Text preview for : 32CX39B.pdf part of Hitachi 36UX59B Hitachi television Models: 36UX59B, 36FX49B, 36CX39B, 32UX59B, 32FX49B, 32CX39B Chassis: M9LXU Service Manual



Back to : Hitachi_32CX39B.part01.ra | Home

36UX59B 36FX49B 36CX39B

32UX59B 32FX49B 32CX39B

1 /VTSC
I

/1
I I

MSLXU Chassis

1
I

SAFETY PRECAUTIONS ..................................................................................................... PRODUCT SAFETY NOTICE.. ............................................................................................. POWER SOURCE ................................................................................................................ SERVICING PRECAUTIONS ............................................................................................... TECHNICAL SPECIFICATIONS.. ......................................................................................... TECHNICAL CAUTIONS ..................................................................................................... CONTENTS OF ADJUSTMENTS.. ..................................................................................... FRONT PANEL AND REMOTE CONTROL OPERATION ................................................. ADJUSTMENTS ................................................................................................................. ....................................................................................................... TROUBLESHOOTING .................................................................................................................... WAVEFORMS REPLACEMENT PARTS LIST ........................................................................................... WIRING DRAWING ............................................................................................................ CHASSIS BLOCK DIAGRAM ............................................................................................. PRINTED CIRCUIT BOARDS ........................................................................................... BASIC CIRCUIT DIAGRAM ...............................................................................................

.2 .3 3 .4 .8 .9 .10 .13 .24 .51 60 .64 updated 5/2/03 85 .90 .91 .93

CAUTION:

Before servicing this chassis, it is important that the service technician read the "Product Safety Notices" in this service manual.

SAFETY NOTICE USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics are identified by a Aon the parts list in this Service Data and its supplements and bulletins. Before servicing the chassis, it is important that the service technician read and follow the "Safety Precautions" and "Product Safety Notices" in this Service Manual.

SPECIFICATIONS MAY 1999

AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT HHEA-MANUFACTURING DIVISION

MSLXU

SAFETY
NOTICE: located
tllhe

PRECAUTIONS
and safety-related on the chassis notes or picture Leakage Current Hot Check Plug the AC line cord directly into a 12OV AC 60Hz outlet (do not use an isolated transformer for this check). Turn the AC power ON. Using a Leakage Current Tester (Simpson's Model 229 or equivalent), measure for current from all exposed metal parts of the cabinet (antennas, screwheads, overlays, control shafts, etc.) particularly any exposed metal part having a return path to the chassis or to a known earth ground (water pipe, conduit, etc.). Any current measured must not exceed 0.5 milliamps.

Comply with all cautions on or inside the cabinet and

WARNING: Since the chassis of this receiver is connected to one side of the AC power supply during operation, whenever the receiver is plugged in, service should not be attempted by anyone unfamiliar with the precautions necessary when working on this type of receiver. The following precautions should be observed: 1. Do not install, remove, or handle the picture tube in any manner unless shatterproof goggles are worn. People not so equipped should be kept away from the picture tube while handling. 2. When service is required, an isolation transformer inserted between power line and the receiver before ice is performed on a "HOT" chassis receiver. 3. When replacing a chassis in the receiver, all the devices must be put back in place, such as barriers, lic knobs, adjustment and compartment cover-shields, resistors, capacitors, etc. 4. When service is required, observe high voltage circuitry area. the original should be any serv-

(READING SHOULD NOT BE ABOVE OSmA)

protective nonmetalisolation

lead dress

in the

@!G;;;i.i:= AED
PLUG AS REQUIRED)

I

TEST ALL EXPOSED METAL

5. Always use the manufacturer's replacement components. Critical components as indicated on the circuit diagram should not be replaced by another manufacturer's, Furthermore, where a short circuit has occurred, replace those components that indicate evidence of overheating. 6. Before returning a serviced receiver to the customer, the service technician must thoroughly test the unit to be certain that it is completely safe to operate without danger of electrical shock, and be sure that no protective device built into the receiver by the manufacturer has become defective, or inadvertently defeated during servicing. Therefore, the following checks tinued protection of the customer should be performed for the conand service technician.

AC LEAKAGE

TEST LIMITS OUTLINED SHOCK HAZARD RETURNING THE

ANY MEASUREMENTS NOT WITHIN THE ABOVE ARE INDICATIVE OF A POTENTIAL AND MUST BE CORRECTED BEFORE RECEIVER TO THE CUSTOMER.

High Voltage This receiver is provided with a hold down circuit for clearly indicating that voltage has increased in excess of a predetermined value. Comply with all notes described in this service manual regarding this hold down circuit when servicing, so that this hold down circuit is operated correctly. Serviceman Warning With minimum BRIGHTNESS and CONTRAST, the operating high voltage in this receiver is lower than 34.0kV(36V), 34.0kV(32V). In case any component having influence on the high voltage is replaced, confirm that high voltage with minimum BRIGHTNESS and CONTRAST is lower than 34.0kV(36V), 34.0kV(32V). To measure high voltage use a High Impedance High Voltage meter. Connect (-) to chassis earth and (+) to the CRT Anode button. (See the following connection diagram.) Note: Turn power switch OFF to the Anode button is made. without fail before the connection

Leakage Current Cold Check With the AC plug removed from the 120V AC 60Hz source, place a jumper across the two plug prongs. Using an insulation tester (DCSOOV), connect one lead to the jumpered AC plug and touch the other lead to each exposed metal part (antennas, screwheads, metal overlays, control shafts, etc.), particularly any exposed metal part having a return path to the chassis should have a minimum resistor reading of 0.24MG and a maximum resistor reading of 12MG. Any resistance value below or above this range indicates an abnormality which requires corrective action. An exposed metal part having a return path to the chassis will indicate an open circuit.

2

j
PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in HITACHI television receivers have special safety-related characteristics. These 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 this Service Manual. Electrical components having such features are identified with an A mark in the schematics and parts list in this Service Manual. The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI-recommended replacement component, shown in the parts list in this Service Manual, may create shock, fire, X-radiation, or other hazards. Production safety is continuously under review and new instructions are issued from time to time. For the latest information, always consult the current HITACHI Service Manual. A subscription to, or additional copies of HITACHI Service Manuals may be obtained at a nominal charge from HITACHI Sales Corporation.

MSLXU

formed repairs can adversely affect the safety and reliability of the product and may void warranty. Consumers should not risk trying to do the necessary repairs and should refer to a qualified service technician. WARNING Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which may cause birth defects or other reproductive harm (California Health and Safety Code, Section 25249.5). When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with solder. Also, when soldering do not inhale any smoke or fumes produced.

SAFETY NOTICE USE ISOLATION TRANSFORMER WHEN SERVICING
Components having special safety characteristics identified on the parts list in this service manual and its supplements bulletins. Before servicing this product, it is important that service technician read and follow the "Safety Precautions" the "Product Safety Notices" in this Service Manual. For continued X-Radiation protection, replace original type or HITACHI equivalent type. byn and the and

CPT ANODE

picture tube with

CPT

POWER SOURCE
HIGH IMPEDANCE H.V. METER -CHASSIS GROUND

This television receiver is designed to operate on 120 Volts/GOHz, AC house current. Insert the power cord into a 120 Volts/GOHz outlet. NEVER CONNECT THE TV TO OTHER THAN FIED VOLTAGE OR TO DIRECT CURRENT. THE SPECI-

X-Radiation TUBE: The primary source of X-Radiation in this picture tube. The tube utilized in this chassis is structed to limit X-Radiation emissions. For Radiation protection, the replacement tube must type as the original HITACHI-approved type. receiver is the specially concontinued Xbe the same

When troubleshooting and making test measurements in a receiver with an excessive high voltage problem, avoid being unnecessarily close to the picture tube and the high voltage component. Do not operate the chassis longer than is necessary cause of excessive voltage. to locate the

This Service Manual is intended for qualified service technicians; it is not meant for the casual do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been trained to properly and safely repair complex products such as those covered by this manual. Improperly per-

MSLXU
SERVICING PRECAUTIONS
CAUTION: Before servicing instruments covered by this service data and its supplements and addenda, read and follow the SAFETY PRECAUTIONS on page 3 of this publication. NOTE: If unforseen circumstances create conflict between the following servicing precautions and any of the safety precautions on page 3 of this publication, always follow the safety precautions. Remember: Safety First. General Servicing Guidelines 1. Always unplug the instrument AC power cord from the AC power source before: a. Removing or reinstalling any component, circuit board, module, or any other instrument assembly. b. Disconnecting or reconnecting any instrument plug or other electrical connection. Connecting ic capacitor CAUTION: electrical 8. Always connect the test instrument ground lead to the appropriate instrument chassis ground before connecting the test instrument positive lead. Always remove the test instrument ground lead last. Use with this instrument only the test fixtures specified in this service data. CAUTION: Do not connect the test fixture ground strap to any heatsink in this instrument.

9.

c.

a test substitute in parallel with an electrolytin the instrument. A wrong part substitution or incorrect polarity installation of electrolytic capacitors may result in an explosion hazard. the picture tube anode.

Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by static electricity. 1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging wrist strap device, which should be removed for potential shock reasons prior to applying power to the unit under test. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge build-up or exposure of the assembly. Use only a grounded-tip ES devices. soldering iron to solder or desolder

d. 2.

Discharging

Test high voltage only by measuring it wih an appropriate high voltage meter or other voltage measuring device (DVM, FETVOM, etc.) equipped with a suitable high voltage probe. Do not test high voltage by "drawing an arc." Discharge the picture tube's anode by (a) first connecting one end of an insulated clip lead to the degaussing or kine aquadag grounding system shield at the point where the picture tube socket ground lead is connected, and then (b) touch the other end of the insulated clip lead to the picture tube high voltage output, using an insulated handle to avoid personal contact with high voltage. Do not spray chemicals assemblies. on or near this instrument or any of its

2.

3.

3.

4.

Use only an anti-static type solder removal device. Some solder removal devices not classified as "anti-static" can generate electrical charges sufficient to damage ES device. Do not use freon-propelled chemicals. electrical charges sufficient to damage These can generate ES devices.

4.

5.

5.

Unless specified otherwise in these service data, clean electrical contacts by applying the following mixture to the contacts with a pipe cleaner, cotton-tipped stick or comparable nonabrasive applicator: 10% (by volume) Acetone and 90% (by volume) ispropyle alchohol (90%-99% strength). CAUTION: This is a flammable mixture. Unless specified otherwise in these service data, lubrication of contacts is not required. Do not defeat any plug/socket B+ voltage which instruments covered by this service equipped. interlocks with data might be

6.

Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. (Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material.) Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed. CAUTION: Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of Your foot from a carpeted floor can generate static electricity Sufficient to damage an ES device.)

7.

6.

8. 7.
DO not apply AC power to this instrument electrical assemblies unless all solid-state are correctly installed.

and/or any of its device heat-sinks

4

1
General Soldering Guidelines 1. Use a grounded-tip, low-wattage soldering iron and appropriate tip size and shape that will maintain tip temperature within the range 500°F to 600°F. 2. Use an appropriate gauge of resin-core 60 parts tin/40 parts lead. Keep the soldering solder composed of 2. Replacement 1. Carefully 2. 3. 4. iron tip clean and well-tinned. 3. insert the replacement Carefully bend each IC lead against solder it.

MSLXU

Draw away the melted solder with an anti-static suction-type solder removal device (or with solder braid) before removing the IC.

IC in the circuit board. the circuit foil pad and

Thoroughly clean the surfaces to be soldered. Use a small wire-bristle (0.5 inch or 1.25 cm) brush with a metal handle. Do not use freon-propelled spray-on cleaners. Use the following desoldering technique. a. Allow the soldering iron tip to reach normal temperature (500°F to SOO'F). b. Heat the component lead until the solder melts. Quickly draw away the melted solder with an anti-static, suctiontype solder removal device or with solder braid. CAUTION: Work quickly to avoid overheating the circuit board printed foil.

Clean the soldered areas with a small wire-bristle brush. not necessary to reapply acrylic coating to areas.)

(It is

5.

"Small-signal" Discrete Transistor Removal/Replacement 1. Remove the defective transistor by clipping its leads as close as possible to the component body. 2. Bend into a "U" shape the end of each of three leads remaining on the circuit board. Bend into a "U" shape the replacement transistor leads.

3. 4.

6.

Use the following soldering technique. a. Allow the sodering iron tip to reach normal temperature (500°F to 600°F). b. First, hold the soldering iron tip and solder strand against the component lead until the solder melts. Quickly move the soldering iron tip to the junction of the component lead and the printed circuit foil, and hold it there only until the solder flows onto and around both the component lead and the foil. CAUTION: Work quickly to avoid overheating the circuit board printed foil or components. Closely inspect the solder area and remove any excess or splashed solder with a small wire-bristle brush.

Connect to replacement transistor leads to the corresponding leads extending from the circuit board and crimp the "U" with long nose pliers to insure metal to metal contact, then solder each connection.

Power Output Transistor Devices Removal/Replacement 1. Heat and remove all solder from around the transistor 2. Remove the heatsink mounting Carefully remove the transistor screw (if so equipped). from the circuit board.

leads.

c.

3. 4. 5. 6.

Insert new transistor Solder each transistor Replace heatsink.

in circuit board. lead, and clip off excess lead.

d.

Diode Removal/Replacement 1. Remove defective diode possilbe to diode body. 2. 3. Bend the two remaining board.

by clipping

its leads

as close as

leads perpendicularly

to the circuit

Observing diode polarity, wrap each lead of the new diode around the corresponding lead on the circuit board. Securely crimp each connection and solder it.

4.
Use Solding Iron to Pry Leads

IC Removal/Replacement Some Hitachi unitized chassis circuit boards have slotted holes (oblong) through which the IC leads are inserted and then bent flat against the circuit foil. When holes are the slotted type, the following technique should be used to remove and replace the IC. When working with boards using the familiar round hole, use the standard technique as outlined in paragraphs 5 and 6 above. Removal 1. Desolder and straighten each IC lead in one operation by gently prying up on the lead with the soldering iron tip as the solder melts.

5.

Inspect (on the circuit board copper side) the solder joints of the two "original leads". If they are not shiny, reheat them and, if necessary, apply additional solder.

MSLXU
Fuses and conventional Resistor Removal/Replacement Clip each fuse or resistor lead at top of circuit board hollow stake. Securely crimp leads of replacement l/8 inch from top. component around stake At Other Connections Use the following technique to repair defective copper pattern at connections other than IC Pins. This technique involves the installation of a jumper wire on the component side of the circuit board.

Solder the connections. CAUTION: Maintain original spacing between the replaced component and adjacent components and the circuit board, to prevent excessive component temperatures. Circuit Board Foil Repair Excessive heat applied to the copper foil of any printed circuit board will weaken the adhesive that bonds the foil to the circuit board, causing the foil to separate from, or "lift-off" the board. The following guidelines and procedures should be followed whenever this condition is encountered. In Critical Copper Pattern Areas High component/copper pattern density and/or special voltage/current characteristics make the spacing and integrity of copper pattern in some circuit board areas more critical than in others. The circuit foil in these area is designated as Critical Copper Pattern. Because Critical Copper Pattern requires special soldering techniques to ensure the maintenance of reliability and safety standards, contact your Hitachi personnel. At IC Connections To repair defective copper pattern at IC connections, use the following procedure to install a jumper wire on the copper pattern side of the circuit board. (Use this technique only on IC connections.) 1. Carefully remove the damaged copper pattern with a sharp knife. (Remove only as much copper as absolutely necessary.) 2. Carefully scratch away the solder resist and acrylic coating used) from the end of the remaining copper pattern. (if 1.

Insulated

Jumper

Wire

Remove the defective copper pattern with a sharp knife. Remove at least l/4 inch of copper, to ensure hazardous condition will not exist if the jumper wire opens. Trace along the copper pattern from both wire sides of the pattern break and locate the nearest component directly connected to the affected copper pattern. Connect insulated 20-gauge jumper wire from the nearest component on one side of the pattern break to the lead of the nearest component on the other side. Carefully crimp and solder the connections. CAUTION: Be sure the insulated jumper wire is dressed so that it does not touch components or sharp edges.

2.

3.

Frequency Synthesis (FS) Tuning Systems Always unplug the instrument AC power cord before disconnecting or reconnecting FS tuning system cables and before removing or inserting FS tuning system modules. The FS tuner must never be disconnected from the FS tuning control module while the power is applied to the instrument. When troubleshooting intermittent problems that might be caused by defective cable connection(s) to the FS tuning system, remove the instrument AC power as soon as the defective connector is found and finish confirming the bad connection with a continuity test. This procedure will reduce the probability of electrical overstress of the FS system semi-conductor components.

3.

Install Jumper Wire and Solder Bend a small "U" in one end of a small-gauge jumper wire and carefully crimp it around the IC pin. Solder the IC connection. Route the jumper wire along the path of the cut-away copper pattern and let it overlap the previously scraped end of the good copper pattern. Solder the overlapped area, and clip off any excess jumper wire.

4.

6

1

MSLXU

NOTE: These components are affixed with glue. Be careful not to break or damage any foil under the component or at the pins of the /Cs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.

Leadless Chip Components (surface mount)
Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chip capacitor or resistor board solder pads may have holes through the board, however the hole diameter limits standard resistor replacement to l/8 watt. Standard capacitors may also be limited for the same reason. It is recommended that identical chip components be used. Chip resistors have a three digit numerical resistance code -1st and 2nd significant digits and a multiplier. Example: 162 = 1600 or 1.6KSZ resistor, 0 = OQ (jumper). Chip capacitors generally do not have the value indicated on the capacitor. The color of the component indicates the general range of the capacitance. Chip transistors are identified by a two letter code. The first letter indicates the type and the second letter, the grade of transistor. Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number.

How to Replace Flat-IC -Required Tools* Soldering iron l iron wire or small awl l De-solder braids l Magnifier 1. Remove the solder from all of the pins of a Flat-IC by using a de-solder braid.
De-Solder Braid Soldering Iron

2.

Put the iron wire under the pins of the Flat-IC and pull it in the direction indicated while heating the pins using a soldering iron. A small awl can be used instead of the iron wire.
Iron Wire Awl

Component
1. 2. 3.

Removal

3.

Use solder wick to remove solder from component end caps or terminals. Without pulling up, carefully twist the component with tweezers to break the adhesive. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal.

Remove the solder from all of the pads of the Flat-IC by using a de-solder braid.

Chip Component
1. 2.

Installation

4.

Put a small amount of solder on the board soldering pads. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watt iron until solder flows. Do not apply heat for more than 3 seconds.

Position the new Flat-IC in place (apply the pins of the FlatIC to the soldering pads where the pins need to be soldered). Properly determine the positions Polarity Symbol of the soldering pads and pins by , correctly aligning the polarity symbol. ...

Chip Components
TYPE.

5.

Solder all pins to the soldering derino iron.

pads using a fine tipped sol-

TRANSISTOR 1ST DIGIT

lering `on

6. Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de-solder braid as shown in the figure below.
MH DIODE RESISTOR

Bridge Solder

Soldering Iron

7

MSLXU
TECHNICAL SPECIFICATIONS

POWER RATINGS 36UX59BKZ97 32UX59BKY97 36FX49BEZ95 32FX49BEY95 36CX39BEZ93 32CX39BEY93 ............ ............ ............ ............ ............ ............ .171 .167 .166 .156 .161 .151 Max. Max. Max. Max. Max. Max. Watts Watts Watts Watts Watts Watts

COLOR PICTURE TUBE 36UX59BKZ97 32UX59BKY97 36FX49BKZ95 32FX49BKY95 36CX39BEZ93 32CX39BEY93 ............. ............. ............. ............. ............. ............. .A90LPY30XOl .A80LJF30X(W) .A90LPY30XOl .A80LJF30X(W) .A90LPY30XOl .A80LJF30X(W)

CAUTION:

Below is an EXAMPLE only. See Replacement Parts List for details. The following symbol near the fuse indicates fast operating fuse (to be replaced). Fuse ratings appear within the symbol.

Example:

"RISK OF FIRE - REPLACE FUSE AS MARKED"

The rating of fuse F901 is 6.OA-125V. Replace with the same type fuse for continued protection against fire.

a

1
TECHNICAL
High Voltage Limiter Circuit Operation

MSLXU

CAUTIONS
Protection Circuit Operation Check

Check and Overvoltage

Adiustment Preparation 1. Connect a High Voltage Voltmeter between CPT Anode terminal (Anode capside) and Ground. 2. Set the AC input voltage to 120r3V. 3. Receive Circle Pattern or Broadcast Signal and set "BRIGHTNESS" and "CONTRAST" to maximum. Adjust the SCREEN VR so that Beam Current is le+O.l mA. (The voltage at ABL terminal (C747) should be 12V or less.)

CPT Anode Use the voltmeter which can indicate up to the first decimal point with an impedance of lOMS2 or more. Gl + + * Less than 12V

1

High Voltage Voltmeter (DC Voltage Divider)

-0 c---CPT Ground Wire -

1
DIgital Voltmeter

Adiustment Procedure 1. Check that the normal High Voltage and +B Voltage as below.

I

CHASSIS cz97,cz95, cz93 CY97,CY95, CY93

1 EHT+l kV 30.0kV 29.OkV

1 IB+-O.lmA 1.7mA 1.5mA

1

+B I 140+0.3v 140f0.3V

CPT

Anode Voltage Voltmeter (DC Voltage Divider)

CPT Ground Wire (TP701) I I Use the voltmeter impedance 1OMQ or mora with indication to the first decimal place.

2. Connect a 10KQ 1/8W resistor to both ends of D708 and check that power is turned off.
R736 D708

3. Disconnect the AC plug and remove the 10kB resistor. 9

CONTENTS
Contents
l

Pacle #
.................................................................................................................................................................... Control Operation .............................................................................................................. ............................................................................................ (refer to remote control for basic operation) 10 13 13 15 17 20 23 24 24 24 24 25 25 25

of Adjustments

Front Panel, Rear Panel and Remote 1. Front Panel Controls Front Panel Jacks and Connections

2. 3. 4. 5.
l

................................................ ..........................................................................................

Rear Panel Jacks ........................................................................................................................................................................ Rear Panel Connections ............................................................................................................................................................ The Remote To Control Your TV ................................................................................................................................................ Procedures .................................................................................................................................................................... ........................................................................................................................................................ ........................................................................................................................................

Adjustment I. 1. 2. 3. 4. 4.1 4.2 4.2.1 4.2.2 4.3 4.3.1 4..3.2 4.3.3 4.3.4 4.3.5 4.4 4.5 4.5.1 4.5.2 4.5.3 4.5.4 4.6 4.7 4.8 4.9 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4.17

Main Chassis

Adjustment Procedure

-Multi Master I2C Bus System Adjustment Adjustment Adjustment

Start-Up ...................................................................................................................................... .................................................................................................................................................... (1002) ....................................................................................................................................

Mode ............................................................................................................................................................ Procedure

Initial Setting of EEPROM PinP Adjustment Y Amplitude.. MTS Adjustment

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .................................... 26 26 1.~............1....,......~......,.................~......~.~.....,......~...~,~~.~..............~~~.~.....~.~........~............~....~...~....~~.~ 26 .......................................................................................................................................................... 26 26 27 27 27 ..2 8 28 28 28 .28 .28 28 29 29 29 29 29 29 29 30 30 30 30 .30 30 30 30 . . . . . . . . . . . . . . . . . . ..L......................................*...............*.........................................*.................... ........................................................................................................................................ .......................................................................................................................................... .......................................................................................................................................... ....................................................................................................................... ............................................................................................................................ .............................................................................................................................. (R605). ........................................................................................................ (R777) .................................................................................................................

Color Amplitude

............................................................................................................................................................

Input Level Adjustment Stereo VCO Adjustment Filter Adjustment Separation Adjustment

....................................................................................................................................................

SAP VCO Adjustment Cut-Off Adjustment Deflection Horizontal

(Picture Adjustment).

Circuit Picture Adjustment Center Adjustment.. Adjustment

Vertical Size and Phase Adjustment Side Pin Distortion Horizontal White Balance Size Adjustment Adjustment

(R755) ........................................................................................................................

.............................................................................................................................................. .......................................................................................................................................... ..............................................................................................................................................

Sub Black Level Adjustment Color Gain Adjustment Sub Contrast Adjustment.. Sub Color Adjustment Sub Tint Adjustment Sub Sharpness W/B G 0~ Adjustment W/B B CYAdjustment PinP Tint Adjustment PinP Sharp Adjustment Setting Explanation

. . ..*.*..............................................~..................*....*....................................*............................... .................................................................................................................................................... ........................................................................................................................................................ ............................................................................................................................................

Adjustment

...................................................................................................................................................... ...................................................................................................................................................... .......................................................................................................................................... ...................................................................................................................................................... .................................................................................................................................................

PinP H Position Adjustment..

II.

Function 1. 2.

........................................................................................................................................................................ of Memory Switch Functions ...................................................................................................................... 10

How to Set Memory Switch Setting Mode ......................................................................................................................

III.

Memory 1. Operation 1. 2. 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.7.1 2.7.2 2.7.3 2.7.4 2.7.5 2.7.6 2.7.7

Initialize.. Memory

...................................................................................................................................................................... Initialize Operation Check ................................................................................................................................

31 31 31 31 .31 31 32 33 33 33 33 33 33 34 35 35 36 36 37 .38 .38 38 39 .39 39 39 39 39 39 39 39 40 40 40 40 40 .40 40 41 43 45 46 46 47

IV.

Check.. ...................................................................................................................................................................... AFC Operation Channel Channel Check .................................................................................................................................................... Circuit Operation Selection Check .................................................................................................................

Selection Up/Down

..........................................................................................................................................

CH Up/Down Volume

..................................................................................................................................................................

Up/Down.. ..........................................................................................................................................................

Power On/Off.. ................................................................................................................................................................ Input.. .............................................................................................................................................................................. Menu.. ............................................................................................................................................................................. Menu Mode (using Remo-con) Program Parental ...................................................................................................................................... Set Up Mode .................................................................................................................................................................. Mode.. .............................................................................................................................................................. Control.. ............................................................................................................................................................ check) ..............................................................................................................................

Clock Mode (clock operation Sound Mode Circuit

Picture Mode .................................................................................................................................................................. .................................................................................................................................................................. Adjustment Operation Check ..................................................................................................... Circuit Operation Auto Link Mode .............................................................................................................................................................. Picture High Voltage FBT Protection Limiter Circuit Operation Circuit Operation Check and Over Voltage Protection

V.

Deflection 1. 2. 3. 4. 5. 6.

Check.. ....................... .38

Check .......................................................................................................................

Check +18V Short Protection Check +14V Short Protection Load Short Protection Operation Check

Circuit.. ............................................................................................................................ Circuit.. ............................................................................................................................ Check ...........................................................................................................

Circuit Operation

Weak Electric Field Check.. ............................................................................................................................................ .................................................................................................................................................... .............................................................................................................................................. Recall) .............................................................................................................................. Direct Channel Selection..

VI.

Remo-con 1. 2. 3. 4. 5. 6. 7. 8. 9.

Last LST-CH (Last Channel Exit/Recall/CS

Mute.. .............................................................................................................................................................................. ................................................................................................................................................................ PinP ................................................................................................................................................................................. Move.. ............................................................................................................................................................................. Swap.. ............................................................................................................................................................................. Freeze.. ........................................................................................................................................................................... PinP Ch .......................................................................................................................................................................... Initialize (2). ................................................................................................................................................................. Adjustment/Common Adjustment Service Adjustment.. ...............................................................................................

VII. VIII.

Memory 1. 1.2 1.3 1.4 1.5 2.

Final Assembly

Purity Convergence Purity Adjustment Purity Adjustment Static Convergence Dynamic Convergence Focus Adjustment

.................................................................................................................................... ........................................................................................................................... ..............................................................................................................................

(Using Microscope). (Hand Operation) Adjustment Adjustment Instruments

.................................................................................................................................... ................................................................................................................................ ................................................................................................................................ 11

..........................................................................................................................................................

IX.

Matching

Check with other

1. 2. 3. 4. 5. 6. 7. X. 1. XI.

VIDEO: VIDEO:2 VIDEO:3

1 input Terminal Input Terminal Input Terminal

Matching Matching Matching

Check.. ................................................................................................................... Check Check ..................................................................................................................... .....................................................................................................................

.47 .47 .47 47 47 47 47 47 47 48 48 48 48 49 50

Sin:1 Input Terminal Sin:2 Input Terminal Component

Matching Matching

Check ............................................................................................................................ Check ............................................................................................................................

Input Check ................................................................................................................................................

Audio Out Level Check .................................................................................................................................................. Polarity Check ................................................................................................................................................................ Check .............................................................................................................................................................. Receiving Check Check ......................................................................................................................

Safety Check .............................................................................................................................................................................. MTS Operation 1. 2. 3.

-STEREO&A STEREO

Broakcast Separation

MTS Mode Check .......................................................................................................................................................... .......................................................................................................................................... for Delivery .................................................................................................................................................................... Position List ..........................................................................................................................................................

XII. XIII.

Setting

Adjustment

12

FRONT PANEL CONTROLS

FOR 32UX59B AND 36UX59B
FRONT VIEW

0
Ing;;I;it 5

@@IO
Volume Buttons r-5 Channel Buttons r-5 CHv Power Button I OH+ POWER A

r
Dual Tuner PIP OPEN DOOR

INPUT VOL. "OLI 0000000 MEN" EXIT 4 b

a MN" AL?).
BUTTON

1

@Remote Infrared

Control Sensor

V
NPUT "OLI CH-oki+ VOL. POWER ooooooo- b v A MEN" 4 ENT
@Video:

FRONT INPUT JACKS

I

,NPUT I 3

t/MONO R "lDE0AUDIO L J
3 Input --I 15.

0

A detailed

explanation

of the circled

numbers

is on page

13

FRONT PANEL CONTROLS FOR 32CX398, 32FX49B, 36CX39B AND 36FX49B
FRONT VIEW

32FX49B 1111111111111-1111

and 36FX49B

models 8

Dual Tuner PIP 8
1 32CX39B 36CX39B and models @ Remote Infrared

I
Control Sensor

0 3
Volume Buttons

0 4
Channel Buttons ,

(
!da I CURSOR

r

Power Button

5 0
@ Remote Infrared

0 I I
Control Sensor

A detailed

explanation

of the circled

numbers

is on page

15

14

FRONT PANEL JACKS AND CONNECTIONS

01
2 0

MENU Button This button allows you to enter the MENU, making

it possible

to set TV features

to your preference

without

using the remote.

INPUT/EXIT Buttons Press this button to select the current antenna or VIDEO source. Your selection button also serves as the EXIT button when in MENU mode. VOLUME Level Press these buttons

is shown in the top right corner of the screen. This

3 0 4 0

for your desired

sound level. This volume

ievel will be displayed

on the TV screen.

CHANNEL Selector Press these buttons until the desired

channel

appears

in the top right corner of the TV screen. Press the INPUT

NOTE:

Your HITACHI TV will appear to be turned off if there is no video input when VIDEO Source is selected. button until the normal broadcast picture appears. If the picture does not appear, the power is OFF.

5 0 6 0 7 0

POWER Button Press this button to turn the TV on or off. REMOTE CONTROL INFRARED Sensor Point your remote control at this area when selectiong

channels,

adjusting

volume, etc.

FRONT INPUT JACKS (36/32UX59B models) Use these audio/video jacks for a quick hook-up to a camcorder or VCR to instantly view your favorite show or new recording. Press the JNPUT button until VIDEO:3 appears in the top right corner of the TV screen. If you have mono sound, insert the audio cable into the left channel jack.

15

-&3 cl The front panel jacks are provided examples:

FRONT PANEL JACKS AND CONNECTIONS 36UX59B AND 32UX59B
as a convenience to allow you to easily connect a camcorder or VCR as shown in the following

Video Camera

Video

Camera

OUTPUT

Insert audio cable into left channel for mono sound

INPUT

(Back of VCR)

NOTE:

Completely insert connection back may be abnormal.

cord plugs when connecting

to front panel jacks.

If you do not, the picture that is played

16

REAR PANEL JACKS (32UX596,32FX49B, 36UX59B AND 36FX49B)

.i* L-l

I

. ri I-1 . l-1 t I I L1 61 . l-j+ I 4

VHF/UHF AN TENNA TERMINALS

36FX48B and 32F=X48B

u

6

TOC@

`ER

---

ANT A

I

I

r
INPUT VIDEO 1

I
INPUT 2 VIDEO I AUDIO TO HI-F!

1 WEAK I I . I `i I

m---11---1

36" -----------q only

:; : ;::
,:>

,M%T ~~

,M%Y ail

L I'--~~~----------------S-VIDEO1

Qj AUDIO

Qj AUDlO

Qj AUDIO

@@

lNPUT

TERMINALS OUTPUT ANTENNA VHF/UHF TERMINALS TERMINALS

36UX59B and 32UX59

c
II

ANT B

TO CONVERTER

ANT A

36" only

7

0 6

GEOMAGNETISM CORRECTION

: I

INPUT

TERMINALS

@
is on page 19.
AUDIO TO HIFI OUTPUT TERMINALS

A detailed

explanation

of the circle numbers

REAR PANEL JACKS (32CX39B AND 36CX39B)

VHF/UHF ANTENNA TERMINALS

I

II

INPUT VIDEO 1

VHF / UHF

I I

-.-,INPUT 2 VIDEO AUDIO TO HI-FI I I I

sT;;oNG - - rwN EARTH MP,G.~ CORRECT m

- - - .L - s

I 6 GEOMAGNETISM CORRECTION : I
I

I --------------9--------

@

INPUT TERMINALS

OUTPUT

TERMINALS

A detailed

explanation

of the circle numbers

is on page 19.

18

REAR PANEL JACKS
@ Antenna Input (32CX39 AND 36CX39B) The VHF/UHF terminal can be used for normal TV, cable TV (CATV), video game, etc. Antenna Inputs (36/32FX49B and 36/32UX59B models) The remote control allows you to switch between two separate 750hm RF antenna inputs, ANT A and ANT B, ANT A input can be displayed as a main picture or sub-picture. ANT B can only be displayed as a main picture. (ANT B cannot be displayed as a subpicture.) The antenna output labeled `70 CONVERTER" allows ANT A connection to pass directly to a different source such as a cable box. @ Audio/Video Inputs The INPUT button will step through each video source and antenna source input each time it is pressed. Use the audio and video inputs to connect external devices, such as VCRs, camcorders, laserdisc players, etc. (If you have mono sound, insert the audio cable into the left channel jack.) YCBCR Input: 2 (32UX598 and 36UX59B models This input provides Y-CBCR jacks for connectiong 36/32FX49B and 36/32CX39B only) equipment with this capability such as DVD player. I

@

I

NOTE:

models do not have Y-CBCR Inputs.

4 0 5 0

Audio to HI-Fl These jacks provide variable audio output to a separate stereo amplifier. With this connection, the audio to the stereo can be controlled by the television's main volume. Use these jacks for the SURROUND Left and Right channels. S-Video Inputs 1, 2 for 36/32UX59B and 36/32FX49B models and Input 1 for 36/32CX39B connecting equipment with S-Video output capability. models provide S-Video (Super Video) jacks for

6 0

Goemagnetism Correction (36" models only) The effects of geomagnetism may cause an uneven (partially) colored picture depending on the direction the TV is facing. Adjust the TV as follows for best performance: 1. Turn the Power "OW'. 2. Decide on the installation position and direction of the TV. Check the direction the TV is facing at this time. 3. Set the DIRECTION and STRENGTH switches (on back of the TV) according to the direction of the screen as shown in the table.
TV

I

FACING SCREEN DIRECTION North Northeast East Southeast South

DIRECTION N `E/w E/W "E/w S

SWITCH 1

STRENGTH STRONG WEAK WEAK WEAK STRONG

"If the Screen is facing a Northerly direction, set to "N". *`If the Screen is facin

4. After setting the switches, place the TV in the decided location. 5. After relocating the TV, turn the power "ON" and check to make sure that the screen color (especially at the corners) is even. Depending on the installation location (especially where it is susceptible to goemagnetism, for example, in a reinforced concrete building), in this case, set the DIRECTION and STRENGTH switches to set the optimum picture. 6. In certain areas, if the screen points North or South, color unevenness may be reduced when the STRENGTH switch is set to STRONG rather than WEAK. NOTE: If you move your TV, the DIRECTION and STRENGTH switches may need to be reset. I

TIPS ON REAR PANEL CONNECTIONS
The S-Video connections are provided for high performance laserdisc players, VCRs etc. that have this feature. connections in place of the standard video connection if your device has this feature. COMPONENT: y*cBcR connections are provided for high performance components, connections in place of the standard video connection if your device has this feature. Ghen using the Ysc B c R input jacks, connect has only one audio output your components sound), connect 19 such as DVD players. Use these Use these

audio output to the TV's Input 2 Left and Right Audio inputs jack. it to the left audio jack on the television. for additional information on connecting your hook-up cables.

If your device

(mono

Refer to the operating

guide of your other electronic

equipment

.&&J2 L-4 -

REAR PANEL CONNECTIONS
Outside antenna or cable TV coaxial cable

(32UX595 AND 36UX59B)

1
+ f-

Z-Way splitter

signal

Cable TV Box

DVD Player, Laserdisc player,

etc,

I

-* l3Eloo0 0 111111 HI 111111 0 -0
1 I I

I

Stereo System Amplifier

Typical full feature setup.

Follow connections

that pertain to your personal

entertainment

system.

20

REAR PANEL CONNECTIONS

(36FX49B AND 32FX49Bl

ET 4Ll

1
+

Outside antenna or cable TV coaxial cable

Z-Way splitter

signal

r

.

Cable TV Box Optional see tips on page 19 Optional see tips on page 19

to

1

Laserdisc player, VCR, camcorder, etc.

1

INPUT 0-

1 0

FIlzza
0 oEYLloo 0 0

0

111111 111111 (-J n"

Stereo System Amplifier

Typical

full feature setup.

Follow connections

that pertain to your personal

entertainment

system.

21

.&3 LA

REAR PANEL JACKS (32CX39B AND 36CX39B)

Outside antenna or cable TV coaxial cable

C-2-Way signal splitter

I
Optional see tips on page 19 Laserdisc player, VCR, camcorder, etc.

9$ PI p$ii#$;
INPUT

Stereo System Amplifier

Typical full feature setup. Follow connections

that pertain to your personal

entertainment

systems.

22

THE REMOTE TO CONTROLYOUR

TV

I
HELP PIP PIP CH SWAP MOVE FRZ

POWER

HELP 000 PIP

PIP CH SWAP MOVE

TV/VCR FRZ

(---

P4Us&

omm (zluxmo
INPUT SLEEP omo

omm
INPUT omo

SLEEP

HITACHI
cLu4111uI

HITACHI
CLU-4111 u

23

MSLXU
I. MAIN CHASSIS ADJUSTMENT 1. Multi Master PC Bus System MSLXU Chassis uses 1% Bus control system. Fig. 1 shows this control system. Fig. 1
(SLAVE) 1 POI r GreenGain

TABLE 1 Adjustment Code
Code Name 1 Adjustment Mode 1Adjustment Data 1 Item Remark 1 .yh'ra,t,

A02

[ SAPVCO ad

1001 (Master) controls other ICs (Slave). Adjustment data is memorized in 1002 (EEPROM). 1001 reads this data and controls other ICs (slave). Adjustment items applied in this chassis are shown in Table 1. 2. ADJUSTMENT PROCEDURE-START UP

pi0 p, , p 12 pt 3 ~14 ~15 PI6 PI7 PI6 P19 P20

1 Sub Bright adjustment 1 Sub Color adjustment I Sub Tint adjustment 1 Sub Sharpness adjustment 1 W/B G 0~adjustment I W/B I3 a adjustment PinP H Positionadjustment PinPTint adjustment PinP Contrast adjustment PinP Color-Satadjustment PinP Sharp adjustment

1 1 1 1 1

63-O 63-O 63-O 63-O 127-O 127-O 63-O 63-O 127-O 127-O 3-o

1 1 1 1 1 1

4-7 4.10 4.11 4.12 4.13 4.14 4.15 4.16 4-2-2 4-2-l 4-17

1 1 1 1 1 1

23 24 46 IO 066 077 0 61 050 042 0

* This data is an approximate service code data. Fine adjustment must be done using the specified test procedure and adjustment tools. 2-2 Changing Data and Adjustment Code When the CTV set is in adjustment mode, the cursor A,v,d,, and MENU keys of the customers remo-con will be the adjustment keys. A. Use any Hitachi remote control when making an adjustment

2-l How to Get to Adjustment Mode Chassis adjustment can be done by using the front control panel buttons with CTV set turned off. Press "POWER" and "INPUT" keys at the same time, and hold for more than 3 seconds. The CTV set turns on in adjustment mode with OSD as follows.

cl
MENU

A,v keys are used for changing adjustment code. 4,, keys are used for changing data. MENU key is used for changing "Cut Off Mode'T'Normal mode." (Refer to cut off adjustment) `70 Escape from Adjustment Mode" Press "POWER" button of remo-con or front panel once at anytime. Then set returns to normal state.

24

M9LXU
3. ADJUSTMENT MODE

1. Before turning ON the set, press and hold the POWER button and INPUT button for about 3 seconds. 2. After 3 seconds, a small square will appear in the left center of the screen. There are two different displays, depending upon how long the POWER and INPUT buttons are pressed and held. One shows A and D for audio adjustment, and the other shows P and D for the picture adjustment.

Decrease Data Value

Increase Data Value

-Change Selection Match front panel control cursor to remote control (Down) cursor,

PO0

ElDO00 El
D = Data value P = Picture A = Audio

4. ADJUSTMENT PROCEDURE 4-l Initial setting of EE Prom (1002) Adjustment Preparation Add +12V to @ point and check @ point is 5v+o.3v Note: Keep adding +12V more than 5 seconds.

+

+

@J

1001

3. To activate the picture adjustment mode, input a data value of 30 (D030), using the front panel cursor +,, before any of the picture adjustments can be adjusted.

COOT

coo1

Adiustment procedure (I) Receive circle pattern or broadcast signal. (2) Short 1001 pin #31 to GND. ROOF

PO0 DO00 /
The same for the audio adjustment. To activate the adjustment, you need an input data vatue of 20 before any of the audio adjustments can be adjusted.

(3) Check following OSD appears
AUTOLINK 1

4. To make a selection, you have to use the CURSOR keys on front control panel.
Input/Exit

(4) Short 1001 pin #33 to GND, momentary.

FRONT PANEL CONTROLS

Bum

L---lG-lA

,
4

Volume Buttons

Channel

,
b
I

Butions

,
Power

r

PW/er Button

INPUT

V/oL-

VOL+

CH-

CH+

II

I
(5) Check receiving channel goes to 03ch. Other checking method: Check TPlO is Y-l" (About 5V) Before EEPROM initial and "L" (About OV) after EEPROM initial. 1001 changes TPlO to "L" after EEPROM initial operation.

MENU

0000000
EXIT

v
1

A
I

I MENU-Ir
:

CURSOR

(6) Delete short. 25

MSLXU
4-2 PinP ADJUSTMENT 4-2-l Color amplitude Adiustment Preparation (1) Input red pattern signal to Video:l. 4-3 MTS ADJUSTMENT 4-3-l Input Level Adjustment Adjustment Preoaration (1) Apply a signal to F/E Ul 01. IF output terminals of Main PWB using the circuit shown below. And connect the AGC terminal @ of UlOl to GND with a lOOn resistor.
Note : Video signal and Audio Signal should be synchronized.

0.15v (21 IRE

(2) Turn CTV set ON. (3) Select PinP adjustment code, "P19." (4) Connect oscilloscope to pin @ of PIPA connector base. Adiustment Procedure (1) Change data of "P19" so that the amplitude of main and sub signal level are the same.
Main
SYNC IN

IF modulator (sonoutput) lp=4575MHz fs=41,25MHz

IF modulator output signal waveform (Color bar or all white)

4-2 Y amplitude Adiustment Preparation (1) Input 5 step signal to Video:l.

Max.

T
f

100 IRE

40 IRE IF modulator output level and P/S P=105dBu (509 termination) S level; -3dB to P level At this time, S/N ratio of F/E video output is 45dB or less.

(2) After adjustment of color amplitude, connect oscilloscope to pin @I of PIPA connector base. (3) Select PinP adjustment code "P18." Adiustment Procedure (1) Change data so that the amplitude of main and sub signal white peak level are the same.
Main $ Sub

26

MSLXU
Sound modulation condition: Noise reduction encoder: ON Stereo signal; @ R=O (L only), 300Hz, 30% modulation (see note) @ R=O (L only), 3kHz, 30% modulation (see note) Monaural signal; @ Monaural, 400Hz, 100% modulation (PRE-EN Off) SAP signal; @ SAP, 300Hz, 30% modulation (see note) (2) Connect AC voltmeter Vo to IS01 pin @. Use the AC voltmeter of Matsushita model VP-95OC or equivalent. (3) Apply +9V to 1501, 1402 (add +9V to pin @ and 12V to pin @ of PNH2 connector) (4) Same as item 4-1 (1). (5) Select adjustment code "A04" Adiustment Procedure (1) Select sound input @ and adjust the data "A04" to Vo= 500mVrms-t-1OmVrms at IS01 pin @ . 4-3-2 Stereo VCO adjustment Adjustment Preparation (1) Same as items 4-3-l (3) and 4-l(1). (2) Connect a frequency counter to IS01 pin 0. Use 1 :I Probe. (Probe standard Rirl Ma, Ci I 15pF) (3) Should be no signal in pin @ (ISOl). (4) Connect capacitor (lOOpF/16v) as it is shown. (5) Select adjustment code "A01 .`I 4-3-3 Filter Adjustment Adjustment Preparation (1) Set capacitor 100 ,~uF/16V as it is shown. (2) Apply the signal to IS01 pin @ with the circuit as it is shown.

@ SG output @ Frequency f=l573kHz @Signal

signal

spec. (Sine wave)

Level

V=l OOmVrms

(3) Connect an AC voltmeter or oscilloscope to IS01 pin @. (4) Select adjustment code "A03." Adjustment Procedure (1) Adjust the data "A03" so that the voltage of IS01 @pin becomes minimum by q,, keys. 4-3-4 Separation Adjustment (The adjustment of items 4-3-l and 4-3-3 must be completed first) Adiustment Preearation (1) Use the same circuit as input level adjustment 4-3-l (1). (2) Connect an AC voltmeter to IS01 pin ?!!.) or connect an oscilloscope. (3) Select adjustment code "A05" and set data "0032". Adiustment Procedure (1) Select input signal 0 and select adjustment code "A05". Adjust by d,, keys so that 300Hz level becomes minimum (L separation adjustment) (2) Select input signal @ and select adjustment code "A06". Adjust by d,, keys so that 3KHz level becomes minimum (H separation adjustment). (3) Repeat (1) and (2). Adjustment precision: within +ldB from minimum point.

R103 0 CS06 IS01

100/.&F/l

6v

Adjustment Procedure (1) Adjust the data "AOf" to set 15.73+0.1 KHz by 4) keys. (2) Delete capacitor (1 OOpF/16v)

27

MSLXU
4-3-5 SAP VCO Adjustment Adjustment Preparation (1) Connect a frequency counter to IS01 pin @ . (2) Select adjustment Code "A02". (3) Connect same circuit as in item 4-3-2(.5). Adiustment Procedure (1) Adjust the data "A02" by d,F keys so that the frequency is 78.67+0.5KHz. 4-4 Cut-Off Adjustment (Picture Adjustment) Adjustment Preparation (1) Connect an oscilloscope at R, G, B output. (2) Receive circle pattern signal. 4-5-2 Vertical Size and phase Adjustment (R605) Adiustment Preoaration (1) Apply heat-run 5 minutes or more after the power is turned on. (2) Receive circle pattern signal, and set CONTRAST to maximum and others to center. (3) The set should face the north or south direction. Adiustment Procedure (1) Adjust vertical center and size so that the outer circle of the circle pattern is like the figure below by using A,v,(,F keys and VR "R605".
V Center -+ Adjustment V Size -+ VR "R605" code "PO7"

i) Standard

Condition

ii) When the picture center is above CPT center at V center minimum.

Adiustment Procedure (1) Select adjustment code "PO3" and press "MENU" button. (2) Use the cursor key d,F to adjust the red cut-off until the amplitude of the red output waveform is 2.5V+O.lV as shown below. Adjustment for G and B are the same procedure as R cut-off adjustment. The only difference is the data for G cut-off is "PO4" and B cut-off is "PO5." 2.5WO.l v ov 4-5 Deflection Circuit Picture Adjustment 4-5-l Horizontal Center Adjustment Adiustment Preparation (1) Apply heat-run 5 minutes or more after the power is turned on. (2) Receive circle pattern signal. (3) Set CONTRAST to maximum and others to center. (4) Select adjustment code "PO6". Adjustment Procedure (1) Adjust horizontal center so that difference of right and left size marker is within 0.5 by adjustment code "PO6", using d,F keys.

32": 1I2 of the width of outer circle comes to the screen. 36": Inner circle comes in contact with the bottom and top of the screen.

When the picture center is above CPT center, adjust so that the bottom of the outer circle comes in contact with the bottom of the screen.

4-5-3 Side pin distortion adjustment (R777) Adjustment Preoaration (1) Receive crosshatch signal and set CONTRAST to maximum. Adjustment Procedure (1) Adjust R777 so that the line of the right and left is straight. spec. DL, DR 5 5mm (for 32V) spec. DL, DR I 7mm (for