Jvc XVS 56 BK Service Manual

Page 1

XV-SSGBK/XV-SS7SL

JVB

SERVICE MANUAL

DVD VIDEO PLAYER

XV-856BK / XV-357SL

Area Suffix (XV-$563K)

E ----- Continental europe
EN ------ Northern europe

Area Suffix (XV-$57SL)

E ----- Continental europe
EN ------ Northern europe

a? VIdBEICI] Pil- wom- :t? m %% @flgfi

Each difference point

Model Body color

XV-sseBK Black

XV-857SL Silver
Contents
Safety precautions ------------------------ 1-2 Disassembly method -------------------- 1-6
Preventing static electricity ------------- 1-3 Adjustment method ---------------------- 1-15
Precautions for service ------------------ 1-4 Troubleshooting -------------------------- 1-18
Important for laser products ------------ 1-5 Description of major le ---------------- 1-22

This servioe manual is printed on 100% recycled paper. N 0- A001 9

COPYRIGHT @ 2001 VICTOR COMPANY OF JAPAN, LTD.
Oct. 2001

Page 2

XV-SSGBK/XV-SS7SL

-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 (A) 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 re-assembling.

5. Leakage current check (Electrical shock hazard testing)

After re-assembling 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.

0 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.).

0 Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms per volt or more
sensitivity in the following manner. Connect a 1,500 Q10W resistor paralleled by a 0.1 511 F AC-type capacitor

between an exposed metal part and a known good earth ground. AC VOLTMETER
Measure the AC voltage across the resistor with the AC a (HavinglOOO
voltmeter. ohms/volts,

Move the resistor connection to each exposed metal part, more sen5"'v"y)

particularly any exposed metal part having a return path to
the chassis, and measure the AC voltage across the resistor.

0.1511 F AC TYPE

Now, reverse the plug in the AC outlet and repeat each I Plagethis
pro e on
measurement. Voltage measured any must not exceed 0.75 V 'WV . ~ each exposed

AC (r.m.s.).This corresponds to 0.5 mA AC (r.m.s.). 15009 10W metal part.

Good earth ground

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.

- Warning A 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.

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 (I), diode (-) and ICP (.) or identified by the "A"
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.
(Except the J and C version)

Page 7

XV-SSGBK/XV-857SL

I Removing the servo control board
(see Fig.4)

* Prior to performing the following procedure, remove
the top cover and mechanism assembly.

1.Disconnect the card wire from connector CN201 and
CN202 on the servo control board respectively.

2.Disconnect the flexible wire from connector CN101 . 45' .<_ Hook b
on the servo control board from pick-up.

ATTENTION

At this time, please extract the wire after short-circuited
of two places on the wire in part a with solder.

Please remove the solder two places of part a after
connecting the wire with CN101 when reassembling.

Servo control
board

3.Two places in hook b are removed, the servo control Fig.4
board is lifted, and it is removed.

Rear panel
I Removing the rear panel (see Fig.5)

*Prior to performing the following procedure, remove
the top cover.

1.Remove the three screws C and nine screws E
attaching the rear panel on the back of the body.

I Removing the front panel assembly '1
(see Fig.6,7) H°°k ° .
* Prior to performing the following procedure, remove From panel

the top cover. assembly
* There is no need to remove the mechanism assembly.

1.Remove the one screw F attaching the front panel
assembly on the bottom chassis.

2.Disconnect the wire from CN702 and CN703 on the
main board respectively.

3.Hook c and d are removed respectively, and the front
panel assembly is removed.

I Removing the main board (see Fig.7)

* Prior to performing the following procedure, remove
the top cover, mechanism assembly, surround audio
board and rear panel.

CN703

1.Disconnect the wire from CN702 and CN703 on the G
main board respectively.

2.Remove the four screws G attaching the main board
on the bottom chassis.

Page 26

XV-SSGBK/XV-SS7SL

I MN102L25GGX2(IC401):Unlt CPU

Pin function
Pin No. Symbol l/O Function Pin No. Symbol I/O Function

1 WAIT | Micon wait signal input 51 _ .

2 RE 0 Read enable 52 _ -

3 SPMUTE O Spindle muting output to lC251 53 ADSCEN 0 Serial enable signal for ADSC

4 WEN 0 Write enable 54 VDD - Power supply

5 - - Non connect 55 FEPEN 0 Serial enable signal for FEP

6 CS1 0 Chip select for ODC 56 SLEEP O Standby signal for FEP

7 CS2 0 Chip select for ZIVA 57 BUSY I Communication busy

8 CS3 0 Chip select for outer ROM 58 REG 0 Communication Request

9 DRVMUTE 0 Driver mute 59 CIRCEN O 0ch command select

10 SBRK 0 Short brake terminal 60 _ - Non connect

11 LSIRST O LSI reset 61 V88 - Ground

12 WORD 0 Bus selection input 62 EPCS O EEPROM chip select

13 A0 0 Address bus 0 for CPU 63 EPSK O EEPROM clock

14 A1 0 Address bus 1 for CPU 64 DPDI I EEPROM data input

15 A2 0 Address bus 2 for CPU 65 EPDO O EEPROM data output

16 A3 0 Address bus 3 for CPU 66 VDD - Power supply

17 VDD - Power supply 67 SCLKO I Communication clock

18 SYSCLK - Connect to TP169 68 S2UDT I Communication input data
19 V88 - Ground 69 UZSDT 0 Communication output data
20 XI - Not use (Connect to vss) 7O CPSCK O Clock for ADSC serial

21 X0 - Connect to TP170 71 SDIN I ADSC serial data input
22 VDD - Power supply 72 SDOUT O ADSC serial data output
23 OSCI l Clock signal input(13.5MHz) 73 _ - Not use

24 OSCO O Clock signal output(13.5MHz) 74 _ - Not use

25 MODE I CPU Mode selection input 75 NMI - Not use

26 A4 0 Address bus 4 for CPU 76 ADSCIRQ I interrupt input of ADSC
27 A5 0 Address bus 5 for CPU 77 ODCIRQ I Interrupt input of ODC

28 A6 0 Address bus 6 for CPU 78 DECIRQ I interrupt input of ZIVA

29 A7 0 Address bus 7 for CPU 79 WAKEUP 0 Not use

30 A8 0 Address bus 8 for CPU 80 ODCIRQ2 I Interruption of system control
31 A9 0 Address bus 9 for CPU 81 ADSEP I Address data selection input
32 A10 0 Address bus 10 for CPU 82 RST | Reset input

33 A11 0 Address bus 11 for CPU 83 VDD - Power supply

34 VDD - Power supply 84 TEST1 | Test signal 1 input

35 A12 0 Address bus 12 for CPU 85 TEST2 I Test signal 2 input

36 A13 0 Address bus 13 for CPU 86 TEST3 I Test signal 3 input

37 A14 0 Address bus 14 for CPU 87 TEST4 I Test signal 4 input

38 A15 0 Address bus 15 for CPU 88 TEST5 I Test signal 5 input

39 A16 0 Address bus 16 for CPU 89 TESTB I Test signal 6 input

40 A17 0 Address bus 17 for CPU 90 TEST7 I Test signal 7 input

41 A18 0 Address bus 18 for CPU 91 TEST8 I Test signal 8 input

42 A19 0 Address bus 19 for CPU 92 V88 - Ground

43 V88 - Ground 93 D0 I/O Data bus 0 of CPU

44 A20 0 Address bus 20 for CPU 94 D1 l/O Data bus 1 of CPU

45 TXSEL O TX Select 95 D2 l/O Data bus 2 of CPU

46 HAGUP O 96 D3 l/O Data bus 3 of CPU

47 - - Non connect 97 D4 l/O Data bus 4 of CPU

48 . - Non connect 98 D5 I/O Data bus 5 of CPU

49 HMFON 99 D6 I/O Data bus 6 of CPU

50 TRVSW I Detection switch of traverse 100 D7 l/O Data bus 7 of CPU

inside

1-26