 24)

W

Fig.23

3.1.11 Removing the FRONT BOARD assembly

(See Fig.25)

(1) Remove the eight screws A' attaching the FRONT BOARD

assembly.

Z

X

X

Z

A'

A'

Z

Z

Fig.24

A'

A'

A'

A'

A'

A'

Fig.25

(No.MB623)1-13

SECTION 4

ADJUSTMENT

4.1 EXTENTION CABLE

When do the operation check or do the confirm SPECIAL MODE, please use the extention cables connect to Main amp board and
Power supply board.

1. EXTTHL1-7P × 2 pcs

2. EXTTHL1-6P × 1 pc

4.2 SPECIAL MODE

MODE NAME CODE FUNCTION

COLD START POWER + STOP + 0 2 times receive the code when P.OFF condition, "COLD SET" indicate on FL display

ALL FL lighting POWER + STOP + 1 Receive the code when P.ON condition,

Temprature display POWER + STOP + 2 POWER and AMP part temprature is displayed
Error histry POWER + STOP + 3 It is displayed safety condition.

Version display POWER + STOP + 10 Receive the code when P.ON condition,

Volume down display POWER + STOP + >10 Receive the code when P.ON condition, Indicate volume down cause by safety4.

during 3 seconds, after temporaly P.ON operation.
And the indication finished, go to P.OFF mode.
Then COLD START operation should start by AC plug ON/OFF.

1. LED turn on one by one.
STANDBY->VIDEO1->VIDEO2->VIDEO3->iPod->USB->ILLUMINATION

2. FL lights up all of segment.

3. VOLUME control by remocon (VOL+/VOL-), should be high speed mode until P.OFF.

It can use only p.off condition.
There are below kainds.
SAFETY REG, SAFETY IPOD, SPEAKER DC DETECT, POWER TEMPERATURE,
AMP TEMPERATURE, SAFETY LINE, SAFETY HDMI,S AFETY FAN,
SAFETY P.AMP SD,S AFETY P.AMP OTW

1. Indicate Syscon version
Syscon version:"SC ## $$" (##:Sys version,$$:Sys ROM correction)

2. Indicate Unit version
Unit version:"BE %%%%"(%%%%:Unit version)

3. Indicate destination and chip select
Destination, Chip select:"$$ %% "($$:sys destination , %%%:chip select "L1"or"L11")
Each display during 5 seconds temporary.
Curret volume value

1-14 (No.MB623)

SECTION 5

TROUBLESHOOTING

This service manual does not describe TROUBLESHOOTING.

(No.MB623)1-15

Victor company of Japan, Limited
Audio/Video Systems category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MB623)

Printed in Japan

VPT