Sony INT-W200, INT-WJ200 Service Manual

INT-W200 / INT-WJ200

SERVICE MANUAL

INT-W200
INT-WJ200

RM-Y801

RM-J313

U.S. Model

Japan Model

SPECIFICATIONS

Terminals: Video In/Out (1) Power Requirements: 120V AC 60Hz (U.S.)

S-Video Out (1 ) 100V AC 50/60Hz (JAPAN)
Audio (R/L) In/Out (1)
Tel Line (1) Power Consumption: 38 W max
Printer Port (DB25) (1) 8 W stand by
WEBTV port (96 pin) (1)
IR Blaster Out (1) (U.S.) Supplied Accessories:
CH3-CH4 Switch (1) (U.S.)
VHF/UHF In/Out (1) (U.S.) RM-J313 (1) (JAPAN)
AC In (1) Size AA Batteries (2)
Mic Input

Dimensions: 355 mm x 73.5 mm x 226mm (w/h/d) T- Splitter (1)
(w/h/d) 14 x 2

Weight: 3 kg (6 lbs. 10 oz.) (U.S.) Coaxial Cable (1) 1.5m (U.S.)

2.9kg (6 lbs. 6 oz.) (JAPAN)

(JAPAN) AC Power Cord (1) 1.9m

7

57

/8" x 8

/64" IR Blaster (1) (U.S.)

Optional Accessories: Wireless Keyboard

Remote Control:

RM-Y801(1)

A/V (Audio/Video) Cable (1) 1.5m
Telephone Cable (1) 7.5m

S-Video Cable 1.5m (1)

RM-KW100, KI-W200 (U.S.)
KI-WJ200 (JAPAN)

(U.S.

)

MICROFILM

INTERNET TERMINAL

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INT-W200 / INT-WJ200

SAFETY CHECK-OUT

(U.S. Model only)

After correcting the original service problem, perform the following safety checks before releasing the unit to the customer:

1. Check the area of your repair for unsoldered or
poorly-soldered connections. Check the entire board
surface for solder splashes and bridges.

2. Check the interboard wiring to ensure that no wires
are “pinched” or contact high-wattage resistors.

3. Check that all control knobs, shields, covers,
ground straps, and mounting hardware have been
replaced. Be absolutely certain that you have
replaced all the insulators.

4. Look for unauthorized replacement parts,
particularly transistors, that were installed during
a previous repair. Point them out to the customer

and recommend their replacement.

LEAKAGE TEST

The AC leakage from any exposed metal part to earth ground
and from all exposed metal parts to any exposed metal part having
a return to chassis, mU.S.t not exceed 0.5 mA (500 micr oamper e).
Leakage current can be measured by any one of three methods:

1. A commercial leakage tester, such as the Simpson 229 or
RCA WT-540A. Follow the manufacturers' instructions to
use these instructions.

5. Look for parts which, though functioning, show obvious
signs of deterioration. Point them out to the customer
and recommend their replacement.

6. Check the line cords for cracks and abrasion. Recommend
the replacement of any such line cord to the customer.

7. Check the B+ and HV to see if they are specified values.
Make sure your instruments are accurate; be suspicious
of your HV meter if sets always have low HV.

8. Check the antenna terminals, metal trim, “metallized"
knobs, screws, and all other exposed metal parts for AC
Leakage. Check leakage as described below.

To Exposed Metal
Parts on Set

2. A battery-operated AC milliameter. The Data Precision
245 digital multimeter is suitable for this job.

3. Measuring the voltage drop across a resistor by means of
a VOM or battery-operated AC voltmeter. The "limit"
indication is 0.75 V, so analog meters mU.S.t have an accu­rate low voltage scale. The Simpson's 250 and Sanwa SH­63Trd are examples of passive VOMs that are suitable.
Nearly all battery operated digital multimeters that have
a 2V AC range are suitable. (See Fig. A)

AC

1.5 k

0.15 µF

Fig. A. usng an AC voltmeter to check AC leakage.

W

Earth Ground

Voltmeter
(0.75 V)

— 2 —

TABLE OF CONTENTS

Section Title Page

1. GENERAL ................................................................................... 4

2. DISASSEMBLY

2-1. Upper Case and Front Cover Removal....................... 8

2-2. Power Supply Board, Hard Disk and

Main PC Board Removal ...............................................8

3. SYSTEM DIAGNOSTIC TEST............................................. 9

INT-W200 / INT-WJ200

4. DIAGRAMS

4-1. Block Diagrams ...............................................................10

4-2. Power Supply Schematic ............................................. 11

4-3. Power Supply Part List ................................................. 12

4-4. Main PC Board Schematic ............................................13

5. EXPLODED VIEW ....................................................................47

6. ELECTRICAL PARTS LIST ................................................ 48

— 3 —

INT-W200 / INT-WJ200

SECTION 2

DISASSEMBLY

2-1. UPPER CASE AND FRONT COVER REMOVAL

FOUR (4) SIDE OF COVER SCREWS
(S) TIGHT +PTTWH 3X6

FOUR (4) BACK OF COVER
SCREWS +BVTT 3X6

ONE (1) REAR PANEL
SCREW 3X12

ONE (1) REAR PANEL SCREW
(S) TIGHT +PTTWH 3X6

COVER
CONNECTOR

THREE (3) BACK
PANEL LATCHES

FOUR (4) FRONT
PANEL LATCHES

2-2. POWER SUPPLY BOARD, HARD DISK AND MAIN PC BOARD REMOVAL

TWO (2) SCREWS +BVTT (S) 3x6

HARD DISK DRIVE

EIGHT (8) SCREWS +BVTT (S) 3x6

TWO (2) SCREWS +BVTP 3x12

PC BOARD ASSY

POWER SUPPLY BOARD

TWO (2) SCREWS +BVTT (S) 3x6

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