JVC TH-L1A User manual

SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.MB623
2007/7
DIGITAL MEDIA SYSTEM
MB62320077SERVICE MANUAL
TH-L1A, TH-L1US, TH-L1UB,
TH-L1UJ, TH-L1UG, TH-L1UN
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
AX-THL1
SP-THL1W
SP-THL1F
SP-THL1F
SP-THL1C
SP-THL1S
SP-THL1S
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1-2 (No.MB623)
SPECIFICATION
Center unit
* Corresponding to Linear PCM Dolby Digital and DTS Digital Surround (with sampling frequency - 32 kHz 44.1 kHz 48 kHz)
Output power Front/Surround 40 W per channel RMS at 3 Ωat 1 kHz with 10% total harmonic distortion.
Center 100 W RMS at 4 Ωat 1 kHz with 10% total harmonic distortion.
Subwoofer 100 W RMS at 4 Ωat 30 Hz with 10% total harmonic distortion.
Audio section Analog Input VIDEO 1 IN,
VIDEO 2 IN,
VIDEO 3
500 mV/50 k Ω
Digital Input* VIDEO 1,
VIDEO 3
-21 dBm to -15 dBm (660 nm ± 30 nm)
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
PAL 0.3 V(p-p)/75 Ω
Component
(Interlace/
Progressive)
Y 1 V(p-p)/75 Ω
PB/PR 0.7 V(p-p)/75 Ω
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 Front and Surround 3 Ωto 16 Ω
Center and Subwoofer 4 Ωto 16 Ω
General
Power Requirements For HongKong AC 220 V , 50 Hz
For Australia AC 240 V , 50 Hz
For other countries AC 110 V - 240 V , 50/60 Hz
Power supply to iPod 5 V/500 mA
Power Consumption 50 W (at operation)
1.5 W (in standby mode)
Dimensions (W ×H ×D) 118 mm ×276 mm ×246 mm
Mass 2.9 kg
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(No.MB623)1-3
Subwoofer (SP-THL1W)
Front speakers (SP-THL1F)
Center speaker (SP-THL1C)
Surround speakers (SP-THL1S)
Designs & specifications are subject to change without notice.
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
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
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
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
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1-4 (No.MB623)
SECTION 1
PRECAUTION
1.1 Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. 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 per-
formed 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 characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which have these special
safety characteristics are identified in the Parts List of Ser-
vice 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 charac-
teristics 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 reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna 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, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent 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, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W 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.).
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 pre-
forming 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)
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
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(No.MB623)1-5
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 Aattaching the SIDE PANEL.
(See Fig.1)
(2) Remove the three screws Battaching the SIDE PANEL.
(See Fig.2)
Fig.1
Fig.2
A
A
BB
B
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1-6 (No.MB623)
3.1.2 Removing the FRONT PANEL assembly
(See Fig.3, 4)
(1) Remove the two screws Cattaching the both side of
FRONT PANEL assembly. (See Fig.3)
(2) Disengage the six hooks aengaged 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
Fig.4
C
hook a
(both side)
CN860
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(No.MB623)1-7
3.1.3 Removing the TOP CHASSIS
(See Fig.5 to 8)
(1) From the back side of main body, remove the two screws
Dattaching 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
Fattaching the TOP CHASSIS. (See Fig.7)
(4) From the front side of main body, remove the three screws
Gattaching the TOP CHASSIS. (See Fig.8)
Fig.5
Fig.6
Fig.7
Fig.8
D
D
E
FF
F
F
G
G
G
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1-8 (No.MB623)
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 Hand three screws Jattaching the
HDMI BOARD assembly. (See Fig.10)
Fig.9
Fig.10
CN901
H
H
J
J
J
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(No.MB623)1-9
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 of the MAIN BOARD as-
sembly. (See Fig.11)
(2) Remove the two screws Kattaching the VIDEO 2 BOARD
assembly. (See Fig.12)
Fig.11
Fig.12
3.1.6 Removing the HEAT SINK
(See Fig.13)
(1) Remove the three screws Lattaching the HEAT SINK.
Fig.13
CN905
K
K
L
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1-10 (No.MB623)
3.1.7 Removing the POWER BOARD assembly
(See Fig.14 to 17)
(1) Remove the four screws Mattaching the POWER BOARD
assembly. (See Fig.14)
(2) Remove the one screw Nattaching the DUMMY BOARD.
(See Fig.15)
(3) Disconnect the connector wires from POWER BOARD as-
sembly connected to connector CN200, CN201 and
CN202 of the MAIN BOARD assembly. (See Fig.16)
(4) Lift up the POWER BOARD assembly with POWER
CORD, and then disconnect the POWER CORD from con-
nector CN101 of the POWER BOARD assembly. (See
Fig.17) Fig.14
Fig.15
Fig.16
Fig.17
M
MM
M
N
CN200
CN201
CN202
CN101
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(No.MB623)1-11
3.1.8 Removing the REAR PANEL
(See Fig.18 to 20)
(1) Disconnect the connector wire from FAN connected to con-
nector CN209 of the MAIN BOARD assembly. (See Fig.18)
(2) Remove the two screws Pattaching the SPEAKER TER-
MINAL. (See Fig.19)
(3) Remove the one screw Qattaching the VIDEO 1 jack. (See
Fig.19)
(4) Remove the one screw Rattaching the AUDIO jack. (See
Fig.19)
(5) Remove the two screws Sattaching the VIDEO jack. (See
Fig.19)
(6) Remove the two screws Tattaching the COMPONENT
jack. (See Fig.19)
(7) Remove the two screws Uattaching the REAR PANEL.
(See Fig.19)
(8) Disengage three hooks bengaged top and bottom side of
REAR PANEL. (See Fig.20) Fig.18
Fig.19
Fig.20
CN209
P
Q
R
S
T
U
U
hook b
(Top side)
(Bottom side)
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1-12 (No.MB623)
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 and CN320 of the MAIN
BOARD assembly. (See Fig.21)
(3) Remove the two screws Vattaching the DSP BOARD as-
sembly. (See Fig.22)
Fig.21
Fig.22
CN203CN204
CN320 CN205
CN206
VV
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(No.MB623)1-13
3.1.10 Removing the MAIN BOARD assembly
(See Fig.23, 24)
(1) Remove the one screw Wattaching the BRACKET
BOARD. (See Fig.23)
(2) Remove the four screws Xattaching the JACK BRACKET.
(See Fig.24)
(3) Remove the one screw Yattaching the MAIN BOARD as-
sembly. (See Fig.24)
(4) Remove the four screws Zattaching the MAIN BOARD as-
sembly. (See Fig. 24)
Fig.23
Fig.24
3.1.11 Removing the FRONT BOARD assembly
(See Fig.25)
(1) Remove the eight screws A' attaching the FRONT BOARD
assembly.
Fig.25
W
X
X
Z
Z
Y
Z
Z
A'
A'
A'
A'
A'
A'
A'
A'
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1-14 (No.MB623)
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
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
MODE NAME CODE FUNCTION
COLD START POWER + STOP + 0 2 times receive the code when P.OFF condition, "COLD SET" indicate on FL display
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.
ALL FL lighting POWER + STOP + 1 Receive the code when P.ON condition,
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.
Temprature display POWER + STOP + 2 POWER and AMP part temprature is displayed
Error histry POWER + STOP + 3 It is displayed safety condition.
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
Version display POWER + STOP + 10 Receive the code when P.ON condition,
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
Volume down display POWER + STOP + >10 Receive the code when P.ON condition, Indicate volume down cause by safety4.
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(No.MB623)1-15
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(No.MB623)
VPT
Printed in Japan
Victor company of Japan, Limited
Audio/Video Systems category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
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3-1
PARTS LIST
* All printed circuit boards and its assemblies are not available as service parts.
- Contents -
Exploded view of general assembly and parts list (Block No.M1)
Electrical parts list (Block No.01~04)
Packing materials and accessories parts list (Block No.M3)
(Except TH-L1UJ)
Packing materials and accessories parts list (Block No.M4)
(Only TH-L1UJ)
TH-L1A,TH-L1US,TH-L1UB
TH-L1UJ,TH-L1UG,TH-L1UN
3- 2
3- 6
3-16
3-18
MB623
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3-2
Exploded view of general assembly and parts list
A
B
C
B
D
G
C
a
b
e
f
gh
p
k
Power board Main bo
FL board
D
HDMI board
Wire guard board
Wire stoper board
Block No.
MM
M
1
58
60
59
61
66
63
67
48
50
51
49
77
45
44
43
76
2
24
2
5
2
5
31
84
19
20
14
14
14
15
62
2
1
3
4
4
5
5
7
8
8
9
10
11
12
13
13
69
72
72
70
73
16
17
17
86
85
87
88 43
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3-3
A
D
E
G
G
H
H
E
F
F
b
c
d
b
e
f
h
j
m
m
n
n
p
p
j
k
k
c
d
a
Main board
DSPboard
Digital in board
HDMI board
Wire stoper board
M
M
g
62
65
64
65
55
55 54
57
55
56
56
52
52
53
50
51
49
77
46
47
42
74
44
76
35
41
36
36
37
38
39
30
29
78
79
82
80
28
81
24
25
25
26
27
27
83
32
33
34
40
75
23
21
22
22
71
71
68
85
18
4
3
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3-4
General Assembly
Block No. [M][1][M][M]
 Symbol No. Part No. Part Name Description Local
1 GV10364-001A FRONT PANEL
2 E69897-002 CUSHION (x2)
3 GV20472-005A FRONT LENS
4 GV40745-001A DOOR SPRING (x2)
5 QYSDSF2608ZA TAP SCREW M2.6 x 8mm(x2)
6 GV31015-001A JACK DOOR
7 GV31016-001A POWER BUTTON
8 GV31017-001A RING LENS (x2)
9 GV31018-001A LENS HOLDER
10 GV31076-001A CTRL LEN HOLDER
11 GV31074-001A VOL.BTTN.ASSY
12 GV31075-001A CNTL.BTTN.ASSY
13 GV40743-001A PIVOT HOLDER (x2)
14 QYSDSF2608ZA TAP SCREW M2.6 x 8mm(x8)
15 GV30349-078A SPACER
16 GV30349-079A FL SPACER (x2)
17 GV40742-001A LED HOLDER (x2)
18 GV31028-001A H/SINK BRACKET
19 GV10367-001A BOTTOM CHASSIS
20 QYSBSG3010ZA TAP SCREW M3 x 10mm
21 QYSDSG3006ZA TAP SCREW M3 x 6mm
22 QYSBSG3010ZA TAP SCREW M3 x 10mm(x4)
23 GV40744-001A iPod HOLDER
24 GV31024-001A JACK BRACKET A
25 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
26 GV31025-001A JACK BRACKET B
27 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
28 LV30225-0H8A SPECER
29 LV30227-048A SPACER
30 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
31 QYSBSG3010ZA TAP SCREW M3 x 10mm
32 GV20471-003A REAR PANEL A
32 GV20471-004A REAR PANEL US,UG,UN
32 GV20471-005A REAR PANEL UB
32 GV20471-006A REAR PANEL UJ
33 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
34 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
35 QYSDSG3006ZA TAP SCREW M3 x 6mm
36 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
37 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
38 QYSBSG3010ZA TAP SCREW M3 x 10mm
39 QYSBSG3010ZA TAP SCREW M3 x 10mm
40 QYSBSG3010ZA TAP SCREW M3 x 10mm
41 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
 42 QZW0033-001 STRAIN RELIEF
43 QYSBSG3010ZA TAP SCREW M3 x 10mm(x3)
44 QYSBSG3010ZA TAP SCREW M3 x 10mm
45 QYSBSG3010ZA TAP SCREW M3 x 10mm
46 GV31071-001A HEAT SINK
47 QYSBSG3012ZA TAP SCREW M3 x 12mm(x3)
48 GV31026-001A BASE SHIELD
49 GV31027-001A TOP SHIELD
50 QYSBSG3010ZA TAP SCREW M3 x 10mm
51 GV30349-050A SPACER
52 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
53 QYSDSP3006ZA SCREW M3 x 6mm(x3)
54 GV10368-001A TOP CHASSIS
55 QYSBSG3010ZA TAP SCREW M3 x 10mm(x6)
56 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
57 QYSBSG3010ZA TAP SCREW M3 x 10mm
58 GV10369-001A TOP COVER
59 QYSBSG3010ZA TAP SCREW M3 x 10mm
60 QYSBSG3010ZA TAP SCREW M3 x 10mm
61 GV10365-001A SIDE COVER(L)
62 GV10366-001A SIDE COVER(R)
63 QYSBSG3010ZA TAP SCREW M3 x 10mm(x3)
64 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
65 QYSBSG3010ZA TAP SCREW M3 x 10mm(x2)
66 QYSBSG3010ZA TAP SCREW M3 x 10mm
67 QYSBSG3010ZA TAP SCREW M3 x 10mm
68 QYSBSG3010ZA TAP SCREW M3 x 10mm
69 QYSBSG3010ZA TAP SCREW M3 x 10mm
70 QYSBSG3010ZA TAP SCREW M3 x 10mm
71 GV40313-002A FELT SPACER (x2)
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