Magnavox 27MDTR10s Schematic

MANUAL 5885 Color TV with Built-In VCR/DVD Player Magnavox 27MDTR10S

Philips Consumer Electronics Company

A Division of Philips Electronics North America Corporation

Technical Service Data

Service Solutions Group Technical Publications Dept. P.O. Box 555, 401 E. Old Andrew Johnson Hwy. Jefferson City,TN 37760

Sec. 1A: Main Section

( 27MDTR10S )

Specifications Operating Instructions Adjustment Procedures Schematic Diagrams and CBA’s Exploded Views Cabinet & Electrical Parts Lists

Sec. 2: Deck Mechanism Section

MANUAL 5885

Color TV with Built-In VCR/DVD Player

Service Manual

MAGNAVOX

Model: 27MDTR10S

Color TV with Built-In VCR/DVD Player

First Issue: 10/02

2002 Philips Consumer Electronics Company

Philips Consumer Electronics Company

A Division of Philips Electronics North America Corporation

MANUAL 5885

Technical Service Data

Service Solutions Group Technical Publications Dept. P.O. Box 555, 401 E. Old Andrew Johnson Hwy. Jefferson City,TN 37760

Sec. 1A: Main Section

( 27MDTR10S )

Specifications Operating Instructions Adjustment Procedures Schematic Diagrams and CBA’s Exploded Views Cabinet & Electrical Parts Lists

Color TV with Built-In VCR/DVD Player

Service Manual

MAGNAVOX

Model: 27MDTR10S

Color TV with Built-In VCR/DVD Player

First Issue: 10/02

2002 Philips Consumer Electronics Company

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics Company** Equipment. The service procedures recommended by Philips and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.

It is important to note that this manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not possibly know, evaluate and advise the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, Philips has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by Philips must first satisfy himself thoroughly that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

** Hereafter throughout this manual, Philips Consumer Electronics Company

will be referred to as Philips.

WARNING

Critical components having special safety characteristics are identified with a # by the Ref. No. in the parts list and enclosed within a broken line* (where several critical components are grouped in one area) along with the safety symbol # on the schematics or exploded views.

Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards.

Under no circumstances should the original design be modified or altered without written permission from Philips. Philips assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes all liability.

* Broken Line

Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.

"DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems Inc.

TABLE OF CONTENTS

[ Main Section ]

Page

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1

LASER BEAM SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1

IMPORTANT SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

STANDARD NOTES FOR SERVICING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1

PREPARATION FOR SERVICING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1

OPERATING CONTROLS AND FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1

REMOTE CONTROL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1

CABINET DISASSEMBLY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1

ELECTRICAL ADJUSTMENT INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1

Adjustment Points and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-7

FIRMWARE RENEWAL MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1

BLOCK DIAGRAMS <TV/VCR SECTION>

Servo/System Control Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1

Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-3

Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-5

Hi-Fi Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-7

Chroma/Tuner Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-9

CRT/H.V. Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-11

Power Supply Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-13

BLOCK DIAGRAMS <DVD SECTION>

DVD System Control Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-15

RF Signal Process/Servo Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-17

DVD Signal Process Block Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-19

DVD Video Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-21

DVD Audio Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-23

SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1

Main 1/4 Schematic Diagram Parts Location Guide<TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-2

Main 1/4 Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-3

Main 2/4 Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-6

Main 2/4 Schematic Diagram Parts Location Guide <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-9

Main 3/4 Schematic Diagram Parts Location Guide <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-10

Main 3/4 Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-11

Main 4/4 Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-14

Main 4/4 Schematic Diagram Parts Location Guide <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-17

Main CBA Parts Location Guide <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-19

Main CBA Top View <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-21

Main CBA Bottom View <TV/VCR SECTION>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-24

CRT Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-27

CRT CBA Top/Bottom View <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-29

H.V. Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-31

H.V. CBA Top View <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-33

H.V. CBA Bottom View <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-35

Junction-A, B CBA Top/Bottom View <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-37

Power Supply/AV Schematic Diagram Parts Location Guide <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . 1-12-38

Power Supply/AV Schematic Diagram <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-39

Power Supply/AV CBA Top View <TV/VCR SECTION>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-42

Power Supply/AV CBA Bottom View <TV/VCR SECTION>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-45

DVD Main 1/4 Schematic Diagram <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-48

DVD Main 2/4 Schematic Diagram <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-51

DVD Main 3/4 Schematic Diagram <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-54

DVD Main 4/4 Schematic Diagram <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-57

Filter Schematic Diagram <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-59

Filter CBA Top/Bottom View <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-61

WAVEFORMS<TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1

WAVEFORMS<DVD SECTION>. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-3

WIRING DIAGRAM <TV/VCR SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1

WIRING DIAGRAM <DVD SECTION> . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-3

SYSTEM CONTROL TIMING CHARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1

IC PIN FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1

LEAD IDENTIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17-1

ELECTRICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18-1

EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19-1

MECHANICAL PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20-1

SPECIFICATIONS

*ˆMode---------SP mode unless otherwise specified *Test input terminal

<Except Tuner>-------------Video input (1Vp-p) Audio input (-10dB) <Tuner>-----------------------Ant. input (80dBµV) Video: 87.5% Audio: 25kHz dev (1kHz Sin)

Description Condition Unit Nominal Limit

1. Over Scan — % 90 5

Horizontal % — 15

2. Linearity

3. High Voltage — kV 29 —

Description Condition Unit Nominal Limit

Vertical % — 10

Center m/m — 0.4

1. Misconvergence

2. Tint Control Range — deg ±30 —

3. Contrast Control Range — dB 6 2

4. Brightness (100% White Full Field) Contrast: Max ft-L 25 18

5. Color Temperature — K 9200 —

Corner m/m — 2.5

Side m/m — 1.5

<DVD>

Measurement at TP

Description Condition Unit Nominal Limit

1. Horizontal Resolution (TDV-540 TIT.2 CHP.16) — Line 330 320

2. Video S/N at CN3400 (TDV-540 TIT.2 CHP.6) — dB 60 55

3. S/N Chroma at CN3400 AM — dB 58 53

(TDV-540 TIT.2 CHP.17) PM — dB 58 53

4. Audio Distortion (LPCM 48 kHz, W/LPF) (PTD 1-NOR TIT.1 CHP.1)

0.03

0.07

5. Audio freq. response (LPCM 48kHz) (PTD 1-NOR TIT.1 CHP.5 -- 10)

6. Audio S/N (LPCM 48KHz,W/LPF,A-WTD) (PTD 1-NOR TIT.1 CHP.1 -- 2)

L, 20 Hz

R, 20 Hz

L, 20 kHz

R, 20 kHz

1-1-1 T601SP

dB 0 +4/-5

dB 100 85

<VCR>

Description Condition Unit Nominal Limit

1. Horizontal Resolution (R/P, SP) Line 230 200

2. Jitter (Low) (R/P, SP) µS0.1 0.2

3. S/N Chroma AM(SP) (R/P, SP) dB 38 33

PM(SP) (R/P, SP) dB 38 33

4. Wow & Flutter (JIS, UNWTD) (R/P, SP) % 0.25 0.5

<TUNER>

Description Condition Unit Nominal Limit

1. Video S/N (80dBµV, TV4ch) — dB 45 40

2. Audio S/N (W/LPF) — dB 45 40

All items are measured across 8Ω resistor at speaker output terminal.

Description Condition Unit Nominal Limit

1. Audio Output Power (R/P, SP) W 1.0 0.8

2. Audio S/N (W/LPF) (R/P, SP) dB 40 36

3. Audio distortion (W/LPF,-10dB 1kHz IN) (R/P, SP) % 3.0 5.0

4. Audio Freq. Response (-10dB 1kHz IN) 200 Hz (R/P, SP) dB -2.0 -2.0±5.0

8 kHz (R/P, SP) dB 0 0±6.0

<Hi-Fi AUDIO>

* All items are measured at TP1701 and TP1702.

Description Condition Unit Nominal Limit

1. Output Level (-10dB 1kHz IN) (R/P, SP) dB -8.0 -8±4

2. Audio Distortion (-10dB 1kHz IN) (R/P, SP) % 0.5 1.0

3. Freq. Response (-15dB 1kHz IN) 20 Hz (R/P, SP) dB 0 ±4

20 kHz (R/P, SP) dB 0 ±4

Note: Nominal specifications represent the design specifications. All units should be able to approximate these. Some will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.

1-1-2 T601SP

LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.

Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin.

The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.

Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.

Drive Mecha Assembly

Laser Beam Radiation

Laser Pickup

Turntable

LASER RADIATION

WHEN OPEN. DO NOT

STARE INTO BEAM.

CAUTION

Location: Inside Top of DVD mechanism.

1-2-1 DVD_LASER

IMPORTANT SAFETY PRECAUTIONS

Product Safety Notice

Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified by a # on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product’s Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are carefully inspected to confirm with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

Precautions during Servicing

A. Parts identified by the # symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements. Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1)Wires covered with PVC tubing

2)Double insulated wires

3)High voltage leads

D. Use specified insulating materials for hazardous

live parts. Note especially:

1)Insulation tape

2)PVC tubing

3)Spacers

4)Insulators for transistors

E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering.

F. Observe that the wires do not contact heat produc-

ing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.).

G. Check that replaced wires do not contact sharp

edges or pointed parts.

H. When a power cord has been replaced, check that

5 - 6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations.

J. Be careful that foreign objects (screws, solder

droplets, etc.) do not remain inside the set.

K. Crimp type wire connector

The power transformer uses crimp type connectors which connect the power cord and the primary side of the transformer. When replacing the transformer, follow these steps carefully and precisely to prevent shock hazards. Replacement procedure

1)Remove the old connector by cutting the wires at a point close to the connector.

Important: Do not re-use a connector. (Discard it.)

2)Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

3)Align the lengths of the wires to be connected. Insert the wires fully into the connector.

4)Use a crimping tool to crimp the metal sleeve at its center. Be sure to crimp fully to the complete closure of the tool.

L. When connecting or disconnecting the internal con-

nectors, first, disconnect the AC plug from the AC outlet.

1-3-1 DVD_SFN1

Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified values to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm specified clearance distance (d) and (d’) between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1)

Table 1 : Ratings for selected area

AC Line Voltage Clearance Distance (d) (d’)

Chassis or Secondary Conductor

Primary Circuit Terminals

dd'

120 V

Note: This table is unofficial and for reference only.

Be sure to confirm the precise values.

2. Leakage Current Test

Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.) is lower than or equal to the specified value in the table below.

Measuring Method (Power ON) :

Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across the terminals of load Z. See Fig. 2 and the following table.

Table 2: Leakage current ratings for selected areas

AC Line Voltage Load Z Leakage Current (i) Earth Ground (B) to:

120 V

≥ 3.2mm (0.126 inches)

0.15µF CAP. & 1.5kΩ RES.

Connected in parallel

Exposed Accessible Part

1.5k

i≤0.5mA Peak Exposed accessible parts

0.15 F

Earth Ground

Power Cord Plug Prongs

AC Voltmeter (High Impedance)

Fig. 1

Fig. 2

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

1-3-2 DVD_SFN1

STANDARD NOTES FOR SERVICING

Circuit Board Indications

a. The output pin of the 3 pin Regulator ICs is indi-

cated as shown.

Top View

Out

b. For other ICs, pin 1 and every fifth pin are indicated

as shown.

Input

Pin 1

c. The 1st pin of every male connector is indicated as

shown.

Pin 1

Bottom View

How to Remove / Install Flat Pack-IC

1. Removal

With Hot-Air Flat Pack-IC Desoldering Machine:.

(1) Prepare the hot-air flat pack-IC desoldering

machine, then apply hot air to the Flat Pack-IC (about 5 to 6 seconds). (Fig. S-1-1)

Fig. S-1-1

(2) Remove the flat pack-IC with tweezers while apply-

ing the hot air.

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(1) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

Instructions for Connectors

1. When you connect or disconnect the FFC (Flexible Foil Connector) cable, be sure to first disconnect the AC cord.

2. FFC (Flexible Foil Connector) cable should be inserted parallel into the connector, not at an angle.

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

Caution:

1. Do not supply hot air to the chip parts around the flat pack-IC for over 6 seconds because damage to the chip parts may occur. Put masking tape around the flat pack-IC to protect other parts from damage. (Fig. S-1-2)

2. The flat pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or the solder lands under the IC when removing it.

Hot-air Flat Pack-IC Desoldering

CBA

Masking Tape

Tweezers

Machine

Flat Pack-IC

Fig. S-1-2

1-4-1 DVD_NOTE

With Soldering Iron:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

Flat Pack-IC

Desoldering Braid

(4) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(5) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

Note:

When using a soldering iron, care must be taken to ensure that the flat pack-IC is not being held by glue. When the flat pack-IC is removed from the CBA, handle it gently because it may be damaged if force is applied.

Soldering Iron

Fig. S-1-3

(2) Lift each lead of the flat pack-IC upward one by

one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air desoldering machine. (Fig. S-1-4)

Sharp Pin

Fine Tip Soldering Iron

Fig. S-1-4

(3) Bottom of the flat pack-IC is fixed with glue to the

CBA; when removing entire flat pack-IC, first apply soldering iron to center of the flat pack-IC and heat up. Then remove (glue will be melted). (Fig. S-1-6)

(4) Release the flat pack-IC from the CBA using twee-

zers. (Fig. S-1-6)

With Iron Wire:

(1) Using desoldering braid, remove the solder from all

pins of the flat pack-IC. When you use solder flux which is applied to all pins of the flat pack-IC, you can remove it easily. (Fig. S-1-3)

(2) Affix the wire to a workbench or solid mounting

point, as shown in Fig. S-1-5.

(3) While heating the pins using a fine tip soldering

iron or hot air blower, pull up the wire as the solder melts so as to lift the IC leads from the CBA contact pads as shown in Fig. S-1-5

To Solid Mounting Point

CBA

Tweezers

Hot Air Blower

Iron Wire

Soldering Iron

Fig. S-1-5

Fine Tip Soldeing Iron

Flat Pack-IC

Fig. S-1-6

1-4-2 DVD_NOTE

2. Installation

(1) Using desoldering braid, remove the solder from

the foil of each pin of the flat pack-IC on the CBA so you can install a replacement flat pack-IC more easily.

(2) The “I” mark on the flat pack-IC indicates pin 1.

(See Fig. S-1-7.) Be sure this mark matches the 1 on the PCB when positioning for installation. Then presolder the four corners of the flat pack-IC. (See Fig. S-1-8.)

(3) Solder all pins of the flat pack-IC. Be sure that none

of the pins have solder bridges.

Example :

Pin 1 of the Flat Pack-IC is indicated by a " ● " mark.

Fig. S-1-7

Instructions for Handling Semi-conductors

Electrostatic breakdown of the semi-conductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.

1. Ground for Human Body

Be sure to wear a grounding band (1MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

2. Ground for Workbench

(4) Be sure to place a conductive sheet or copper plate

with proper grounding (1MΩ) on the workbench or other surface, where the semi-conductors are to be placed. Because the static electricity charge on clothing will not escape through the body grounding band, be careful to avoid contacting semi-conductors with your clothing.

< Incorrect >

CBA

Presolder

Flat Pack-IC

Fig. S-1-8

CBA

< Correct >

Grounding Band

1MΩ

CBA

1MΩ

Conductive Sheet or Copper Plate

1-4-3 DVD_NOTE

PREPARATION FOR SERVICING

How to Enter the Service Mode

Caution: 1

Optical sensors are used for Tape Start and End Sensor on this equipment. Read this page carefully and prepare as described on this page before starting to service; otherwise, the unit may operate unexpectedly.

Preparing: 1

Cover Q202 (START SENSOR) and Q201 (END SENSOR) with Insulation Tape or enter the Service Mode to activate Sensor Inhibition automatically.

Note: Avoid playing, rewinding or fast forwarding the tape to its beginning or end, because both Tape End Sensors are not active.

How to Enter the Service Mode

1. Turn power on.

2. Use service remote control unit and press WAKEUP/SLEEP key. (See page 1-9-1)

3. When entering the Service Mode, one of the number (1, 2 or 4) will display at corners of the screen.

4. During the Service Mode, electrical adjustment mode can be selected by remote control key. (Service remote control unit).

Details are as follows.

Key Adjustment Mode

Purity check mode: Shows Red,

Caution: 2

The deck mechanism assembly is mounted on the Main CBA directly, and SW1211 (REC-SAFETY SW) is mounted on the Main CBA. When deck mechanism assembly is removed from the Main CBA due to servicing, this switch can not be operated automatically.

Green, Blue or White cyclically on the screen each time the “7” key is pressed.

H. Shift adjustment mode: See adjustment instructions page 1-9-3.

V.size/V. shift adjustment: See adjustment instructions pages 1-9-2 & 1-9-3.

Preparing: 2

1. To eject the tape, press the STOP/EJECT button on the unit (or Remote Control).

2. When you want to record during the Service mode, press the Rec button while depressing SW1211 (REC-SAFETY SW) on the Main CBA.

Q201 (END SENSOR)

Q202 (START SENSOR)

Key Adjustment Mode

Picture adjustment mode: Press the MENU button to change from BRT (Bright), *CNT (Contrast), *CLR

0 No need to use.

1 No need to use.

6 No need to use.

(Color), *TNT(Tint) and *V-T. Press CH UP/DOWN key to display Initial Value. *Marked items are not necessary to adjust normally.

AGC/H adjustment mode: See adjustment instructions page 1-9-2.

Auto AFT adjustment mode: See adjustment instructions page 1-9-2.

Auto record mode: Perform recording (15 Sec.)-->Stop-->Rewind (Zero return) automatically.

Head switching point adjustment mode: See adjustment instructions page 1-9-5.

SW1211

(REC-SAFETY SW)

MAIN CBA

1-5-1 TD603PFS

OPERATING CONTROLS AND FUNCTIONS

1-6-1 TD603IB

1-6-2 TD603IB

REMOTE CONTROL OPERATION

1-7-1 TD603IBR

1-7-2 TD603IBR

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly Flowchart

This flowchart indicates the disassembly steps for the cabinet parts and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were.

Caution!

When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

[1] Rear Cabinet

[2] H.V. CBA

[4] CRT

[5] Shield Box

[6] DVD Mechanism

MAIN CBA UNIT

[9] Bottom Plate

[3] Tray Chassis Unit

[11] Deck Assembly

[12] Main CBA

[8] Filter CBA[7] DVD

REMOVAL

ID/

LOC.

No.

PAR T

REMOVE/ *UNHOOK/UNLOCK/

Fig.

No.

RELEASE/UNPLUG/ DESOLDER

[7]

DVD Main CBA Unit

3(S-7), CN101,

CN401

[8] Filter CBA 3, 6 CN401, CN402 -

Bottom

[9]

[10]

[11]

Plate

Power Supply/AV CBA

Deck Assembly

3 6(S-8) -

3(S-9), CN2802,

3, 6

CN2803, CN2804

7(S-10), 2(S-11), CL1201, CL1401,

3, 6

CL1402, CL1403

[12] Main CBA 3 3(S-12) -

↓

(1)

↓

(2)

↓

(3)

↓

(4)

Note

2-1 2-2 2-3

↓

(5)

[10] Power Supply/AV CBA

2. Disassembly Method

REMOVAL

ID/

LOC.

PART

No.

Rear

[1]

Cabinet

H.V. CBA

[2]

(With Holder)

Tr ay

[3]

Chassis Unit

[4] CRT 4 4(S-4) -

[5] Shield Box 3 5(S-5) -

REMOVE/ *UNHOOK/UNLOCK/

Fig.

No.

RELEASE/UNPLUG/ DESOLDER

1, 2 7(S-1), 1(S-2), 1(S-3) -

Anode Cap, CN501,

3, 4,

CRT CBA, CN571,

CN1301, CN1302, CN2602

CN1802, CN2801,

3, 6

CN2601

Note

(1): Order of steps in Procedure. When reassembling,

follow the steps in reverse order.These numbers are also used as the Identification (location) No. of

parts in Figures. (2): Parts to be removed or installed. (3): Fig. No. showing Procedure of Part Location. (4): Identification of part to be removed, unhooked,

unlocked, released, unplugged, unclamped, or

desoldered.

S=Screw, P=Spring, L=Locking Tab, CN=Connec-

tor, *=Unhook, Unlock, Release, Unplug, or Desol-

der

2(S-2) = two screws (S-2) (5): Refer to the following Reference Notes in the

Table.

[6]

DVD Mechanism

CN501, CN701,

3, 6

3(S-6)

1-8-1 TD603DC

Reference Notes in the Table

Caution !

When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

Reference Notes in the Table CAUTION 1: Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

1. Disconnect the following: Anode Cap, CN501, CRT CBA, CN571, CN2602, CN1301 and CN1302. Then remove H.V. CBA (with Holder).

CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work.

To avoid damage of pickup follow next procedures.

2-1. Slide the pickup unit as shown in Fig. 5.

2-2. Short either of the two type three short lands with

solder before removing the FFC cable (CN101) from it. If you disconnect the FFC cable (CN101), the laser diode of pickup will be destroyed. (Fig.

2-3. Disconnect Connector (CN401). Remove screws

3(S-7) and lift the DVD Main CBA Unit. (Fig. 5)

CAUTION 3: When reassembling, confirm the FFC cable (CN101) is connected completely. Then remove the solder from the three short lands. (Fig. 5)

4. Remove screws 7(S-10) and 2(S-11). Then, desolder connectors (CL1201, CL1401, CL1402, CL1403) and lift up the Deck Assembly.

1-8-2 TD603DC

S-2

S-1

[1] REAR CABINET

S-1

S-3

S-1

[1] REAR CABINET

Fig. 1

S-1

S-3

S-2

S-1

Fig. 2

1-8-3 TD603DC

S-5

[8] Filter CBA

S-8

[9] Bottom Plate

S-8

S-6

[6] DVD Mechanism

S-9

[5] Shield Box

S-8

S-9

S-10

[3] Tray Chassis

S-10

[11] Deck Assembly

S-10

S-12

H.V. CBA

[10] Power Supply/ AV CBA

S-11

[2] H.V. CBA

[12] Main CBA

S-11

(wih Holder)

Fig. 3

1-8-4 TD603DC

S-4

Anode Cap

CRT CBA

S-4

Type A

[4] CRT

S-4

Fig. 4

Three short lands

CN101

S-7

CN401

S-7

[7] DVD Main CBA Unit

DVD Mechanism

Type B

Slide

Pickup Unit

View for B

View for A

Three short lands

View for C

Fig. 5

1-8-5 TD603DC

ANODE

CRT

GND

DVD MAIN CBA

FACTORY USE ONLY

CN501 CN101

CN401

CN701

CL501

CRT CBA

CN501

SCREEN

FOCUS

CL504A

SPEAKER

CN403

CN401

CN2801

CN2401 CN2402

POWER SUPPLY/ AV CBA

CN2802

CL1403

MAIN CBA

CN404

CN402

CN2803

CN1805

CL1401

CL1402

FILTER CBA

CN2601

CN2602

CN2804

CN1804

CN1803

INT MON FACTORY USE ONLY

CN1303

H.V. CBA

CN1802

TO SPEAKER

CL503A

CL501A

CL502A

CN571

CL1201

CN1302

CN1301

FE HEAD

CYLINDER ASSEMBLY

TUNER

AC HEAD ASSEMBLY

DECK ASSEMBLY

CAPSTAN MOTOR

Fig. 6

1-8-6 TD603DC

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note:

"CBA" is abbreviation for "Circuit Board Assembly."

NOTE:

Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.

Test Equipment Required

1. NTSC Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst)

2. AC Milli Voltmeter (RMS)

3. Alignment Tape (VFMS0001H6), Blank Tape

4. DC Voltmeter

5. Oscilloscope: Dual-trace with 10:1 probe,

V-Range: 0.001~50V/Div, F-Range: DC~AC-60MHz

6. Frequency Counter

7. Plastic Tip Driver

How to Set Up the Service Mode:

Service Mode:

1. Use the service remote control unit.

2. Turn the power on. (Use main power on the TV unit.)

3. To enter the TV mode, press "CH o" or "CH p" button on the TV unit.

4. Press "DISC MENU" button on the service remote control unit. (Version of micro computer will display on the CRT. (Ex: 057-001)

X-Ray Protection Test

X-Ray protection test should be done when replacing any parts of this chassis.

1. Short test points J520 and J522 (on H.V. CBA.)

2. Confirm that the main power turns off.

3. If the main power does not turn off, then replace the following parts (D591, Q591, R592, R593, R594 and IC1201.)

4. Perform steps 1 to 3 again.

1. DC 120V (+B) Adjustment

Purpose: To obtain correct operation.

Symptom of Misadjustment: The picture is dark and

unit does not operate correctly.

How to make service remote control unit:

1. Prepare normal remote control unit. (ID No. NE206UD, Part No. 4835 218 37345) Remove 4 screws from the back lid. (Fig. 1)

2. Add J1 (Jumper Wire) to the remote control CBA. (Fig. 2)

SCREW

Remote control unit (Bottom)

J 1

Fig. 1

Test Point Adj. Point

J523(+B)

HEAT SINK (on H.V. CBA)

(GND)

M. EQ. Spec.

DC Voltmeter +120±0.5V DC

Notes: J523(+B), HEAT SINK --- H.V. CBA

VR2601 --- Power Supply/AV CBA

1. Connect the unit to AC power outlet.

2. Connect DC Volt Meter to J523(+B) and HEAT SINK (on H.V. CBA) (GND).

3. Adjust VR2601 so that the voltage of J523(+B) becomes +120±0.5V DC.

VR2601

Remote control CBA

Fig. 2

1-9-1 TD603EA

2. Auto AFT (VCO) Adjustment

4. H Adjustment

Purpose: To operate AFT correctly.

Symptom of Misadjustment: AFT does not work cor-

rectly and/or synchronization is faulty.

1. Set the unit to the Video mode with no signal input.

2. Enter the Service Mode. (See page 1-9-1.) Then press number "3" button on the service remote control unit.

3. If the screen color changes to "Green" then this adjustment is finished.

4. If the screen color changes to "Red" then this adjustment is failed. Repeat steps 1 and 2 or check relative circuit or parts (IC).

3. TV AGC Adjustment

Purpose: Set AGC (Auto Gain Control) Level.

Symptom of Misadjustment: AGC does not synchro-

nize correctly when RF input level is too weak and picture distortion may occur if it is too strong.

Test Point Adj. Point Input

TP1001

(AGC)

CH o / p

buttons

M. EQ. Spec.

Color Bar 67.25MHz

60dBµV

Purpose: To get correct horizontal position and size of screen image.

Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed.

Test Point Adj. Point Mode

R583 CH o / p buttons Video

M. EQ. Spec.

Frequency Counter 15.734kHz±300Hz

Note: R583 --- H.V. CBA

1. Connect frequency counter to R583.

2. Operate the unit for at least 20 minutes.

3. Enter the Service Mode. (See page 1-9-1.) Press "2" button on the service remote control unit and select H-ADJ Mode. (Press "2" button then display will change H-ADJ and AGC.)

4. Press "CH o / p" buttons on the service remote control unit so that the display will change "0" to "7." At this moment, choose display "0" to "7" when the frequency counter display is closest to

15.734kHz±300Hz.

5. Turn the power off and on again.

Pattern Generator

DC Voltmeter

Note: TP1001--- Main CBA

1. Enter the Service Mode. (See page 1-9-1.) Then press "2" button on the service remote control unit and select AGC mode.

2. Receive the Color Bar signal for channel 4 (67.25MHz). (RF Input Level: 60dBµV)

3. Press "CH o / p" buttons so that the voltage of TP1001 (AGC) becomes +2.8V±0.3V DC.

4. Turn the power off and on again.

+2.8±0.3V DC

5. V. Size Adjustment

Purpose: To obtain correct vertical height of screen

image.

Symptom of Misadjustment: If V. Size is incorrect, vertical height of image on the screen may not be properly displayed.

Adj. Point Input

CH o / p buttons Monoscope

M. EQ. Spec.

Pattern Generator 90±5%

1. Enter the Service Mode. (See page 1-9-1.) Press "9" button on the service remote control unit and select V-S Mode. (Press "9" button then display will change to V-P and V-S).

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the service remote control unit so that the monoscope pattern is 90±5% of display size and the circle is round.

1-9-2 TD603EA

6. V. Shift Adjustment

8. Cut-off Adjustment

Purpose: To obtain correct vertical position of screen

image.

Symptom of Misadjustment: If V. shift is incorrect, vertical position of image on the screen may not be properly displayed.

Adj. Point Input

CH o / p buttons Monoscope

M. EQ.

Pattern Generator

1. Enter the Service Mode. (See page 1-9-1.) Press "9" button on the service remote control unit and select V-P Mode. (Press "9" button then display will change to V-P and V-S).

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the service remote control unit so that the top and bottom of the monoscope pattern are equal to each other.

7. H. Shift Adjustment

Purpose: To adjust the beam current of R, G, B, and

screen voltage.

Symptom of Misadjustment: White color may be reddish, greenish or bluish.

Adj. Point Mode Input

Screen-Control Ext.

M. EQ. Spec.

Pattern Generator

Color Analyzer

Figure

PATTERN GENERATOR

Black Raster /

White Raster

See Reference

Notes below

Purpose: To obtain correct horizontal position and size of screen image.

Symptom of Misadjustment: Horizontal position and size of screen image may not be properly displayed.

Adj. Point Input

CH o / p buttons Monoscope

M. EQ.

Pattern Generator

1. Enter the Service Mode. (See page 1-9-1.) Press "8" button on the service remote control unit and select H-P Mode.

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the service remote control unit so that the left and right side of the monoscope pattern are equal to each other.

4. Turn the power off and on again.

EXT. INPUT

Color Analyzer

Fig. 3

Notes: Screen Control FBT --- H.V. CBA

FBT= Fly Back Transformer Use the service remote control unit

1. Degauss the CRT and allow CRT to operate for 20 minutes before starting the alignment.

2. Input the Black raster signal from EXT. input.

3. Enter the Service Mode. (See page 1-9-1.)

4. Press the "VOL p" button. (Press "VOL p" then display will change CUT OFF/ DRIVE, VCO adjustment, 7Fh adjustment).

5. Choose CUT OFF/DRIVE Mode then press "1" button. This adjustment mode is CUT OFF (R). Now there should be a horizontal line across the center of the picture tube. If needed gradually turn the screen control on the flyback clockwise until the horizontal line appears.

6. Press the "CH o / p" button until the horizontal line becomes white.

7. Choose CUT OFF/DRIVE mode then press "2" button. This adjustment mode is CUT OFF (G). Press "CH o / p" until the horizontal line becomes white.

8. Choose CUT OFF/DRIVE mode then press "3" button. This adjustment mode is CUT OFF (B). Press "CH o / p" until the horizontal line becomes white.

9. Input the White Raster Signal from Video In.

1-9-3 TD603EA

10.Set the color analyzer to the CHROMA mode and after zero point calibration, bring the optical receptor to the center on the tube surface (CRT).

11.Choose CUT OFF/DRIVE mode then press "4" button on the service remote control unit for Red adjustment. Press "5" button on the service remote control unit for Blue adjustment.

12.In each color mode, press "CH o / p" buttons to adjust the values of color.

13.Adjust Red and Blue color so that the temperature becomes 9200K (x : 286 / y : 294) ±3%.

14.At this time, re-check that horizontal line is white. If not, re-adjust Cut-off Adjustment until the horizontal line becomes pure white.

15.Turn the power off and on again.

9. H. Size Adjustment

11. Sub-Brightness Adjustment

Purpose: To get proper brightness.

Symptom of Misadjustment: If Sub-Brightness is

incorrect, proper brightness cannot be obtained by adjusting the Brightness Control.

Adj. Point Input

CH o / p

buttons

M. EQ. Spec.

Pattern Generator See below

Figure

SYMPTE 7.5IRE

Purpose: To obtain correct size of screen image.

Symptom of Misadjustment: Size of screen image

may not be properly displayed.

Adj. Point Input

VR531 Monoscope

M. EQ. Spec.

Pattern Generator 90+1%/-5%

Note: VR531 --- H.V. CBA

1. Input monoscope pattern.

2. Adjust VR531 so that the monoscope pattern is 90+1%/-5% of the display size and the circle is round.

10. H. Pincushion Adjustment

Purpose: To obtain straight line on the screen.

Symptom of Misadjustment: Straight line image may

not be properly displayed.

Adj. Point Input

White

Note: SYMPTE Setup level --- 7.5 IRE

1. Enter the Service Mode. (See page 1-9-1.) Then input SYMPTE signal from RF input.

2. Press "PICTURE" button. (Press "PICTURE" button then display will change B R T, C N T, T N T, VT and SHP). Select BRT and press "CH o / p" buttons so that the bar is just visible (See above figure).

3. Turn the power off and on again.

Black

This bar just visible

Fig. 4

12. Focus Adjustment

Purpose: Set the optimum Focus. Symptom of Misadjustment: If Focus Adjustment is

incorrect, blurred images are shown on the display.

VR530 Crosshatch

M. EQ. Spec.

Pattern Generator See below

Note: VR530 --- H.V. CBA

1. Input crosshatch pattern.

2. Adjust VR530 so that the line of the crosshatch pattern becomes straight.

Adj. Point Input

Focus Control Monoscope

M. EQ. Spec.

Pattern Generator See below.

Notes: Focus VR (FBT) --- H.V. CBA

FBT= Fly Back Transformer

1. Operate the unit more than 30 minutes.

2. Face the unit to the East and degauss the CRT using a degaussing coil.

3. Input the monoscope pattern.

4. Adjust the Focus Control on the FBT to obtain a clear picture.

1-9-4 TD603EA

13. SIF Adjustment

Purpose: To set the SIF (Sound Intermediate Fre-

quency).

Symptom of Misadjustment: Audio may not sound correctly.

Note: This adjustment automatically done by the chrominance IC (IC1301).

14. CCS Text Box Location

When replacing the CRT, the CCS Text Box might not stay in appropriate position. Then, replace micro computer.

Note: This adjustment automatically done by the microcomputer.

15. Head Switching Position Adjustment

Purpose: Determine the Head Switching Point during

Playback.

Symptom of Misadjustment: May cause Head Switching Noise or Vertical Jitter in the picture.

Note: Unit reads Head Switching Position automatically and displays it on the screen (Upper Left Corner).

1. Playback test tape (VFMS0001H6).

2. Enter the Service Mode. (See page 1-9-1.) Then press the "5" button on the service remote control unit.

3. The Head Switching position will display on the screen; if adjustment is necessary follow step 4.

6.5H(412.7µs) is preferable.

4. Press "CH o" or "CH p" button on the service remote control unit if necessary. The value will be changed in 0.5H steps up or down. Adjustable range is up to 9.5H. If the value is beyond adjustable range, the display will change as:

Lower out of range: 0.0H Upper out of range: -.-H

5. Turn the power off and on again.

The following 2 adjustments normally are not attempted in the field. They should be done only when replacing the CRT then adjust as a preparation.

16. Purity Adjustment

Purpose: To obtain pure color.

Symptom of Misadjustment: If Color Purity Adjust-

ment is incorrect, large areas of color may not be properly displayed.

Adj. Point Input

Deflection Yoke Purity Magnet Red Color

M. EQ. Spec.

Pattern Generator See below.

Figure

GREEN

1. Set the unit facing East.

2. Operate the unit for over 30 minutes before adjusting.

3. Fully degauss the unit using an external degaussing coil.

4. Set the unit to the AUX Mode, which is located before CH2, then input a red raster from video in.

5. Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke back away from the screen. (See Fig. 6.)

6. Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the screen. Tighten Ring Lock. (See Fig. 5,6.)

7. Slowly push the Deflection Yoke toward the bell of the CRT and set it where a uniform red field is obtained.

8. Tighten the clamp screw on the Deflection Yoke.

RED

BLUE

Fig. 5

1-9-5 TD603EA

17. Convergence Adjustment

Purpose: To obtain proper convergence of red, green

and blue beams.

Symptom of Misadjustment: If Convergence Adjustment is incorrect, the edge of white letters may have color edges.

Adj. Point Input

5. Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain the best overall convergence.

6. Fix the Deflection Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke.

C.P. Magnet (RB),

C.P. Magnet (RB-G),

Dot Pattern or

Deflection Yoke

M. EQ. Spec.

Pattern Generator See below.

Figure

CRT

COIL

DY WEDGE

COIL CLAMPER

DEFLECTION YOKE

PURITY

SCREW

C.P. MAGNET CLAMPER

C.P. MAGNET

C.P. MAGNET (RB)

Crosshatch

RB-G

RING LOCK

SCREW

Fig. 6

Fig. 7

C.P. MAGNET (RB-G)

Fig. 8

1. Set the unit to the AUX Mode which is located before CH2 then input a dot or crosshatch pattern.

2. Loosen the Ring Lock and align red with blue dots or crosshatch at the center of the screen by rotating (RB) C.P. Magnets. (See Fig. 7.)

3. Align red / blue with green dots at the center of the screen by rotating (RB-G) C.P. Magnet. (See Fig. 8.)

4. Fix the C.P. Magnets by tightening the Ring Lock.

1-9-6 TD603EA

Adjustment Points and Test Points

Main CBA

TP1001

AGC

VR2601

+B ADJ

UPPER

FOCUS VR

LOWER

SCREEN VR

J523

H.V. CBA

R583

H ADJ

VR530

H. Pincushion

Power Supply/AV CBA

J520

X-RAY

J522

X-RAY

VR531

H.SIZE

1-9-7 TD603EA

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