JVC TH-P5B User manual

SERVICE MANUAL
COPYRIGHT © 2008 Victor Company of Japan, Limited No.MB512<Rev.002>
2008/7
DVD DIGITAL CINEMA SYSTEM
MB512<Rev.002>20087SERVICE MANUAL
TH-P5B, TH-P5E, TH-P5EN, TH-P5EV,
TH-P3B, TH-P3E, TH-P3EN, TH-P3EV,
TH-G10B, TH-G10E, TH-G10EN, TH-G10EV
COPYRIGHT © 2008 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
(Only for TH-P5/TH-G10)
TH-P3/TH-G10TH-P5
SP-WP5
XV-THP5
SP-THP5C
SP-THP5S SP-THP5F
XV-THP3/XV-THG10
SP-WP5/
SP-THG10W
SP-THP3C/SP-THG10C
SP-THP3F/
SP-THG10F
SP-THP3S/
SP-THG10S

1-2 (No.MB512<Rev.002>)
SPECIFICATION
Center unit (XV-THP5/XV-THP3/XV-THP10)
Subwoofer (SP-WP5/SP-THG10W)
Audio section 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.
Video section Video System PAL
Horizontal Resolution 500 lines
Signal-to-Noise Ratio 64 dB (Composite signal when "RGB" is selected)
Video output level Composite 1.0 V(p-p)/75 Ω
Y 1.0 V(p-p)/75 Ω
C 0.3 V(p-p)/75 Ω
RGB 0.7 V(p-p)/75 Ω
Only for XV-THP5 Component-Y 1.0 V(p-p)/75 Ω
Component-PB/PR 0.7 V(p-p)/75 Ω
USB storage USB specification Compatible with the USB 2.0 Full-Speed
Compatible device Mass Storage Class
Compatible file system FAT16, FAT32
Bus power supply Max. 500 mA
Tuner section Tuning Range FM 87.50 MHz to 108.00 MHz
AM (MW) 522 kHz to 1 629 kHz
General Power Requirements AC 230 V , 50 Hz
Power Consumption 60 W (at operation)
1.4 W (in standby mode)
Dimensions (W ×H ×D) 435 mm ×70 mm ×308 mm
Mass 3.0 kg
Type Bass-Reflex Type
Speaker 16 cm cone ×1
Power Handling Capacity 100 W
Impedance 4 Ω
Frequency Range 35 Hz to 200 Hz
Sound Pressure Level 75 dB/W·m
Dimensions (W ×H ×D) 129 mm ×284 mm ×337 mm
Mass 3.1 kg

(No.MB512<Rev.002>)1-3
Satellite speakers (For TH-P5)
Satellite speakers (For TH-P3/TH-G10)
Designs and specifications are subject to change without notice.
Front speakers (SP-THP5F) Type 3-Way Bass-Reflex Type (Magnetically-shielded Type)
Speaker 11.5 cm cone ×1
4 cm cone ×1
1.5 cm cone ×1
Power Handling Capacity 40 W
Impedance 3 Ω
Frequency Range 60 Hz to 20 000 Hz
Sound Pressure Level 82 dB/W·m
Dimensions (W ×H ×D) 146 mm ×246.5 mm ×208 mm
Mass 2.2 kg each
Center speaker (SP-THP5C) Type 1-Way Bass-Reflex Type (Magnetically-shielded Type)
Speaker 6.5 cm cone ×2
Power Handling Capacity 100 W
Impedance 4 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 79 dB/W·m
Dimensions (W ×H ×D) 250 mm ×85 mm ×91 mm
Mass 0.82 kg
Surround speakers (SP-THP5S) Type 1-Way Bass-Reflex Type
Speaker 6.5 cm cone ×1
Power Handling Capacity 40 W
Impedance 3 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 72 dB/W·m
Dimensions (W ×H ×D) 79.5 mm ×147 mm ×88 mm
Mass 0.51 kg each
Front speakers
(SP-THP3F/SP-THG10F)
Type 1-Way 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 20 000 Hz
Sound Pressure Level 75 dB/W·m
Dimensions (W ×H ×D) 92 mm ×99 mm ×95.5 mm
Mass 0.45 kg each
Center speaker
(SP-THP3C/SP-THG10C)
Type 1-Way 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 20 000 Hz
Sound Pressure Level 76 dB/W·m
Dimensions (W ×H ×D) 92 mm ×99 mm ×95.5 mm
Mass 0.45 kg
Surround speakers
(SP-THP3S/SP-THG10S)
Type 1-Way Bass-Reflex Type
Speaker 6.5 cm cone ×1
Power Handling Capacity 40 W
Impedance 3 Ω
Frequency Range 90 Hz to 20 000 Hz
Sound Pressure Level 72 dB/W·m
Dimensions (W ×H ×D) 92 mm ×99 mm ×95.5 mm
Mass 0.48 kg each

1-4 (No.MB512<Rev.002>)
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

(No.MB512<Rev.002>)1-5
1.5 Preventing static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.6 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a
time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible
wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.
1M
Conductive material
(conductive sheet) or iron palate
(caption)
Anti-static wrist strap
Solder short

1-6 (No.MB512<Rev.002>)
1.8 Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
REPRODUCTION AND POSITION OF LABELS and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
WARNING LABEL and PRINT

(No.MB512<Rev.002>)1-7
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 top cover
(See Fig.1 and 2)
(1) Remove the two screws Aattaching the top cover of both
side. (See Fig.1)
(2) Remove the five screws Battaching the top cover of rear
side. (See Fig.2)
Fig.1
Fig.2
A
B

1-8 (No.MB512<Rev.002>)
3.1.2 Removing the front panel assembly
(See fig.3 to 5)
(1) Remove the three screws Cattaching the front panel as-
sembly from bottom side. (See Fig.3)
(2) Remove the screw Dattaching the wire to power supply
board. (See Fig.5)
(3) Release the hook aof bottom side and hook bof both side
of front panel assembly. (See Fig.4 and 5)
Fig.3
Fig.4
Fig.5
C
a
b
D
CN101
CN421
CN422

(No.MB512<Rev.002>)1-9
3.1.3 Removing the power supply board
(See Fig.6)
CAUTION:
When remove the power supply board, do not touch the
capacitor (C905) because it keep voltage.
(1) Disconnect the parallel wires from connectors CN101,
CN421 and CN422 on the main board.
(2) Disconnect the power cord connector CN901 on the power
supply board.
(3) Remove the four screws Eattaching the power supply
board.
(4) Release the power supply board from fastener.
Fig.6
CN901
fastener
CN401
CN403
CN404 C905
EE
E

1-10 (No.MB512<Rev.002>)
3.1.4 Removing the DVD mechanism assembly
(See Fig.7 and 8)
(1) Disconnect the card wires from connector CN405, CN411,
CN412, CN413 and CN414 of main board. (See Fig.7)
(2) Remove the two screws Fattaching the DVD mechanism
assembly from bottom cover. (See Fig.8)
(3) Press the hook cand slide out the DVD mechanism for di-
rection the arrow. (See Fig.8)
Fig.7
Fig.8
CN414
CN413
CN411
CN412
CN405
c
F

(No.MB512<Rev.002>)1-11
3.1.5 Removing the fan
(See Fig.9)
(1) Disconnect the connector CN416 of main board.
(2) Remove the two screws Gattaching the fan to bottom cov-
er.
Fig.9
3.1.6 Removing the tuner pack
(See Fig.10 and 11)
(1) Disconnect the card wire from connector CN652 of video
board. (See Fig.10)
(2) Remove the two screws Hattaching the tuner pack from
rear panel. (See Fig.11)
Fig.10
Fig.11
G
CN416
CN652
H

1-12 (No.MB512<Rev.002>)
3.1.7 Removing the video board
(See Fig.12 and 13)
(1) Disconnect the card wire from connector CN601 and
CN651. (See Fig.12)
(2) Remove the two screws Jattaching the video board. (See
Fig.12)
(3) Remove the three screws Kattaching the video board from
rear panel. (See Fig.13)
Fig.12
Fig.13
J
CN651CN601
K

(No.MB512<Rev.002>)1-13
3.1.8 Removing the main board
(See Fig.14 and 15)
(1) Remove the four screws Lattaching the main board. (See
Fig.14)
(2) Remove the two screws Mattaching the main board from
rear panel. (See Fig.15)
Fig.14
Fig.15
L
M

1-14 (No.MB512<Rev.002>)
3.1.9 Removing the switch board
(See Fig.16)
(1) Remove the three screws Nattaching the switch board.
3.1.10 Removing the headphone board
(See Fig.16)
(1) Remove the screw Pattaching the headphone board.
Fig.16
3.1.11 Removing the FL board
(See Fig.17)
(1) Remove the three screws Qattaching the FL board.
Fig.17
N
P
Q

(No.MB512<Rev.002>)1-15
3.2 DVD mechanism
3.2.1 Removing the traverse mechanism
(See Fig.1 to 7)
(1) Remove the two screws Aattaching the tramecha holder
from top side of DVD mechanism assembly. (See Fig.1)
(2) Remove the two screws Battaching the DVD module
board. (See Fig.2)
(3) Remove the one screw Cattaching the tramecha holder.
(See Fig.3)
(4) Through the DVD module board from mecha tramecha
holder and take out the mecha holder. (See Fig.4)
(5) Remove the four screws Dattaching the traverse mecha-
nism. (See Fig.5)
(6) Solder the solder part of DVD pick up. (See Fig.6)
(7) Disconnect the card wire from CN101 and CN201 on the
DVD module board. (See Fig. 7)
Caution:
• Solder the short land section on the DVD pickup before dis-
connecting the card wire from the connector on the DVD
pickup. If the card wire is disconnected without attaching sol-
ders, the pickup may be destroyed by static electricity.
• When attaching the DVD pickup, be sure to remove solders
from the short land section after connecting the card wire to
the connector on the DVD pickup.
Fig.1
Fig.2
Fig.3
A
A
Clamper base
DVD mechanism assembly
B
B
DVD mechanism assembly
DVD module board
DVD mechanism assembly
C
DVD module board

1-16 (No.MB512<Rev.002>)
Fig.4
Fig.5
Fig.6
Fig.7
DVD module board
Tramecha holde
r
DVD mechansim assembly
DD
Traverse mechanism assembly
DVD mechanism assembly
Solder short
CN101
CN201
DVD module board

(No.MB512<Rev.002>)1-17
3.2.2 Removing the pickup assembly
(See Fig.8 to 12)
(1) Remove the two rod springs pressing the guide shaft. (See
Fig.8)
(2) Remove the screw Eand Fattaching the spring holder.
(See Fig.9)
(3) Remove the read screw from traverse mechanism assem-
bly. (See Fig.10)
Caution:
When remove the lead screw, do not loss the middle
gear. (See Fig.11 and 12)
(4) Remove the bar spring pressing the shaft. (See Fig.11)
(5) Take out the pickup assembly from traverse mechanism
chassis by order. (See Fig.12)
Fig.8
Fig.9
Fig.10
Fig.11
Fig.12
ROD SPRING ROD SPRING
EF
Spring holder
Lead screw
Middle gear
(T.TABLE)
HOOK
(SHAFT)
(BAR SPRING)
order 1
order 2 order 3

1-18 (No.MB512<Rev.002>)
3.2.3 Removing the feed motor assembly
(See Fig.13)
(1) Remove the one screw Gattaching the feed motor assem-
bly.
(2) Remove the feed motor wires from solder part of spindle
motor board.
Fig.13
3.2.4 Removing the spindle motor assembly
(See Fig.14)
(1) Remove the three screws Hattaching the spindle motor
from spindle motor board.
Fig.14
Lead screw
Middle gear
Splder part
G
Spindle motor
H

(No.MB512<Rev.002>)1-19
3.2.5 Removing the tray assembly
(See Fig.15 and 16)
(1) Remove the two screws Jattaching the clamper base.
(See Fig.15)
(2) Remove the one screw Kattaching the shaft guide from
bottom side. (See Fig.15)
(3) Remove the two screws Lattaching the shaft guide from
top side. (See Fig.16)
Caution:
When attach the tray assembly, boss of loading sub assembly
should attach to guide of bottom side at tray assembly. (See
Fig.16)
Fig.15
Fig.16
J
order 1
order 2
clamper base
K
[bottom side]
L

1-20 (No.MB512<Rev.002>)
SECTION 4
ADJUSTMENT
4.1 ATTENTION IN SERVICE OF DVD SECTION
(1) When pickup, Flash ROM ,DVD module board were changed, initialize EEPROM by all means.
(2) When full initialization was excuted, excute learning with a DVD test disc by all means.
Test disc : VT-501, VT-502
Learning method : It is adjusted automatically by normal playback of a DVD disc.
4.2 TEST MODE
4.2.1 OUTLINE
To the set which is using the DVD module, in order to perform common correspondence in production,
TEST mode is prepared.
Table 1 is corresponded in TEST mode.
4.2.2 SET OPERATE
TEST mode performs correspondence by operation specially so that a user cannot enter.
* TEST MODE start should be press PLAY key and POWER key of main unit together and keep condition, connect AC.
* After set up TEST MODE, mode select by MENU key.
The changes to the key in TEST mode are shown in Fig. 1.
MODE CONTENTS
The destination, a region, study
state check mode
NORMAL initialize, FULL initialize
Device key write (CPPM, CPRM)
Device key check sum indication
mode
Micon version indication mode
FL all on mode
FRONT END check mode
Indication the distination code, region number and study state fo DVD micon.
Mode of DVD micon initialize. Initialize has NORMAL initialize and FULL initialize.
NORMAL initialize : Initialize the value of user setting item, like a indication contents of
SETUP OSD.
FULL initialize : Plus the contents of study which are carrying out the memory by
FRONT END for lead shortening are initialized for NORMAL initialize
contents.
For device key writing mode. Device key have CPPM(DVD Audio) and CPRM(VR).
Indication the wrote device key check sum. Indication this value, it can check the device key was
wrote or not.
Indication System micon, DVD micon, other ROM version. With a set, correspondence and the
contents of correspondence shall be individual, and shall be decided.
Mode of FL (LCD) all on. With a set, correspondence and the contents of correspondence shall be
individual, and shall be decided.
Mode of relation of FRONT END.
Table 1. Contents corresponding to TEST mode.
The destination, a region,
study state indication mode
Device key check sum
indication mode
Micon version
indication mode
FL all on
mode
FRONT END
check mode
PLAY+POWER+AC
MENU key
MENU key MENU key
MENU key MENU key MENU key
NORMAL
initialize
Device key
writing
FULL
initialize
PAUSE key
STOP key
4sec. press PLAY key
(*1) : Shift from destination, region and study state indication mode to NORMAL initialize, FULL initialize and device
writing mode should only can main unit key.
Fig.1 Change to TEST MODE and key