Hitachi pa0138 schematic

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No. 0138

27GX01B-501

SERVICE MANUAL

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27GX01B-511

R/C:

CLU-351U

CAUTION: Before servicing this chassis, it is important that the service technician read the “Safety

Precaution” and “Product Safety Notices” in this Service Manual.

This television will display television Closed

Captioning ( or ) in accordance

with paragraph 15.119 of the FCC rules.

CONTENTS

SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

PRODUCT SAFETY NOTICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

POWER SOURCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

SERVICE NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

CIRCUITS AND BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . 32

PARTS IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

PARTS LIST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

SOLID STATE COLOR TELEVISION

JUNE 2000 HHEA-MANUFACTURING DIVISION

SAFETY PRECAUTIONS

NOTICE: Comply with all cautions and safety-related

notes located on or inside the cabinet and on the chasis or picture tube.

WARNING: Since the chasis of this receiver is connected to one side of the AC power supply during operation, whenever the receiver is plugged in, service shoul d 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 should be inserted between power line and the receiver

before any service is performed on a “HOT” chassis receiver.

3. When replacing a chassis in the receiver, all protective devices must be put back in place, such as barriers, nonmetallic knobs, adjustment and compartment covershields, isolation resistors, capacitors, etc.

4. When service is required, observe the original lead dress in the high voltage circuitry area.

Leakage Current Hot Check

Plug the AC cord directly into a 120V 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.). Any current measured must not exceed 0.5 milliamps.

(READING

SHOULD NOT BE

ABOVE 0.5mA)

DEVICE UNDER

TEST

EXPOSED METAL

2-WIRE CORD

ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED)

TEST ALL

SURFACES

LEAKAGE

CURRENT

TESTER

EARTH

GROUND

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 has become defective, or inadvertently defeated during servicing.

Therefore, the following checks should be performed for the continued protection of the customer and service technician.

Leakage Current Cold Check

With the AC plug removed from the 120V AC 60Hz source, place a jumper across the two plug prongs. Turn the AC power switch ON. Using an insulation tester (DC500V), 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

0.24MΩ and a maximum resistor reading of 12MΩ. Any

resistance value below or above this range indicates an abnormality which requires corrective action. An exposed metal part not having a return path to the chassis will indicate an open circuit.

AC LEAKAGE TEST ANY MEASUREMENTS NOT WITHIN THE LIMITS

OUTLINED ABOVE ARE INDICATIVE OF A POTENTIAL SHOCK HAZARD AND MUST BE CORRECTED BEFORE RETURNING THE RECEIVER TO THE CUSTOMER.

High voltage

This receiver is provided with a hol d 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, CONTRAST, SHARPNESS, and COLOR, the operating high voltage in this receiver is lower than 28.30kV ±1.25kV. In case any component having influence on the high voltage is replaced, confirm that high voltage with minimum BRIGHTNESS, CONTRAST, SHARPNESS, and COLOR is lower than 28.30kV ±1.25kV. To measure high voltage use a High Impedance High Voltage meter. Connect (-) to chassis earth and (+) to the CRT ANODE button. (See the connection diagram on page 4.)

Note: Turn power switch OFF without fail before the connection to the Anode Button

- 2 -

Important Safety Notice . . . . . . . . . . . . . . . . . . 2

Safety Precautions . . . . . . . . . . . . . . . . . 2

Product Safety Notice . . . . . . . . . . . . . . . . . . . . 4

Horizontal Oscillator Disable Circuit . . . . 5

Receiver Feature Table . . . . . . . . . . . . . . . . . . . 6

Location of Controls (Receiver)

Receiver Front Control Panel . . . . . . . . . 7

Location of Controls (Remote). . . . . . . . . . . . . 8

Disassembly for Service. . . . . . . . . . . . . . . . . 13

Disassembly for CRT Replacement . . . . . . . . 13

Chassis Service Adjustment Procedures . . . 14

131.0V B+ Voltage Confirmation . . . . . 14

Source Voltage Chart . . . . . . . . . . . . . . 14

B+ 5V Source Voltages. . . . . . . . . . . . . 14

MPU 5V . . . . . . . . . . . . . . . . . . . . . . . . 14

Stand-by 5V . . . . . . . . . . . . . . . . . . . . . 14

B+ 9V Source Voltage . . . . . . . . . . . . . 14

B+ 12V (Stand-by) . . . . . . . . . . . . . . . . 14

High Voltage Check . . . . . . . . . . . . . . . 14

Purity and Convergence Procedures . . . . . . 15

Service Adjustments

(Electronic Control). . . . . . . . . . . . . . . . . . 28

Sub-Brightness. . . . . . . . . . . . . . . . . . . 28

Sub-Contrast. . . . . . . . . . . . . . . . . . . . . 28

Tint/Color Adjustment . . . . . . . . . . . . . . 28

Color Temperature Adjustment. . . . . . . 29

Horizontal Centering. . . . . . . . . . . . . . . 30

MTS Circuit Adjustment . . . . . . . . . . . . 30

Clock Adjustment (S7) . . . . . . . . . . . . . 31

Vertical Size . . . . . . . . . . . . . . . . . . . . . 31

Service Adjustments

(Mechanical Controls). . . . . . . . . . . . . . . . 31

Focus (Part of T551). . . . . . . . . . . . . . . 31

Audio Signal Path Block Diagram . . . . . . . . . 32

Video-Chroma Signal Path

Block Diagrams. . . . . . . . . . . . . . . . . . . . . 33

IC101 VCJ IN/OUT Pins and Functions . . . . . 34

IC001 MPU IN/OUT Pins and Functions. . . . . 35

Components Identification . . . . . . . . . . . . . . . 36

Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Serviceman Mode (Electronic Controls) . . . . 18

Entering Serviceman Mode . . . . . . . . . 18

Toggle between Modes. . . . . . . . . . . . . 18

Exiting the Serviceman Mode. . . . . . . . 18

Sub-Data Adjustment . . . . . . . . . . . . . . 19

Cut-Off Adjustment. . . . . . . . . . . . . . . . 19

Pin Cushion Adjustment . . . . . . . . . . . . 20

MTS Adjustment. . . . . . . . . . . . . . . . . . 20

PIP Adjustment. . . . . . . . . . . . . . . . . . . 21

Options Adjustment . . . . . . . . . . . . . . . 22

Comb Filter Adustment. . . . . . . . . . . . . 23

To Check Purity . . . . . . . . . . . . . . . . . . 24

Helpful Hints . . . . . . . . . . . . . . . . . . . . . 24

Instructional Flow Chart

for Serviceman Mode . . . . . . . . . . . . . . . . 25

- 3 -

PRODUCT SAFETY NOTICE

HIGH

IMPEDANCE

H.V. METER

CRT ANODE

CHASSIS GROUND

CRT

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 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.]

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 performed 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. Al so, when soldering do not inhale any smoke or fumes produced.

SAFETY NOTICE

USE ISOLATION TRANSFORMER

WHEN SERVICING

X-Radiation

TUBE: The primary source of X-Radiation in this receiver

is the picture tube. The tube utilized in this chassis is specially constructed to limit X-Radiation emissions. For continued X-Radiation protection, the replacement tube must be the same type as the original HITACHI-approved type.

When troubleshooting and making test measurements in a receiver with excessive high voltage problem, avoid being unnecessarily close to the picture tube and high voltage components.

Components having special safety characteristics identified by on the parts list in this service manual and

its supplements and bulletins. Before servicing this product, it is important that the service technician read and

follow the “Safety Precautions” and the “Product Safety Notices” in this Service Manual.

For continued X-Radiation protection, replace picture tube with original type or HITACHI equivalent type.

POWER SOURCE

This television receiver is designed to operate on 120Volt/ 60Hz, AC house current. Insert the power cord into a 120Volts/60Hz outlet.

NEVER CONNECT THE TV TO OTHER THAN THE SPECIFIED VOLTAGE OR TO DIRECT CURRENT.

Do not operate the chassis longer than is necessary to locate the cause of excessive voltage.

- 4 -

Service Notes

IMPORTANT: To protect against possible damage to

the solid state devices due to arcing or static discharge, make certain that all ground wires an d CRT DAG wire are securely connected.

Equipment needed to check the disabled circuit:

1. Voltmeter (0 - 200V scale)

2. High Voltage Meter (0 - 50kV)

CAUTION: The power supply circuit is above earth ground and the chassis cannot be polarized. Use an isolation transformer when servicing the Receiver to avoid damage to the test equipmen t or to the chassis. Connect the test equipment to the proper ground ( ) or

( ) when servicing, or incorrect voltages will be measured.

WARNING: This Receiver has been designed to mee t or exceed applicable safety and X-ray radiation protection as specified by government agencies and independent testing laboratories.

To maintain original product safety design standards relative to X-ray radiation and shock and fire hazard,

parts indicated with the s ymbol must be replaced with identical parts. Order parts from

the manufacturer’s parts center using the parts numbers shown in t his service manual, or provide the chassis number and the part reference number.

For optimum performanc e and reli ability, all other parts should be replaced with components of identical specification.

on the schematic

Horizontal Oscillator Disable Circuit

3. Variac or Isolation Transformer

Procedure:

1. Tune in a station to verify that the horizontal is

in sync.

2. Obtain a Monoscope pattern or a signal generator

crosshatch pattern

3. Set Bright and Picture level to zero (0).

4. Turn the Receiver OFF. Connect a jumper across

IC803 pin 3 and pin 4. Apply +9V DC to cathode of

D001.

5. Reduce the AC supply voltage to approximately

45V. Connect the high voltage meter to the CRT

anode. (H.V. button).

Note: Use the Dag Ground (C10 on the CRT Board)

to connect the (-) lead of the meter.

6. Turn the Receiver ON. Slowly increase the AC

supply voltage and verify that the high voltages

does not exceed 37.1kV, when horizontal just

begins to pull ou t of sync . If the hig h voltage is not

within the specified limit, the cause must be

determined and corrected before the Receiver is

returned to the customer.

This chassis employs a special circuit to protect against excessive high voltage and beam current. If, for any reason, the high voltage and beam current e xc ee d a predetermined level this protective circuit activates and detunes the horizontal oscillator that limits the high voltage. The over-voltage protection circuit is not adjustable. However, if components indicated by the

symbol sweep system or the over-voltage protection circuit itself are changed, the operation of the circuit should be checked using the following procedure:

on the schematic in either the horizontal

- 5 -

Receiver Feature Table

FEATURE\MODEL

Chassis NA8 Tuning system 96K # of channels 181 Menu language Eng/Span/Fr Closed Caption X V-Chip X 75 Ω input X Remote Model # HL00761 Picture tube M68LGLO61X V/A norm (X=both) X MTS/SAP/DBX X Volume Correction X Built-in audio power 5Wx2 (10%) # of speakers 2 A/V in (rear/front) 3(2/1) Dimensions mm

(HxWxD) in

27GX01B-501 27GX01B-511

594.8x665.2x544.5

23.4x26.1x21.4

Weight (kg/lbs) 38/83.6 Power source (V/Hz) 120/60 Anode voltage

Video input jack Audio input jack 500mV RMS 47kΩ A-Board TNP2AH017 AD C-Board TNP2AA047 AP

28.30kV ±1.25kV

75Ω, phon o jack

p-p

Table 1. Receiver Features

Specifications are subject to change without notice or obligation. Dimensions and weights are approximate.

- 6 -

Location of Controls (Receiver)

1 2 3 4 5 6

Figure 1. Location of Controls Receiver

Quick Reference Control Operation

Quick Reference

Control Operation

Power Button - Press to turn ON or OFF. Volume Buttons - Press to adjust Sound Level, or to adjust Audio Menus, Video

Menus, and select operating features when menus are displayed

Channel Buttons - Press to selec t programmed c hannels. Pres s to highlight de sired

features when menus are displayed.

Menu Button - Press to display Main Menu and access On Screen feature and

Adjustment Menus.

Input Button - Press to select TV or one of two Video Inputs.

Front A V In Jacks - Front audio, video and earphone jacks.

- 7 -

Location of Controls (Remote )

REMOTE CONTROL

Power Button

Press to turn On or Off.

Mute Button

Press to mute sound. A second press resumes sound. Pr ess also to toggle Closed Captioning.

Input Button

Press to select TV or video input.

Menu Button

Press to display main menu and access or exit onscreen features or Adjustment menus.

Recall Button

Press to display Time status of sleep timer, channel, video mode, channel I.D. and audio mode.

Precoded VCR Buttons

These buttons transmit the chosen precoded VCR codes.

POWER TV CABLE VCR

789

MUTE

RECALL

REC

TV/VCR

LST-CH

SLEEPINPUT

STOP

tt t uu

CURSOR CONTROL

PAUSE

VOL

REMOTE CONTROL

Mode Buttons

These buttons allow the remote to control your TV, VCR, or cable box depending on which mod e button is selected.

Channel Buttons

Press to select channels.

Keypad Buttons

Press desired channel number to access channel .

Volume Buttons

Press to adjust TV sound level.

LST-CH (Last Channel) Button

Press to switch to the previously tuned channel.

Sleep Button

Press to turn TV Off in 30, 60, or 90 minutes.

HITACHI

CLU-351U

Figure 2. Location of Controls (Remote)

Cursor Button

Press to adjust Aud io menus, Video menus, and select operating features when menus are displayed.

- 8 -

Remote Control Quick Reference Functional Key Chart

321

Key Operates

POWER

INPUT

TV CABLE VCR

TV Selects the TV Input Mode

TV Activates and Exits TV Menus

VCR CABLE

Turns TV On and Off Turns Cable Box On and Off Turns VCR On and Off

Selects Channel Selects code in Video Lock Menu Selects Channel in Channel I.D. Menu Selects Channel in Timer Menu

Selects Precoded VCR codes when programming remote

Selects Precoded CABLE codes when programming remote

RECALL

TV Display Channel, Time, Channel I.D. and Audio Mode

TV Menu Navigation

TV CABLE

Channel Up/Down Channel Up/Down

VOL p

VOL q

TV Volume Up/Down

- 9 -

Key Operates

SLEEP

MUTE

LST-CH

Mode Selection Buttons

CABLE

VCR

TV Select previously tuned channel

TV CABLE VCR

Selects 30, 60 or 90 minutes for Automatic Turn Off. Also use to turn Sleep Timer off by selecting NO

Mutes TV Audio Access and exit Closed Caption ing

Selects TV Mode for the remote control Selects Cable Mode for the remote control Selects VCR Mode for the remote control

Standard VCR Control Buttons

REC

STOP

PAUSE

TV/VCR

VCR

VCR CABLE

Record

Rewind

Fast Forward

Play

Stop

Pause

Selects TV or VCR Mode Selects A/B Mode

- 10 -

Using the Remote to Control VCR and Cable box Funtions

Operating the Precoded Function for Your VCR

This remote is designed to operate different types of VCRs. You must first program the remote to match the remote system in your VCR. (Refer to the VCR Code Index section.)

1. Turn on your VCR.

2. Aim the remote control at the front of your VCR.

3. Press the VCR button to s witch to VCR precoded mode.

4. While holding down the VCR button, enter the 2-digit preset code that matches your VCR*. The remote will turn on your VCR when the correct 2-digit preset code is entered. When this occurs, the remote contr ol is programme d for your VCR. If your VCR does not turn off after 5 s econds, try a different 2-digit preset code.

5. The remote will now control your VCR.

NOTES:

• If your VCR cannot be operated after performing the above procedures, this means that your VCR codes have not been precoded into the remote.

• In the unlikely event that your VCR cannot be operated after performing the above pro cedures, consult your VCR operating guide.

• The remote control will remember the codes you have programmed in until the batteries ar e removed. After replacing the batteries repeat the entire programming proc edure stated above.

• If your VCR does not have a power function, the remote will issue the CHANNEL UP function.

POWER TV CABLE VCR

789

MUTE

RECALL

REC

TV/VCR

LST-CH

SLEEPINPUT

STOP

tt t uu

CURSOR CONTROL

PAUSE

VOL

HITACHI

CLU-351U

* (Codes are listed on page 12)

Operating the Precoded Function for Your Cable Box

1. Turn on your cable box.

2. Aim the remote control at th e fron t of your cable box.

3. Press the cable box button to switch to cable box precoded mode.

4. While holding down the CABLE button, enter the 2-digit preset code that matches your cable box*. The remote will turn on your cable box when the cor rect 2-digit preset code is entered. When this occurs, the remote control is programmed for your cable box. If your cable box does not turn off after 5 seconds, try a different 2digit preset code.

5. The remote will now control your cable box.

NOTES:

• If your cable box cannot be operated after performing the above procedures, this means that your cable box codes have not been precoded into the remote.

• In the unlikely event that your cable box cannot be operated after performing the above procedures, consult your cable box operating guide.

• The remote control will remember the codes you have programmed in until the batteries are removed. After replacing the batteries repeat the entire programm ing pr ocedure stated above.

• If your cable box does not have a power function, the remote will issue the CHANNEL UP function.

• For some models, the remote control’s channel and will control the cable box channel. The number buttons will control your television channel although you are in cable mode.

- 11 -

VCR and Cable Box Codes Index

The remote is capable of operating many brands of V CRs and cable boxes. You must first program the remote control to match the remote system in your VCR or cable box.

NOTE:

The remote control memory is limited. Some models of VCRs or cable bo xes may no t operate. The remote con trol is not designed to control all features that are available in all models.

Code Index For VCRs

VCR Brand Code (s)

Emerson

Funai GE Hitachi JVC Magnavox Mitsubishi Panasonic RCA Sony Toshiba Zenith

00,01,10,16,23,33, 37,40, 43

00 09,22 00,14,15 14,26 09,12,28 16,23,26,45 09,35,46 15,22 06,07,08,09 16,17,42 07,08,12

Code Index for Cable Boxes

Cable Box

Brand

G.I. Jerrold Magnavox Philips Pioneer Samsung Scientific Atlantic Zenith

Code(s)

09 03, 09, 10, 12, 13,

51 40 40 39 39 04, 06, 14, 52, 56 00

- 12 -

Disassembly for Service

Disassembly for CRT

Back Cover

Remove all the screws marked with an arrow( ) from the back of the Receiver.

Note: Screw configuration, type, and number of

screws vary depending on the model of the Receiver serviced a nd the appli cation; v arious models are covered in this Manual. Use same hardware when reassembling the receiver.

• 3 screws at the top edge of the Receiver.

• 1 screw at each lower corner of the Receiver.

• 1 screw by the retainer plate of the AC power cord.

• 1 screw by the Flyback assembly.

• 1 screw by the A/V jacks.

A-Board - Main Chassis

1. Slide the chassis completely out of the guide rails.

2. Stand the Receiver on its edge. The underside of the board is completely acc essible for component replacement.

Note: Some tie- wraps th at s ec ure t he wi r e dres s ing s

may need to be unfastened for chassis removal.

C-Board - CRT Output

Plugs into the socket on the CRT neck.

Speakers

Each speaker is sec ured to the cabinet’s front with 4 screws.

Keyboard Push Button Assembly

Fastened to the inside of the cabinet front wit h up to 3 screws.

Replacement

1. Discharge the CRT as instructed in the Safety Precautions (see page 2).

2. Disconnect the yoke (DY) plug, degaussing coil (DEG) plug and th e CRT 2nd anod e button from the main board.

3. Remove the C-Board from the CRT base and unplug the black wire (CRT dag ground) C10.

4. Disconnect the A11, A12, and Speakers plugs from the A-Board.

5. Lift the Main Chassis (A-Board) and all mounted boards completely out with the CRT Board attached.

CRT Replacement

1. Perform Disassembly for CRT Replacement procedure.

2. Insure that the CRT H.V. Anode button is discharged before handling the CRT. Read the Safety Precautions (see page 2) on handling the picture tube.

3. Remove the compon ents from the CRT neck and place the cabinet face down on a soft pad.

4. Note the original order for the CRT mounting hardware as they are removed from the CRT mounting brackets at each corner of the CRT.

5. Remove the CRT with the degaussi ng coil and the dag ground braid attached.

6. Note the original locations and mounting of the degaussing coil a nd the dag ground assembly to insure proper reinstallation on the replacement CRT.

To remove and re-mount the degaussing coil:

The degaussing coil is hel d in place by clampers fastened to the CRT corner ea rs. These clampers must be installed on to the replacement CRT prior to mounting the degaussing coil.

To remove and re-mount the dag ground braid:

a.Unhook the coil spri ng from the bottom corne rs

of the CRT ears.

b.Release the braid loop from the upper corners of

the CRT ears.

7. Mount the dag ground braid on the replacement CRT. Position the degaussing coil with new ties. Dress coil as was on the original CRT.

8. Replace the components on CRT neck and re-install into cabinet. Verify that all ground wires and circuit board plugs get connected.

- 13 -

Chassis Service Adjustment Procedures

All service adjustments are factory preset and should not require adjustment unless controls and/or associated components are replaced.

Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use IC803’ s heat sink when the HOT ground

symbol ( ) is used. Otherwise, use COLD ground ( ) — Tuner shield, IC451’s heat sink or FA2.

A-BOARD

COLD ( )

HOT ( )

RL801

F801

IC 803

C552

C809

TPD9

TPD8

IC 002

A32

IC 6501

IC 001

164

32 33

A31

T U N E R

FA1

DAT A

TP15

A11

IC 101

152

26 27

CLK

FA2

IC 551

IC 552

IC 2302

Figure 3. A-Board Main Components and Test Points

IC 4402

A61

IC 2321

MOMENTARILY CONNECT A JUMPER FOR ENTERING SERVICE MODE (FA1 to FA2 )

IC 451

Q501

FOCUS SCREEN

Q551

D554

131.0V B+ Voltage Confirma tion

1. Set the Bright and the Picture to Minimum by using the Picture Menu.

2. Connect the DVM between C809(+ sid e) and cold ground ( ).

3. Confirm that B+ voltage is 131.0V ± 2.5V. This voltage supplies B+ to the Horizontal Output & Flyback circuits.

Source Voltage Chart

120V AC line input. Se t the Bright and the Picture to Minimum by using th e Picture Menu. Use cold ground

(

) for the (-) lead of the DVM.

C572 (+) +5.0V ± 0.25V

TPD9 +13.0V ± 2V C552(+) +8.0V ± 1V TPD8 +27.4V ± 2V IC551 pin3 +9.0V ± 0.5V CATHODE OF D554 +220.0V ± 15V

Adjust Picture Menu for normalized video adjustments.

B+ 5V Source Voltages Volatile 5V:

C572, + side = IC552 pin 3, Tuner BP, IC101 (IF 5V).

MPU 5V:

Emitter Q002 = IC001 (VDD, AVDD).

Stand-by 5V:

IC001 (key in 1), I2C EEPROM (IC002), Remote Receiver.

B+ 9V Source Voltage

IC551 pin 3 = IC101 (IF 9V), Tuner (BM).

B+ 12V (Stand- by)

Note: +16V when power is on

Cathode D001 = RL801 (on-off relay), Q002 (+5V Reg).

High Voltage Check

1. Select an active TV channel and confirm that horizontal is in sync.

2. Adjust Brightness and Picture using Picture Icon menu so video just disappears.

3. Confirm B+ 131V is within limit.

4. Using a high voltage meter confirm that the High Voltage is

28.30kV ±1.25kV.

- 14 -

Purity and Convergence Procedure

Adjustment is necessary only if the CRT or the deflection yoke is replaced or if the setting was disturbed. The complete procedure consists of:

1. Vertical Raster Shift Adjustment. (Only for Models

with Purity/Convergence Assembly with 4 Pairs of Rings).

2. Initial static convergence.

3. Setting the purity.

4. Final static convergence.

When the CRT or the Yoke is Replaced

Place the yoke on the CRT neck (do not tighten the clamp).

For a 2-piece assembly (see Fig. 4):

Position purity/convergence assembly as shown and tighten clamp snugly. Remove the hot-melt glue seal on assembly and position like tabs of purity device

together at 12 o’clock to reduce its magnetic field effect.

R&B Convergence Rings

R&B&G Convergence Rings

G3 G4

Purity Rings Centered

Over G3/G4 Gap

For a 1-piece assembly (see Fig. 7):

Position like tabs of purity devices together at 12

o’clock to reduce an y magnetic field effect. (For better results, note part numb er and look fo r specif ications at Service Center)

Figure 7. Positioning of Purity/Convergence

Assembly (1-piece assembly)

For either assemblies:

Turn the Receiver ON. Operate the Receiver for 60 minutes using the first Purity Check field (white screen) to stabilize the CRT.

Fully degauss the Receiver by using an external degaussing coil.

Slide the defle ction yoke back and forth on t he ne ck o f the CRT until it produces a near white, uniform raster.

Figure 4. Positioning of Purity/Convergence Assembly

(2-piece assembly)

For models using 4 pairs of rings, place the vertical

raster shift tabs at 3 o’clock (90

from the purity and

convergence tabs, see Fig. 5 and Fig. 6)

R&B Convergence Rings

R&B&G Convergence Rings

Vertical Raster Shift Ring

G3 G4

Purity Rings Centered Over G3/G4 Gap

Figure 5. Positioning of Purity/Convergence Assembly

(4 Pairs of Rings)

R&B&G Convergence Rings

R&B Convergence Rings

Vertical Raster

Shift Rings

Purity Rings

Figure 6. Positioning of Purity/Convergence Assembly

(4 Pairs of Rings)

Vertical Raster Shift Adjustment (Only for

Models with Purity/Convergence Assembly with 4 Pairs of Rings).

Apply a green pattern with a horizontal line, adjust the Deflection Yoke so that has no tilt, then secure it. Adjust center line of the pattern with the mechanical center of the CRT, this center is determined by two marks at the side edges of the screen. To adjust the line, once the vertical raster shift tabs are place at 3 o’clock to reduce its magnetic field effect (see Fig. 5 and Fig. 6) open the tabs the same angle from the center, until the center line of the pattern becomes a straight line, center ed with the marks of the CRT. (see Fig. 8)

Center line

from pattern

Mechanical

Center Marks

Vertical Raster Shift tabs

Figure 8. Vertical Raster Shift Adjustment

(4 pairs of rings assembly)

Open the same angle

from center

- 15 -

Initial Center Static Convergence

NOTES:

1. CRT warm up with white screen (three guns activated) is needed to stabilize the shadow mask expansion.

2. Initial center static convergence (roughly centers three gun beams) is required in order to perform purity adjustment.

Figure 9. Green Raster Adjustment

Green Raster

Connect a dot/cross hatch generator to the Receiver and tune in a signal. Observe misconvergence at center of the screen only. Adjust the R&B pole magne ts; by separating tabs and rotating to converge blue with red. Adjust the R&B and R&B&G pole magnets: by separating tabs and rotating to converge blue an d red (magenta) with green.

Note: Precise convergence at this point is

not important.

Purity Adjustment

When the Receiver is in the Serviceman Mode for making electronic adjustments, press the Recall button on the Remote Control to ente r Purity Check. (Se e the

Service Adjustments Electronic Controls

procedure). Operate the Receiver for 60 minutes using the first Purity Check field (white screen) to stabilize the CRT. Fully degauss the Receiver by using an external degaussing coil. Press the Recall button on the Remote Control again until the Purity Check (green screen) appears.

For a 2-piece assembly (see Fig. 4): Loosen the deflection yok e clamp screw an d move the deflection yoke back as close to the purity magnet

as possible. Adjust the Purit y rings to set the vertical green raster precisely at the center of the screen (see Fig. 9).

Final Convergence Procedure (see Fig. 10

through Fig. 12):

Note: Vertical size and focus adjustments must be completed prior to performing the convergence adjustment. Connect a dot pattern generator to the Receiver. The Brightness level should not be higher than necessary to obtain a clear pattern.

Converge the red and the blue dots at the center of the screen by rotating the R&B pole Static Convergence Magnets. Align The converged red/blue dots with the green dots at the center of the screen by rotating the R&B&G pol e Static Convergence Magnets. Melt wax with soldering iron to reseal the magnets. Slightly tilt vertica lly and ho rizontally (do not ro tate) the deflection yoke to obtain a good overall convergence. If convergence is not reached at the edges, insert permalloy (see fo llowing section) from the DY corners to achieve proper convergence. Recheck for purity and readjust if necessary. After vertical adjustment of the yoke, insert wedge at 11

o’clock position, then make the horizontal tilt adjustment. Secure the deflection yoke by inserting two side wedges at 3 and 7 o’clock positions. Apply adhesive between tab (thin portion) of wedge and CRT and place tape over the tab to secure to the CRT.

Permalloy Convergence Corrector Strip (Part No. 0FMK014ZZ)

Slowly move the deflecti on yoke forward until the best overall green screen is displayed.

For a 1-piece assembly (see Fig. 7): Slowly move the deflection yoke and purity rings

assembly toward the CRT board and adju st the purity magnet rings to set vertical green raster at center of screen (see Fig. 9). Gradually move the deflection yoke & purity rings forward and adjust for best overall green screen.

Continue from here for either assemblies:

Tighten the deflection yoke clamp screw. Press the Recall button on the Remote Control again until the purity check (blue screen) and (red screen) appear and observe that good purity is obtained on each respective field. Press the Recall button on the Remote Control again until Purity check (white screen) app ears. Obse rve the screen for uniform white. If purity has not been achieved, repeat the above procedure.

This strip is used in some sets to match the yoke and CRT for optimum convergence. If the y oke or CRT is replaced, the strip may not be required. First converge the set without the strip and observe the corners.

If correction is needed:

1. Place strip between CRT and yoke, in quadrant needing correction. Slowly move it around for desired results.

2. Press adhesive tightly to the CRT and secure with tape.

- 16 -

As the yoke is tilted

RGB

Figure 10. Vertical Yoke Movement

vertically, the rasters produced by the outside guns rotate in opposite directions.

RGB

As the yoke is tilted horizontally, one raster gets larger while the other gets smaller

Figure 11. Horizontal Yoke Movement

Raster produced from one of the outside electron beams

Raster from the other side electron beam

Static convergence magnets are set for center convergence

Static Convergence Magnets Converges

R/B with G

Purity/Convergence

Assembly Clamp

Purity Rings Adj. on

Green Raster

11 o’clock Position

Converges

R with B

Double sided adhesive tape

3 o’clock Position

Y oke Positioning Wedges for Dynamic Convergence

7 o’clock Position

Figure 12. Convergence Magnets and Wedges Location

Note: For models using 4 pairs of rings

assemblies see Fig. 5 for details

- 17 -

Serviceman Mode (Electronic Controls)

This Receiver has electronic technology using the I²C Bus Concept. It performs as a control function and it replaces many mechanical controls. Instead of adjusting mechanical controls individually, many of the control functions are now performed by using “On Screen Display Menu”. (The Serviceman Adjustment Mode.)

Note: It is suggested that the techni cian reads all the way through and understand the following procedure for

Entering/Exiting the Serviceman Adjustment Mode; then proceed with the in structions workin g with the Receiver. When becoming fa mi li ar w ith th e pr oc edu re, the Flow Chart for S ervi ceman Mode may be u sed as a quick guide.

Quick Entry t o Servicema n Mode:

At times when minor adjustments need to be done to the electronic controls, the method of Entering the serviceman Mode without removal of the cabinet back is as follows using the Remote Control:

1. Select SET-UP icon and select CABLE mode.

2. Select CLOCK icon and set SLEEP time for 30 Min.

3. Press MENU button twice to exit menus.

4. Tune to the Channel 124.

5. Adjust VOLUME to minimum (0).

6. Press the VOL button (decrease) on Receiver. Red “CHK” appears in upper corner.

To toggle between Aging and Serviceman modes:

While the “CHK” is displayed on the left top corner of the CRT, pressing the Ac tion and the Volume Up buttons on the Receiver simultaneously will toggle between the modes. Red “CHK” for Serviceman and yellow “CHK” for Aging.

7. Press the Power Button on the Remote Control to select one of seven Serviceman Adjustment Modes.

1) B= Serviceman VCJ SUB-DATA ADJUSTEMENT.

2) C= Serviceman VCJ CUT-OFF ADJUSTMENT.

3) D= Serviceman PIN CUSHION ADJUSTMENT.

4) M= Serviceman MTS ADJUSTMENTS.

5) P= Serviceman PIP ADJUSTMENT.

6) S= Serviceman OPTIONS ADJUSTMENTS.

7) X = Serviceman COMB FILTER ADJUSTMENT.

8) “CHK” = Normal operation of CHANNEL and VOLUME .

(Models with PIP only)

Note: Only the applicable settings for

32 B 0 2 215 C 0

the Receiver serviced will be available (See

in Fig. 13).

An address Menu appears in the right hand corner of the screen

Figure 13. Serviceman Mode Menu Adjustments.

Exiting the Serviceman Mode:

Press the Menu and the Power buttons on the Receiver simultaneously for at least 2 seconds. THE RECEIVER EXITS SERVICEMAN MODE.

The Receiver momentarily shuts off; then comes back on tuned to channel 3 with a preset level of sound. Any programmed channels, channels caption data and some others user defined settings will be erased.

IMPORTANT NOTE: Always Exit the Serviceman Mode Following Adjustments.

- 18 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment .

For Adjustments:

1.Press Channel Up/Down on the Remote Control to select one of

the available Ser vice Adjustments (a in Fig. 13).

Note: Write Down the original

value set (b in

Fig. 13

) for each address before modifying anything. It is easy to erroneously adjust the wrong item.

2.Press Volume Up/Down on the Remote Control to adjust the level of the selected Service Adjustment (b in Fig. 13).

Sub-Data Adjustment

B0 SUB-COLOR 31 B1 SUB-TINT 31 B2 SUB-BRIGHTNESS 31 B3 SUB-CONTRAST 16 B4 SUB-TINT VIDEO 16 B5 SUB-COLOR VIDEO 16 B6 SUB-TINT COMP 63 B7 SUB-COLOR COMP 31 B8 SUB SHARP TV/VIDEO 10 B9 SUB SHARP S-VHS/COMP 31

BA SUB-CONTRAST FIXED 15

Cut-Off Adjustment

Default

Level

Default

Level

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

C0 CUT-OFF R 128 C1 CUT-OFF G 128 C2 CUT-OFF B 128 C3 USER BRIGHTNESS 31 C4 G DRIVE 64 C5 B DRIVE 64 C6 DRIVE C TEMP 8 C7 CONTRAST C TEMP 5

To D Items.

Note: Some adjustment s mode s ma y not be

available in some models depending on available options.

- 19 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For Adjustments:

1.Press Channel Up/Down on the Remote Control to select one of

the available Ser vice Adjustments (a in Fig. 13).

Note: Write Down the original

value set (b in

Fig. 13

) for each address before modifying anything. It is easy to erroneously adjust the wrong item.

2.Press Volume Up/Down on the Remote Control to adjust the level of the selected Service Adjustment (b in Fig. 13).

Pin Cushion Adjustment

D0 H POSITION 16 D1 V SIZE 31 D2 V S CORRECTION 4 D3 V LIN CORRECTION 14 D4 E/W TRAPEZIUM 8 D5 V AGC 1 D6 V POSITION 1 D7 V CENTERING 63 D8 V CENTERING DAC SW 0 D9 V-BLK START PHASE 12 DA V-BLK STOP PHASE 14

MTS Adjustment

Default

Level

Default

Level

M0 INPUT LEVEL 33

Note: Some a dju stments modes m ay no t be

available in some models depending on available options.

M1 LOW-LEVEL SEPARATION 6 M2 HIGH-LEVEL SEPARATION 25

Always Exit the Serviceman Mode Following Adjustments.

To P Items.

IMPORTANT NOTE:

- 20 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

e e e

For Adjustments:

1.Press Channel Up/Down on the Remote Control to select one of

the available Ser vice Adjustments (a in Fig. 13).

Note: Write Down the original

value set (b in

Fig. 13

) for each address before modifying anything. It is easy to erroneously adjust the wrong item.

PIP Adjustment

P0 PIP COLOR 92 P1 PIP TINT 54 P2 PIP BRIGHTNESS 22 P3 PIP CONTRAST 80 P4 UP 1/9 26 P5 DOWN 1/9 143 P6 LEFT 1/9 10 P7 RIGHT 1/9 101 P8 UP 1/16 26

Default

Level

2.Press Volume Up/Down on th Remote Control to adjust th

level of the selected Servic Adjustment (b in Fig. 13).

P9 DOWN 1/16 160 PA LEFT 1/16 10 PB RIGHT 1/16 116 PC PIP FREERUN N/A PD PIP YDL 4

To S Items.

Note: Some adjustments modes may not be

available in some models depending on available options.

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

- 21 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

e e e

For Adjustments:

1.Press Channel Up/Down on the Remote Control to select one of

the available Ser vice Adjustments (a in Fig. 13).

Note: Write Down the original

value set (b in

Fig. 13

) for each address before modifying anything. It is easy to erroneously adjust the wrong item.

2.Press Volume Up/Down on th Remote Control to adjust th level of the selected Servic Adjustment (b in Fig. 13).

OPTIONS Adjustment

S0 ABL GAIN 3 S1 ABL POINT 3 S2 RGB BRIGHTNESS 8 S3 RGB GAMMA 1 S4 COLOR GAMMA 1 S5 VSM-G 0 S6 BS POINT 7 S7 CLOCK ADJUST 128 S8 LOUD COMP 31 S9 CAPTION DIG FILTER SW 0 SA CAPTION SCROLL 1 SB RGB MATRIX 6 SC RGB MATRIX COMP 5

Default

Level

To X Items.

Note: Some a dju stm e n t s m odes may not be

available in some models depending on available options.

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

- 22 -

Press the Power Button on the Remote Control to select the Serviceman Adjustment

For Adjustments:

1.Press Channel Up/Down on the Remote Control to select one of

the available Ser vice Adjustments (a in Fig. 13).

Note: Write Down the original

value set (b in

Fig. 13

) for each address before modifying anything. It is easy to erroneously adjust the wrong item.

2.Press Volume Up/Down on the Remote Control to adjust the level of the selected Service Adjustment (b in Fig. 13).

Comb Filter Adjustment

X0 CLIP LEVEL 152 X1 CSOK 12 X2 COMB LIMIT 24 X3 COMB CORE 41 X4 COMB RF DELAY 20 X5 COMB VIDEO DELAY 18 X6 COMB VMLM 90 X7 COMB VMCO 24 X8 COMB SHARP 123

X9 COMB VM LEVEL 255 XA COMB VMPKF 1 XB H LOCK MODE 1 XC H LOCK 70 XD H SEP 1 313

Default

Level

XE H SEP 2 266 XF SUB H LOCK MODE 0

X10 SUB H LOCK 70 X11 SUB H SEP1 313 X12 SUB H SEP2 266

Note: Some adjustment s mode s may no t be

available in some models depending on available options.

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

To B Items.

- 23 -

To Check Purity:

Press the Recall Button on the Remote Control whe n in Serv iceman Mod e (red “CHK” is display ed) to en ter the Purity Field Check Mode.

NORMAL SCREEN

Press Recall again to select desired field.

BLUE

SCREEN

GRN.

SCREEN

RED

SCREEN

WHITE

SCREEN

Figure 14. Purity Check Field Mode.

Helpful Hints

Entering Serviceman Mode (Back-Open Method)

1. While the Receiv er is ON and operatin g in Normal Mode, mome ntarily short test point FA1 (TP8) to Cold Ground ( ) FA2 (TP3) A-Board.

The Receiver enters the Aging Mode

Yellow letters “CHK” appear in the upper left corner of the CRT. (The Volume Up/Down will adjust rapidly).

2. Simultaneously press the Menu and the Volume Up buttons on the

Receiver Control Panel .

The Receiver enters the Serviceman Mode.

The letter in “CHK” turn red. (The Volume Up/Down will adjust normally). (All customer controls are set to nominal level).

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

- 24 -

WHITE

SCREEN

Instructional Flow Chart for Serviceman Mode

NORMAL MODE

Momentarily short FA1 to FA2 ( ).

AGING MODE

• Yellow “CHK” appears in upper left corner of screen.

• Volume Up/Down operate rapidly.

• Custumer Controls are set to nominal level.

GRN.

SCREEN

RED

SCREEN

RECALL

(ON REMOTE)

BLUE

SCREEN

WHITE

SCREEN

QUICK ENTRY TO SERVICEMAN MODE

• Select CABLE Mode.

•Set SLEEP time for 30 Min.

• Tune to Channel 124.

• Adjust Volume to minimum.

• Press VOL DOWN. On Receiver.

EXIT

Adj.

needed?

Press Menu + Volume Up Simultaneously (ON Receiver)

SERVICEMAN MODE

• “CHK” turns red.

• Volume Up/Down operate normally.

• Costumer Controls are set to nominal level.

RECALL

(ON REMOTE)

Adj.

needed?

POWER

(ON REMOTE)

EXIT

Press Menu and Power on the Receiver simultaneously for at least 2 seconds.

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

Note: Some adjustment s modes may not be

available in some models depending on available options.

Figure 15. Flow Chart for Serviceman Mode.

SUB-DATA ADJUSTMENTS.

B ITEMS.

POWER

(ON REMOTE)

- 25 -

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

Instructional Flow Chart for Serviceman Mode - Continued

CUT-OFF ADJUSTMENTS.

C ITEMS.

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

PINCUSHION ADJUSTMENTS.

Adj.

needed?

POWER

(ON REMOTE)

D ITEMS.

Adj.

needed?

IMPORTANT NOTE:

Always Exit the Serviceman Mode Following Adjustments.

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

Note: Some adjustments m odes ma y no t be

available in some models depending on available options.

Figure 16. Flow Chart for Serviceman Mode (cont).

POWER

(ON REMOTE)

MTS ADJUSTMENTS.

M ITEMS.

Adj.

needed?

POWER

(ON REMOTE)

- 26 -

Instructional Flow Chart for Serviceman Mode - Continued

PIP ADJUSTMENTS.

P ITEMS.

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

OPTIONS ADJUSTMENTS.

Adj.

needed?

POWER

(ON REMOTE)

S ITEMS.

Adj.

needed?

ON REMOTE CONTROL TO

SELECT ADJUSTMENT

ON REMOTE TO ADJUST

VOL

THE LEVEL

Figure 17. Flow Chart for Serviceman Mode (cont).

Note: Some adjustments mo des may not be

available in some models depending on available options.

POWER

(ON REMOTE)

COMB-FILTER ADJUSTMENTS.

X ITEMS.

Adj.

needed?

EXIT

Press Menu and Power on the Receiver simultaneously for at least 2 seconds.

IMPORTANT NOTE: Always Exit the Serviceman Mode Following Adjustments.

POWER

(ON REMOTE)

- 27 -

Service Adjustments (Electronic Controls)

Figure 18. TP47G waveform

White

Yellow

Cyan

Green

Magenta

Red

Blue

Black

SYNC TIP

1.5V - 1.9V

p-p

2.0V

p-p

±0.1V

Sub-Brightness

Serviceman DAC Adjustment (B2)

Adjustment of this control is important for setting proper operation of customer brightness and contrast controls. This adjustment must be made after Sub-Contrast or Color Temperature adjustments are made. Do not

adjust SCREEN after the Sub-Brightness is set. Preparation:

Apply a color bar signal with 100 IRE white and 7.5

IRE black. (Switch Color to “OFF” on the signal generator.) Operate the Receiver fo r a mini mum of 10 minutes prior to performing this adjustment.

Procedure:

In the Serviceman Mode for making electronic adjustments, select the D AC adjustment (B2) and adjust until the black starts to look gray. Then decrease the level to the point where gray turns to black.

Note: You may set the accurate value following the

Preparation steps and the Pro cedure step No. 2 of the Sub-Contrast adjustment described below.

Sub-Contrast

Serviceman DAC Adjustment (B3)

This adjustment is factory set. Do not adjust unless repairs are made to a ssociated circ uit, the CRT Board or when the CRT is replaced.

Preparation:

1. Apply a color bar signal pattern with 87.5% modulation, 70% saturated color bar with a 100 IRE white and 7.5 black.

Note:

2. Preset the following controls:

3. Connect the oscillos cope to TP47R. Se t the scope

4. Connect a jumper from TPD2 to ground ( ).

The pattern used in this procedure is an EIA color bar pattern with 87.5% modulation with 100 IRE white and 7.5 black. Correlate the information in this procedure to the pattern used if another signal is used.

• Brightness . . . . . . . .Center.

• Color . . . . . . . . . . . .Min.

• Contrast. . . . . . . . . .Max.

• Sharpness . . . . . . . .Center.

time base to 20µs (horiz onta l).

Procedure:

1. In the Serviceman Mode, select DAC SubBrightness Adjustment (B2) and adjust for 1.5-

1.9Vp-p between blan king and 7.5 IRE leve l. (See video waveforms detail, Fig. 18)

2. In the Serviceman Mode for electronic adjustments, select DAC Sub-Contrast Adjustment (B3) and adjust for 2.0Vp-p ±0.1V white level to

black level on video waveform (see video waveforms det ail, Fig. 18).

3. Remove the jumper (Preparation step 4).

Tint/Color Adjustment

Serviceman DAC Adjustment (B1) (B0) Preparation:

1. Apply a rainbow color bar signal.

2. Preset the following controls:

• Brightness . . . . . . . .Min.

• Color . . . . . . . . . . . .Center.

• Tint. . . . . . . . . . . . . .Center.

• Contrast. . . . . . . . . .Max.

• Sharpness . . . . . . . .Min.

3. Connect the oscilloscope to TP47B (A-Board).

4. Connect a jumper from TPD2 to GND ( ).

5. Connect a jumper from IC101 pin 28 to GND ( ).

Procedure:

1. In the Serviceman Mode for making electronic adjustments, select DAC Sub-Tint Adjustment (B1). Adjust until the waveform measu red is as the one shown in Fig. 19.

TP47B (A-Board)

A to B = 1 unit B to C = 2 units

1 2 3 10

4 5 6 7 8 9

Figure 19. TP47B waveform

2. Connect the oscilloscope to TP47G (A-Board).

3. Select DAC Sub-Colo r Adjustme nt (B0) an d adjust for peak to peak am plitude to be 0.65Vp-p ±0.05V for 27” models as shown in Fig. 20.

TP47G (A-Board)

1 2 3 4 5 6

7 8 9 10

0.65Vp-p±0.05V

Figure 20. TP47G waveform

4. Remove the jumpers (Preparation steps 4 & 5).

- 28 -

Color Temperature Adjustment (B/W Tracking)

Serviceman DAC Adjust. (C0) (C1) (C2) (C4) (C5) Minor Touch-Up Method

OBSERVE low and high brightness areas of a B/W picture for proper t racking. Adjust only as requ ired for

“good gray scale and warm highlights”.

1. LOW LIGHT areas – In Serviceman Mode for making electronic adjustments, select Cutoff (C0) RED, (C1) GRN, (C2) BLU and adjust th e picture for gray.

2. HIGH LIGHT areas – In Serviceman Mode for making electronic adjustments, select Drive (C4) GRN, (C5) BLU and adjust the picture for warm whites.

8. View scope trace at Horizontal r ate and adjust the Serviceman Mode DAC (C0) level until a scannin g period of 195V above DC gro und is measured, as indicated in Fig. 22.

9. Connect the scope to the GRN Cathode (KG).

10. In Serviceman Mode for making electronic adjustments, select the GRN CUTOFF DAC (C1).

11. Press the LST-CH key on the Remote

195V DC

0V DC

Figure 22. Cathode Waveform, Adjustment

Waveform Detail

(Ground)

Complete Adjustment

Preparation:

1. Turn the Receiver “ON” and allow 10 minutes warm up at h igh brightness.

2. Apply a color bar signal with color “OFF”.

3. Turn the SCREEN control (part of FBT T551) fully counterclockwis e.

Procedure:

Preset the following Serviceman DACs for best results:

• C0 . . . . . . . . . . . . . . 128

• C1 . . . . . . . . . . . . . 128

• C2 . . . . . . . . . . . . . . 128

• C4 . . . . . . . . . . . . . . 64

• C5 . . . . . . . . . . . . . . 64

1. Connect the oscilloscope to C1-2 (CRT-Board).

2. In Serviceman Mode for making electronic adjustment, select the Sub-Bright DAC (B2).

3. Press the LST-CH key on the remote.

4. Observe the oscilloscope waveform at Horizontal rate and adjust the Serviceman Mode Sub-Bright DAC (B2) level until a scanning period of 2.5V above DC ground is measured, as indicated in Fig. 21.

2.5V DC

0V DC

Figure 21. TP35 Waveform

12. View the scope trace and adjust the Serviceman Mode DAC (C1) for the scanning period to be 195V above DC ground. (See Fig. 22)

13. Connect the scope to the BLU Cathode (KB).

14. In Serviceman Mode for making electronic adjustments, select the BLU CUTOFF (C2).

15. Press the LST-CH key on the Remote.

16. View the scope trace and adjust the Serviceman Mode DAC (C2) for the scanning period to be 195V above DC ground. (See Fig. 22)

17. Turn the Screen Control (part of FBT) slowly clockwise until a color horizontal line appears.

18. Wi th the other two colors Ser viceman Mode DAC CUTOFF adjustments (C0) RED, (C2) BLU; increase the colors to create a white horizontal line.

19. Confirm that a good gray scale is established by viewing B/W color bar pattern.

20. In the Serviceman Mode for making electronic adjustments select the DAC DRIVE adjustments (C4) GRN, (C5) BLUE and adjust for warm white in a white color bar pattern.

21. EXIT the Serviceman Mode.

22. Adjust the Picture Menu Video Adjustments Brightness and Contrast from low scale to high scale and check Black and White tracking.

23. If correction is needed: Re-Enter the Serviceman Mode and perform the Minor Touch – Up Method.

24. Perform Sub-Brightness Adjustment procedure if needed.

5. Connect the scope to RED Cathode (KR) on the CRT-Board.

6. In the Serviceman Mode for making electronic adjustments, select the RED CUTOFF DAC (C0).

7. Press the LST-CH key on the remote.

- 29 -

Service Adjustments (Electronic Controls, cont.)

10k

4700p

TPE11

RMS METER

Figure 23. Filter Jig

Horizontal Centering

Serviceman DAC Adjustment (D0) Preparation:

Connect a crosshatch generator.

Procedure:

1. In the Serviceman Mode for making electronic adjustments. Select the Horizontal Centering Adjustment DAC (D 0) and adjust until the cen ter of the crosshatch pattern is centered on CRT.

2. EXIT the Serviceman Adjustment Mode.

MTS Circuit Adjustments

The MTS Circuit Adjustments require two steps:

1. Input Level Adjustment.

2. Stereo Separation Adjustment.

Input Level Adjustment (M0)

Preparation:

1. Connect an RMS meter with fil ter jig as shown in Fig. 23.

Stereo Separation Adjustment (M1 & M2)

Preparation:

1. Connect an RF s ignal ge ner ato r to the RF antenna input.

2. Connect a scope to TPE10.

Procedure:

1. Select Stereo Mode in Audio menu

2. Apply the following signal from the RF signal generator: Video: 100 IRE flat field, 30% modulation. Audio: 300Hz, 100% modulation, stereo (le ft only) (70 ±5dB, 75Ω OPEN, P/S 10dB).

3. Adjust the MTS L ow-Level Separation Adjus tment (M1) until the amplitude displayed on the scope is minimum.

4. Apply the following signal from the RF signal generator:

Video: 100 IRE flat field, 30% modulation. Audio: 3KHz, 100% modulation, stereo (left only) (70 ±5dB, 75Ω OPEN, P/S 10dB).

5. Adjust the MTS High-Level Separat ion Adjustment (M2) until the amplit ude displayed on the s cope is minimum.

6. Repeat above steps 2 through 5 until the amplitude is at minimum for both signals.

2. Connect an RF signal generator to the RF antenna input.

Procedure:

1. Apply the following signal from the RF signal generator: Video: 100 IRE flat field, 30% modulation. Audio: 300Hz, 100% modulation, monaural

(70 ±5dB, 75Ω OPEN, P/S 10dB).

2. Adjust the MTS Input Level Adjustment (M0) until the voltage measured is 106 ± 6.0mV rms.

- 30 -

Service Adjustments (Electronic Controls, cont.)

Clock Adjustment (S7)

Preparation:

Connect the frequency counter from TPS1 (IC001 Pin 13) to cold ground ( ).

Note: Frequency Counter prob e capacitance should

be 8pF or less.

Procedure:

1. Turn the Receiver “OFF” with the AC power applied.

2. Measure TPS1 (IC001 pin 13) for the frequency of the waveform and record the reading.

Note: Pin 13 measurement must have at least four

digits of resolution followin g the decimal point. Example: 000.0000

3. Turn the Receiver back “ON”.

4. Place the Receiver into Serviceman Mode for making electronic adjustment, select the Clock Adjustment DAC (S7).

Service Adjustments (Mechanical Controls)

5. Calculate and set S7 based on the followingformula:

–

{}

244.1406

S7 128 0.9016×10

Note: Pin 13 measurement will not change

regardless of the value stored in S7.

----------------------------------------------------------------- -+=

244.1406

13 Hz[]

Vertical Size (D1)

1. Adjust the VERTICAL SIZE DAC control, D1, until the top and the bottom edges of the raster are visible.

2. Adjust the VERTICAL SIZE control, D1, until the top and the bottom of the raster touch the bezel edge. Then advance SIZE control to obtain an approximately 10 % oversc an. Linear ity adjus tment is done automatically when the size is being adjusted. (Best results can de obtained with a round test patter.)

Focus (part of T551)

Preparation:

Connect a Signal generator and select a dot pattern.

Procedure:

Adjust the FOCUS control to obtain the sharpest and clearest dot pattern. a. Adjust for best center. b. Adjust for best area between the center and top right corner.

- 31 -

Tuner

IC2201

MTS

AN5849S-E1V

MPX In

L OUT

Audio Signal Path Block Diagram

JK3002

13 15

3 5 8

RAV3

L-AV1

R-AV1

L-AV2

R-AV2

IC3001

A/V SW

M52790SP

LAV3

LRF1

RRF1

L1 Out L In

R1 Out

35 33

30 22 28

Front

Figure 24. Audio Signal Path Block Diagram.

A/V

Input

A/V

- 32 -

Input 1

A/V

Input 2

Variable

Audio

Out

JK3001

V2 L2 R2

JK3004

L Out R Out

21 22

IC2351

Bass/Tre/Bal

Surround

CXA2021S

R In

L Out

R Out

R OUT

IC2302

Audio Out

AN5272

JK3002

L Out

R Out

IC001

L In

R In

VAO L VAO R

4 1

7 6 2 3

4 5 1

Headphone

Jack

MPU

Q2409

D2343

MN101C46FTA

S-Defeat

Q2410

Video-Chroma Signal Path Block Diagram

CRT

Q351

Q352

Q353

A11-1 C1-1

A11-2 C1-2

A11-3 C1-3

IC6501

MN82840

Y In

Comb Filter

Y Out

C Out

Chroma

R Out

C641

–

G Out

Sync In

B Out

YM/YS In

R In

G In

VCJ

IC101

B In

R-Y In

TA1310BN

B-Y In

C225 C226

Tuner

Q6504

Luma In Filter

JK3001

PBPRV2

Y/V1

Q6509

Q6516

C6529

RF1

Luma Out Filter

–

C3019

V1 Out

Video1

Q6510

–

Y In

Y-YUV

Q6502

Q6506

Chroma Out Filter

Video212Video3

JK3002

Q6501

Q6514

Q6519

Q6505

C In

IC3001

A/V SW

Q603

C1 Out

M52790SP

Y-AV 2

JK3003

D014

D015

CVBS0

CVBS1

Q201

Q303

–

C315

IC001

MPU

MN101C46FTA

C314

+ –

Y1 Out

V2 Out

C-AV2

Q302

Video

Input 1

Input 2

Front

Video

Input 3

S-Video

Figure 25. Video-Chroma Signal Path Block Diagram.

- 33 -

IC101 IN/OUT Pins and Functions (VCJ)

IC101

TA1310BN

Velocity Scanning

Modulation

Green Input

Blue Input

RGB/Half Tone In

Hold Down

V Reg

VSM Out

2Ground

GND

3Red Input

R In

G In

B In

YS / YM In Hold Down Reference

7HD Reference 8

Hold Down

V Reg

10Ground

RGB Mute

11Brightness Control

ABL In

12NC

VK Out

13Red Output

R Out

14Green Output

G Out

DC RC

BP DET

Y In B-Y In R-Y In

VCJ

CW Out

X-tal R-Y Out B-Y Out

APC

Chroma In

GND

DL Out

56 55 Black Peak Detection 54 53 R-Y Input 52 B-Y Input 51 VCC 5V 50 3.58MHz Clock Output 49 3.58MHz X-tal 48 NC 47 46 45 44 43

DC Restoration Correction

Luminance Signal Input

NC APC Filter Chroma Input Ground Delayed Y Signal

Green Cutoff

Blue Cutoff

15Blue Output

B Out

16VCC 9V

17Red Cutoff

R Filter

G Filter

B Filter

20Noise filter

Noise Filter

21NC

V Centering

22NC

EW FB

23NC

EW Out

24Vertical Output

V Out

25Vertical Feedback

V NFB

26Automatic Gain

V AGC

27Vertical Ramp

V Ramp

28Vertical EHT Input

EHT V

Bend Correction

32 fh VCO

AFC1

V Sep

Y/Sync In

DEF V

Sync Out

H Out

FBP In VD Out HD Out

GND

SDA

SCL

42 Horizontal Correction 41 Horizontal Oscillation 40 AFC1 detection 39 Vertical Separation 38 Video Sync 37 9V 36 NC 35 34 Flyback Pulse 33 32 NC 31 Ground 30 29 I2C SCL Input

Horizontal Output

Vertical Drive Pulse

I2C SDA I/0

Figure 26. VCJ IN/OUT Pins and Functions.

- 34 -

IC001 IN/OUT Pins and Functions (MPU)

IC001

MN101C46FTB

Remote signal in

SDA1

SCL1

AFC1

AFC2

Key Scan 1

Action

S-VHS

Version

FA1

YUV SW

RMIN

P01

P02

ADIN0

ADIN1

ADIN2

ADIN3

P07

ADIN5

ADIN6

P12

VSS

OSC1

OSC2

VDD (VPP)

P42

P41

P40

VSYNC

NRST

ROUT

GND

14.32MHz X-tal

+3.3V

SCL0

SDA0

Not used/open

V-Sync

NRST

R Out

+3.3V

System Clock Out

Volume

RFAGC

TV / Video

Sound Defeat

Power

Speaker On / Off

+3.3V

Closed Caption

MMOD

SYSCLK

PWM0

PWM1

P16

P17

P20

PWM5

VDD

CLL

GOUT

BOUT

FLASH

HSYNC

VREFH0

CVBS0

CVBS1

VREF1

CLH

G Out

B Out

GND

H-Sync

Closed Caption 0

Closed Caption 1

Closed Caption

Figure 27. MPU IN/OUT Pins and Functions.

- 35 -

Component Identification

3 screws at the top edge of the receiver

1 screw at the lower edge of the receiver

1 screw by audio out jacks

1 screw by the A/V jacks

1 screw on the retainer plate for the AC power cord

1 screw by the flyback assembly

Figure 28. Back Cover Removal

- 36 -

1 screw at the lower edge of the receiver

Component Identification

CRT (secured to cabinet by 4 screws on corners of CRT)

Yoke

DAG ground

Anode (high voltage)

Degaussing coil

C board

Speaker (4 screws)

Tuner

VAO Out

Flyback (T551)

A/V jacks

Note:

remember to dress the cables, as shown.

After servicing the receiver,

Figure 29. Rear View

- 37 -

Speaker (4 screws)

Component Identification

MTS processor IC2201 is located on the other side of the board.

NO. LOCATION OF COMPONENTS

INTEGRATED CIRCUITS CONNECTORS TRANSISTORS VARIOUS

1 IC 001 MPU 8 FRONT AV IN 13 Q501 H. DRIVE 15 T551 (FLYBACK) 2 IC 002 EEPROM 9 FRONT KEYPAD 14 Q551 H. OUT 16 FUSE 3 IC 101 VCJ 10 REAR AV IN 17 TUNER 4 IC 2302 AUDIO 11 S-VIDEO IN 5 IC 2351 BASS/TRE/BAL 12 VAO OUT 6 IC 3001 A/V SWITCH 7 IC 6501 COMB FILTER

Figure 30. View of Main Board Assemblies

- 38 -

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE have special charact eristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

CAPRISTORS

CRA801 TP00842-51 TAPING GAP TERMINAL CRA802 TP00842-51 TAP ING GAP TERMINAL

CAPACITORS

C001 ECA1CM470 CAP,E 47UF/16V C002 ECJ2VF1H103Z CAP,C .01UF-Z-50V C003 ECA1HM4R7 CAP,E 4.7UF/50V C005 ECA1CM470 CAP,E 47UF/16V C006 ECJ2VF1H103Z CAP,C .01UF-Z-50V C008 ECJ2VF1H103Z CAP,C .01UF-Z-50V C010 ECJ2VF1H103Z CAP,C .01UF-Z-50V C013 ECA0JM101 CAP, E 100UF/6.3V C016 ECJ2VC1H101J CAP,C 100PF-J-50V C017 ECJ2VC1H270J CAP,C 27PF-J-50V C018 ECJ2VC1H270J CAP,C 27PF-J-50V C020 ECA0JM331 CAP, E 330UF/6.3V C021 ECJ2VF1H103Z CAP,C .01UF-Z-50V C022 ECA1EM471 CAP,E 470UF/25V C024 ECA1HM4R7 CAP,E 4.7UF/50V C025 ECA1HM010 CAP,E 1.0UF/50V C026 ECA1HM010 CAP,E 1.0UF/50V C032 ECA1CM331 CAP,E 330UF/16V C033 ECJ2VC1H680J CAP,C 68PF-J-50V C034 ECJ2VC1H680J CAP,C 68PF-J-50V C043 ECA1HM2R2 CAP,E 2.2UF/50V C044 ECJ2VF1H103Z CAP,C .01UF-Z-50V C047 ECA0JM102 CAP ,E 1000UF/6.3V C048 ECJ2VF1H103Z CAP,C .01UF-Z-50V C201 ECJ2VB1C104K CAP,C .1UF-I-16V C224 ECJ2VB1C104K CAP,C .1UF-I-16V C225 ECJ2VB1C104K CAP,C .1UF-I-16V C226 ECJ2VB1C104K CAP,C .1UF-I-16V C301 ECJ2VB1C104K CAP,C .1UF-I-16V C302 ECJ2VB1C104K CAP,C .1UF-I-16V C303 ECJ2VB1C104K CAP,C .1UF-I-16V C307 ECA1HM0R1 CAP,E 0.1UF/50V C309 ECJ2VC1H390J CAP,C 39PF-J-50V C310 ECJ2VC1H390J CAP,C 39PF-J-50V C314 EEANA1E1R0B CAP,E 1.0UF-25V C315 EEANA1E1R0B CAP,E 1.0UF-25V C320 ECJ2VF1H104Z CAP,C .1UF-Z-50V C321 ECJ2VB1H103K CAP,C .01UF-K-50V C322 ECJ2VB1H103K CAP,C .01UF-K-50V C323 ECJ2VB1H103K CAP,C .01UF-K-50V C324 ECJ2VF1H104Z CAP,C .1UF-Z-50V C330 ECA1AM101 CAP,E 100UF/10V C331 ECJ2VF1H103Z CAP,C .01UF-Z-50V C337 ECA1HM2R2 CAP,E 2.2UF/50V C342 ECA1HM010 CAP,E 1.0UF/50V C351 TACCW331T50V CAP,C 330PF/50V C352 TACCW331T50V CAP,C 330PF/50V

154-00

REF NO. PART NO. DESCRIPTION

C353 TACCW331T50V CAP,C 330PF/50V C354 ECKD3D102KB CAP,C .001UF-K-2KV C357 EEANA1E1R0B CAP,E 1.0UF-25V C401 ECJ2VB1C104K CAP,C .1UF-I-16V C403 ECA1HM010 CAP,E 1.0UF/50V C404 ECA1HM010 CAP,E 1.0UF/50V C405 ECSF1EE105 CAP,T 1.0UF/25V C407 ECA1CM100 CAP,E 10UF/16V C409 ECJ2VC1H101J CAP,C 100PF-J-50V C415 ECJ2VF1H104Z CAP,C .1UF-Z-50V C451 ECA1HM2R2 CAP,E 2.2UF/50V C452 ECQB1H473JM CAP,P .047UF-J-50V C453 ECA1VM471 CAP,E 470UF/35V C454 ECA1VM221 CAP,E 220UF/35V C455 ECA1EM222 CAP,E 2200UF-25V C456 ECCF1H020CC CAP,C 2PF-C-50V C457 ECJ2VB1C104K CAP ,C .1UF-I-16V C458 ECA1CM101 CAP,E 100UF/16V C459 ECQM1104JZ CAP,P .1UF-J-100V C502 ECA1CM221 CAP,E 220UF/16V C503 ECJ2VC1H221J CAP,C 220PF-J-50V C504 ECQB1H222JM CAP,P 2200PF-J-50V C505 ECJ2VC1H180J CAP,C 18PF-J-50V C506 ECA1CM471 CAP,E 470UF/16V C507 ECJ2VF1H103Z CAP,C .01UF-Z-50V C508 ECJ2VC1H102J CAP,C .001UF-J-50V C510 ECCD2H100D CAP,C 10PF-D-500V C511 ECKD2H821KB CAP,C 820PF-K-500V C512 ECKD2H101KB CAP,C 100PF-K-500V C514 ECA1HMR22 CAP,E .22UF/50V C515 ECJ2VC1H222J CAP,C .0022UF-J-50V C516 ECJ2VC1H391J CAP,C 390PF-J-50V C517 ECJ2VC1H221J CAP,C 220PF-J-50V C518 ECJ2VC1H151J CAP,C 150PF-J-50V C519 ECJ2VF1H104Z CAP,C .1UF-Z-50V

C531 ECA1EM220 CAP,E 22UF/25V C551 ECA1VM331 CAP,E 330UF/35V C552 ECA1CM331 CAP,E 330UF/16V C553 ECA1CM331 CAP,E 330UF/16V

C554 ECKD2H561KB CAP,C 560PF-K-500V

C555 ECA2EM220 CAP,E 22UF-250V C556 ECA1CM102 CAP,E 1000UF/16V

C557 ECKD2H102KB CAP,C .001UF-K-500V

C558 ECA1CM221 CAP,E 220UF/16V C560 ECEA1HN2R2U CAP,E 2.2UF/50V

C561 ECKD2H561KB CAP,C 560PF-K-500V C562 ECKD2H561KB CAP,C 560PF-K-500V

C563 ECWH12H822JS CAP,P .0082UF-J-1.2KV C564 ECWH12H272JS CAP,P .0027UF-J-1.2KV C565 ECKD3D122JB CAP,C .0012UF-J-2KV C566 ECKD3D181JB CAP,C 180PF-J-2KV

- 39 -

Parts List

PARTS LIST

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE ha ve special characteristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

C568 ECQM2274JZ CAP,P .27UF-J-200V C569 TACFV2E474J CA P,M .47UF-J-200V

C571 ECA1CM471 CAP,E 470UF/16V C572 ECA1CM100 CAP,E 10UF/16V C573 ECA1CM101 CAP,E 100UF/16V C601 ECJ2VF1H103Z CAP,C .01UF-Z-50V C603 ECQB1H223JM CAP,P .022UF-J-50V C616 ECJ2VB1C104K CAP,C .1UF-I-16V C641 ECA1HM100 CAP,E 10UF/50V

C801 ECKDAE472ZED CAP,C .4700PF-Z-250VAC C802 ECKDAE472ZED CAP,C .4700PF-Z-250VAC C803 ECKDAE472ZED CAP,C .4700PF-Z-250VAC C804 ECKDAE472ZED CAP,C .4700PF-Z-250VAC C805 EC0S2DA221BB CAP,E 220UF/200V C806 EC0S2DA221BB CAP,E 220UF/200V

C807 ECA1HM2R2 CAP,E 2.2UF/50V C808 ECA1CM101 CAP,E 100UF/16V

C809 EC0S2DG151DG CA P,E 151UF/200V C810 ECQU2A153MV CAP,P .015UF-M-250V C811 ECQU2A153MV CAP,P .015UF-M-250V C812 ECQU2A224MV CAP,P .22UF-M-250VAC

C814 ECQB1H823JM CAP,P .082UF-J-50V C815 ECA1EHG101B CAP,E 100UF-25V C818 ECKD3A821KB CAP,C 820PF-K-1KVDC

C820 ECA1JHG100B CAP, E 10UF-63V

C821 ECKD2H561KB CAP,C 560PF-K-500V

C822 ECA1EM221 CAP,E 220UF/25V C823 ECA160V33UE CAP,E 33UF/160V

C824 ECKD3A331KB CAP,C 330PF-K-1KV C825 ECKD3A471KB CAP,C 470PF-K-1KV C2202 ECA1HM2R2 CAP,E 2.2UF/50V C2203 ECA1HM4R7 CAP,E 4.7UF/50V C2204 AP106K016CAE CAP,T 10UF/16V C2205 ECA1HM010 CAP ,E 1.0UF/50V C2206 ECQB1H223JM CAP,P .022UF-J-50V C2207 AP335K016CAE CAP,T 3.3UF/16V C2208 ECJ2VB1C104K CAP,C .1UF-I-16V C2209 ECJ2VB1C104K CAP,C .1UF-I-16V C2210 ECJ2VB1C104K CAP,C .1UF-I-16V C2211 ECA1CM100 CAP,E 10UF/16V C2212 ECQB1H473JM CAP ,P .047UF-J-50V C2215 ECA0JM101 CAP,E 100UF/6.3V

PARTS LIST

C2218 ECA1HMR47 CAP,E .47UF/50V C2301 ECA1VM102 CAP,E 1000UF/35V C2302 ECA1HM010 CAP,E 1.0UF/50V C2305 ECA1HM010 CAP ,E 1.0UF/50V C2306 ECJ2VF1H103Z CAP,C .01UF-Z-50V C2307 ECA1CM102 CAP ,E 1000UF/16V C2309 ECQB1H473JM CAP ,P .047UF-J-50V C2311 ECA1HM3R3 CAP,E 3.3UF/50V C2313 ECA1EM101 CAP,E 100UF/25V

REF NO. PART NO. DESCRIPTION

C2314 ECQB1H473JM CAP,P .047UF-J-50V C2315 ECA1EM100 CAP,E 10UF/25V C2321 ECA1EM100 CAP,E 10UF/25V C2324 ECA1EM100 CAP,E 10UF/25V C2325 ECA1CM102 CAP ,E 1000UF/16V C2326 ECJ2VB1H223K CAP,C .022UF-K-50V C2327 ECJ2VB1H223K CAP,C .022UF-K-50V C2328 ECJ2VB1H223K CAP,C .022UF-K-50V C2329 ECJ2VB1H223K CAP,C .022UF-K-50V C2331 ECA1HM010 CAP ,E 1.0UF/50V C2333 ECA1HM010 CAP ,E 1.0UF/50V C2339 ECA1HM010 CAP,E 1.0UF/50V C2340 ECA1HM010 CAP ,E 1.0UF/50V C2342 ECA1AM470 CAP,E 47UF/10V C2350 EEANA1E100B CAP,E 10UF-25V C2351 ECJ2VB1C104K CAP,C .1UF-I-16V C2352 ECJ2VB1H472K CAP,C .0047UF-K-50V C2353 ECA1HM4R7 CAP,E 4.7UF/50V C2354 ECA1HM4R7 CAP,E 4.7UF/50V C2355 ECA1HM4R7 CAP,E 4.7UF/50V C2356 ECA1HMR47 CAP,E .47UF/50V C2357 ECA1CM100 CAP,E 10UF/16V C2358 EEANA1E100B CAP,E 10UF-25V C2359 ECJ2VB1C104K CAP,C .1UF-I-16V C2360 ECJ2VB1H472K CAP,C .0047UF-K-50V C2361 ECA1AM470 CAP,E 47UF/10V C2362 ECQB1H104JM CAP,P .1UF-J-50V C2363 ECJ2VB1C104K CAP,C .1UF-I-16V C2364 ECA1HM4R7 CAP,E 4.7UF/50V C2365 ECA1AM470 CAP,E 47UF/10V C2366 ECJ2VF1H103Z CAP,C .01UF-Z-50V C3001 ECJ2VF1H103Z CAP,C .01UF-Z-50V C3002 ECA1AM101 CAP,E 100UF/10V C3003 ECA1CM100 CAP,E 10UF/16V C3004 ECA1HM010 CAP ,E 1.0UF/50V C3006 ECA1HM010 CAP ,E 1.0UF/50V C3007 ECA1CM100 CAP ,E 10UF/16V C3008 ECA1CM100 CAP,E 10UF/16V C3009 ECA1HM010 CAP ,E 1.0UF/50V C3010 ECJ2VF1H103Z CAP,C .01UF-Z-50V C3011 ECA1HM010 CAP,E 1.0UF/50V C3012 ECA1CM100 CAP,E 10UF/16V C3013 ECA1CM100 CAP ,E 10UF/16V C3014 ECA1HM010 CAP ,E 1.0UF/50V C3016 ECA1HM010 CAP ,E 1.0UF/50V C3018 ECA1CM100 CAP,E 10UF/16V C3019 ECA1CM100 CAP ,E 10UF/16V C3020 ECA1HM010 CAP ,E 1.0UF/50V C3021 ECJ2VF1H103Z CAP,C .01UF-Z-50V C3022 ECA1HM010 CAP,E 1.0UF/50V C3023 ECA1CM100 CAP ,E 10UF/16V

Parts List

- 40 -

154-00

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE have special charact eristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

C6501 ECA0JM101 CAP,E 100UF/6.3V C6502 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6504 ECJ2VC1H270J CAP,C 27PF-J-50V C6507 ECJ2VC1H120J CAP,C 12PF-J-50V C6510 ECJ2VC1H120J CAP,C 12PF-J-50V C6511 ECA1HM010 CAP,E 1.0UF/50V C6512 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6513 ECJ2VC1H270J CAP,C 27PF-J-50V C6516 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6517 ECEA1HN010U CAP ,E 1UF/50V C6518 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6520 ECA1CM100 CAP ,E 10UF/16V C6521 ECA1AM470 CAP,E 47UF/10V C6522 ECJ2VC1H221J CAP,C 220PF-J-50V C6523 ECJ2VF1H104Z CAP,C .1UF-Z-50V C6524 ECA1HM010 CAP ,E 1.0UF/50V C6525 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6526 ECA1CM100 CAP ,E 10UF/16V C6527 ECJ2VF1H104Z CAP,C .1UF-Z-50V C6528 ECA1AM470 CAP,E 47UF/10V C6529 ECA1CM100 CAP ,E 10UF/16V C6531 ECJ2VF1H103Z CAP,C .01UF-Z-50V C6532 ECJ2VF1H103Z CAP,C .01UF-Z-50V

DIODES

D001 ERA15-01 DIODE D002 MA165 DIODE D003 MA4056M DIODE D006 MA4330H DIODE D007 ERA15-01 DIODE D008 ERA15-01 DIODE D009 ERA15-01 DIODE D011 MA165 DIODE D014 MA165 DIODE D015 MA165 DIODE D018 MA165 DIODE D451 ERA15-01 DIODE

D502 MA4062L DIODE

D530 MA4082L DIODE

D531 AS01 DIODE

D532 MA4091M DIODE, ZENER D533 MA4091M DIODE, ZENER

D551 TVSRU2N DIODE D554 BYD33G-163 DIODE

D555 MA165 DIODE D556 MA4360H DIODE, ZENER

D557 TVSRU2N DIODE D558 RS3FS DIODE D559 BYD33G-113 DIODE D561 BYD33G-163 DIODE D801 GP15KL-042 DIODE D802 GP15KL-042 DIODE

REF NO. PART NO. DESCRIPTION D805 TAP111M003 DIODE

D806 MA4047M DIODE, ZENER D807 MA165 D IODE

D809 RU3YX-M DIODE

D820 EU02V1 DIODE D821 EU02V1 DIODE D822 EU02V1 DIODE D823 RL30A DIODE D824 EU02V1 DIODE

D825 TVSSR2KL DIODE, PROTECTION

D826 EU02V1 DIODE D829 MA165 DIODE

D830 MA4270M DIODE

D2301 MA165 DIODE D2305 MA4110M D IODE, ZENER D2306 MA4110M DIODE, ZENER D2307 MA4110M D IODE, ZENER D2308 MA4110M DIODE, ZENER D2315 MA165 DIODE D2342 MA165 DIODE D2343 MA165 DIODE D3001 MA4110M DIODE, ZENER D3002 MA4110M D IODE, ZENER D3003 MA4110M DIODE, ZENER D3004 MA4110M D IODE, ZENER D3005 MA4110M DIODE, ZENER D3006 MA4110M D IODE, ZENER D3007 MA4110M DIODE, ZENER D3008 MA4110M D IODE, ZENER D3009 MA4110M DIODE, ZENER D3010 MA4110M D IODE, ZENER D3015 MA4110M DIODE, ZENER D3016 MA4110M D IODE, ZENER D3017 MA4110M DIODE, ZENER D3018 MA4110M D IODE, ZENER D3019 MA4110M DIODE, ZENER D3020 MA4110M D IODE, ZENER D3021 MA4110M DIODE, ZENER D3022 MA4110M D IODE, ZENER

FUSES

F801 XBA2A00101 FUSE 6.3A 125V

F801-1 TP00351-51 FUSE CLIP F801-2 TP00351-51 FUSE CLIP

INTEGRATED CIRCUITS

IC001 MN101C46FTB INT CKT

IC002 M24C08-WBN6 INT CKT IC003 PIC-26042SR INT CKT IC005 PQ1R33 INT CKT IC006 PST9229NR INT CKT (RESET)

IC101 TA1310BN INT CKT IC451 LA7845N INT CKT

PARTS LIST

154-00

- 41 -

Parts List

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE ha ve special characteristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

IC551 AN78M09 PLUS 9V AVR IC552 AN7805 INT CKT

IC801 PC817X2 INT CKT IC803 STR58041A INT CKT

IC2201 AN5849S-E1V INT CKT IC2302 AN5272 INT CKT IC2351 CXA2021S INT CKT IC3001 M52790SP INT CKT A/V SWITCH IC6501 MN82840 INT CKT IC6502 PST9142NR INT CKT

COILS

L001 EXCELSA 35 F E RRITE BEAD L002 TLTABT2R2K COIL, PEAKING 2.2UH L003 TLTABT2R2K COIL, PEAKING 2.2UH L004 TLTABT2R2K COIL, PEAKING 2.2UH L005 ELESN330KA COIL, PEAK ING 33UH L006 EXCELSA24T FERRITE BEAD L008 TLTABT470K COIL, PEAKING 47UH L010 TLTABT2R2K COIL, PEAKING 2.2UH L011 TLTABT2R2K COIL, PEAKING 2.2UH L012 TLTABT2R2K COIL, PEAKING 2.2UH L013 TLTABT2R2K COIL, PEAKING 2.2UH L106 EXCELSA35T FERRITE BEAD L218 EXCELSA35T FERRITE BEAD L319 TLTABT101K COIL, PE AK ING L351 TLTABT101K COIL, PEAKING L501 ELESN3R3KA COIL, PEAKING 3.3UH L515 TLTABT101K COIL, PEAKING L518 TLTABT120K COIL, PEAKING 12UH L541 EXCELDR35 FERRITE BEAD

L551 ELH5L7103 COIL

L554 EXCELSA24T FERRITE BEAD L555 EXCELSA24T FERRITE BEAD L556 EXCELSA24T FERRITE BEAD

L801 ELF20N020A COIL, 2UH L803 ELF17N007A LINE FILTER

L804 EXCELSA3 9 FERRITE BEAD L2310 TLTABT2R2K COIL, PEAK ING 2.2UH L6502 ELESN330JA COIL, PEAKING 33UH L6505 ELESN330JA COIL, PEAKING 33UH L6507 ELESN150KA COIL, PEAKING 15UH L6508 EXCELSA35T FERRITE BEAD

PARTS LIST

Q001 2SD601ARTX TRANSISTOR Q002 2SC1685QRS TRANSISTOR Q003 2SD601ARTX TRANSISTOR Q004 2SC1685QRS TRANSISTOR Q005 2SD601ARTX TRANSISTOR Q201 2SD601ARTX TRANSISTOR Q302 2SD601ARTX TRANSISTOR Q303 2SD601ARTX TRANSISTOR

TRANSISTORS

REF NO. PART NO. DESCRIPTION

Q351 2SC3063 TRANSISTOR Q352 2SC3063 TRANSISTOR Q353 2SC3063 TRANSISTOR Q401 2SD601ARTX TRANSISTOR Q402 2SD601ARTX TRANSISTOR

Q501 2SC4212H TRANSISTOR

Q509 2SD601ARTX TRANSISTOR Q515 2SD601ARTX TRANSISTOR

Q551 2SD2539MA1 TRANSISTOR

Q603 2SD601ARTX TRANSISTOR Q801 2SC1685RSTA TRANSISTOR Q802 2SC1384RS TRANSISTOR Q2302 2SB709ARTX TRANSISTOR Q2303 2SD601ARTX TRANSISTOR Q2342 2SB709ARTX TRANSISTOR Q2343 2SD601ARTX TRANSISTOR Q2344 2SD601ARTX TRANSISTOR Q2409 2SD601ARTX TRANSISTOR Q2410 2SD601ARTX TRANSISTOR Q6501 2SD601ARTX TRANSISTOR Q6502 2SD601ARTX TRANSISTOR Q6504 2SD601ARTX TRANSISTOR Q6505 2SD601ARTX TRANSISTOR Q6506 2SD601ARTX TRANSISTOR Q6509 2SD601ARTX TRANSISTOR Q6510 2SB709ARTX TRANSISTOR Q6514 2SB709ARTX TRANSISTOR Q6516 2SB709ARTX TRANSISTOR Q6517 2SD601ARTX TRANSISTOR Q6519 2SD601ARTX TRANSISTOR

RELAYS

RL801 TSEH8007 RELAY

RESISTORS

R002 ERJ6GEYJ182 RES, M 1. 8K-J -1/10 R003 ERJ6GEYJ562 RES,M 5.6K-J-1/10 R004 ERDS1TJ122 RES,C 1.2K -J-1/ 2 R005 ERDS2TJ101 RES,C 100-J-1 /4 R006 ERDS1TJ181 RES,C 180-J-1/2 R007 ERJ6GEYJ103 RES, M 10K -J-1/ 10 R008 ERJ6GEYJ103 RES,M 10K-J-1/10 R009 ERJ6GEYJ221 RES,M 220-J-1/10 R010 ERJ6GEYJ103 RES,M 10K-J-1/10 R012 ERJ6GEYJ102 RES, M 1K -J-1/ 10 R013 ERJ6GEYJ223 RES,M 22K-J-1/10 R014 ERJ6GEYJ472 RES,M 4.7K-J-1/10 R015 ERJ6GEYJ472 RES, M 4. 7K-J -1/10 R016 ERJ6GEYJ472 RES,M 4.7K-J-1/10 R017 ERJ6GEYJ472 RES, M 4. 7K-J -1/10 R020 ERJ6GEYJ682 RES,M 6.8K-J-1/10 R021 ERJ6GEYJ101 RES,M 100-J -1/10 R022 ERJ6GEYJ101 RES,M 100-J-1/10

Parts List

- 42 -

154-00

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE have special charact eristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

R023 ERJ6GEYJ102 RES,M 1K-J-1/ 10 R024 ERJ6GEYJ221 RES,M 220-J-1/10 R025 ERJ6GEYJ223 RES,M 22K-J-1/ 10 R027 ERJ6GEYJ103 RES,M 10K- J-1/1 0 R028 ERJ6GEYJ223 RES,M 22K-J-1/ 10 R030 ERJ6GEYJ102 RES,M 1K- J-1/1 0 R032 ERJ6ENF1002 RE S,M 10K-F-1/10 R033 ERJ6GEYJ272 RES,M 2.7K-J -1/10 R034 ERJ6GEYJ222 RES,M 2.2K-J -1/10 R035 ERJ6GEYJ362 RES,M 3.6K-J -1/10 R036 ERJ6GEYJ562 RES,M 5.6K-J -1/10 R037 ERJ6GEYJ103 RES,M 10K- J-1/1 0 R038 ERJ6GEYJ223 RES,M 22K-J-1/ 10 R039 ERJ6GEYJ102 RES,M 1K- J-1/1 0 R040 ERJ6GEYJ472 RES,M 4.7K-J -1/10 R041 ERJ6GEYJ472 RES,M 4.7K-J -1/10 R042 ERJ6GEYJ102 RES,M 1K-J-1/ 10 R044 ERJ6GEYJ222 RES,M 2.2K-J -1/10 R045 ERJ6GEYJ223 RES,M 22K-J-1/ 10 R046 ERJ6GEYJ333 RES,M 33K- J-1/1 0 R047 ERJ6GEYJ562 RES,M 5.6K-J -1/10 R049 ERJ6GEYJ101 RES,M 100-J-1/10 R060 ERJ6GEYJ471 RES,M 470-J-1/10 R065 ERJ6GEYJ101 RES,M 100-J-1/10 R066 ERJ6GEYJ103 RES,M 10K-J-1/ 10 R067 ERJ6GEYJ103 RES,M 10K- J-1/1 0 R068 ERJ6GEYJ103 RES,M 10K-J-1/ 10 R072 ERJ6GEYJ562 RES,M 5.6K-J -1/10 R073 ERJ6GEYJ562 RES,M 5.6K-J -1/10 R074 ERJ6GEYJ562 RES,M 5.6K-J -1/10 R075 ERJ6GEYJ102 RES,M 1K-J-1/ 10 R076 ERJ6GEYJ102 RES,M 1K- J-1/1 0 R077 ERJ6GEYJ102 RES,M 1K-J-1/ 10 R078 ERJ6GEYJ101 RES,M 100-J-1/10 R079 ERJ6GEYJ101 RES,M 100-J-1/10 R201 ERJ6GEYJ331 RES,M 330-J-1/10 R223 ERJ6GEYJ561 RES,M 560-J-1/10 R225 ERJ6GEYJ331 RES,M 330-J-1/10 R226 ERJ6GEYJ331 RES,M 330-J-1/10 R245 ERJ6GEYJ224 RES,M 220K -J-1/1 0 R301 ERJ6GEYJ331 RES,M 330-J-1/10 R302 ERJ6GEYJ331 RES,M 330-J-1/10 R303 ERJ6GEYJ331 RES,M 330-J-1/10 R305 ERJ6GEYJ682 RES,M 6.8K-J -1/10 R306 ERJ6GEYJ103 RES,M 10K-J-1/ 10 R309 ERJ6GEYJ332 RES,M 3.3K-J -1/10 R310 ERJ6GEYJ332 RES,M 3.3K-J -1/10 R312 ERJ6GEYJ393 RES,M 39K- J-1/1 0 R328 ERJ6GEYJ105 RES,M 1.0ME G-J-1/ 10 R341 ERJ6GEYJ474 RES,M 470K -J-1/1 0 R351 ERG2FJ123H RES,M 12K- J-2W

REF NO. PART NO. DESCRIPTION

R352 ERG2FJ123H RES,M 12K-J-2W R353 ERG2FJ123H RES,M 12K-J-2W R354 ERDS1TJ272 RES,C 2.7K-J-1/ 2 R355 ERDS1TJ272 RES,C 2.7K -J-1/ 2 R356 ERDS1TJ272 RES,C 2.7K-J-1/ 2 R357 ERDS2TJ181 RES,C 180-J-1/4 R358 ERDS2TJ181 RES,C 180-J-1 /4 R359 ERDS2TJ181 RES,C 180-J-1/4 R360 ERDS2TJ821 RES,C 820-J-1 /4 R361 ERDS2TJ821 RES,C 820-J-1/4 R362 ERDS2TJ821 RES,C 820-J-1 /4 R363 ERDS2TJ101 RES,C 100-J-1/4 R364 ERDS2TJ101 RES,C 100-J-1 /4 R365 ERDS2TJ101 RES,C 100-J-1/4 R401 ERJ6GEYJ102 RES,M 1K-J-1/10 R402 ERJ6GEYJ471 RES,M 470-J-1/10 R403 ERJ6GEYJ622 RES,M 6.2K-J-1/10 R405 ERJ6GEYJ102 RES,M 1K-J-1/10 R408 ERJ6GEYJ331 RES,M 330-J-1/10 R409 ERJ6GEYJ271 RES,M 270-J-1/10 R410 ERJ6ENF1272 RES,M 12.7K-F-1/10W R411 ERJ6ENF6801 RES,M 6.8K-F-1/10 R412 ERDS2TJ123 RES,C 12K-J-1/4 R452 ERDS1FJ1R8 RES,C 1.8-J-1/2 R453 ERJ6GEYJ123 RES,M 12K-J-1/10 R454 ERJ6GEYJ473 RES,M 47K-J-1/10 R455 ERJ6GEYJ103 RES,M 10K-J-1/10 R456 ERG3FJ151H RES,M 150-J-3W R457 ERDS1FJ1R5 RES,C 1.5-J-1/2 R458 ERDS1FJ2R7 RES,C 2.7-J-1/2 R460 ERJ6GEYJ103 RES,M 10K-J-1/10 R461 ERJ6GEYJ223 RES,M 22K-J-1/10 R465 ERJ6GEYJ104 RES,M 100K-J-1/10 R468 ER0S2CKF4321 RES,M 4.32K-F-1/4 R469 ER0S2CKF1471 RES,M 1.47K-F-1/4 R470 ERDS2TJ102 RES,C 1K-J -1/4 R501 ERJ6GEYJ301 RES,M 300-J-1/10 R502 ERJ6GEYJ562 RES,M 5.6K-J-1/10 R504 ERJ6GEYJ333 RES,M 33K-J-1/10 R505 ERDS1TJ181 RES,C 180-J-1/2 R506 ERJ6GEYJ682 RES,M 6.8K-J-1/10 R507 ERJ6GEYJ561 RES,M 560-J-1/10 R508 ERJ6GEYJ471 RES,M 470-J-1/10 R509 ERJ6GEYJ221 RES,M 220-J-1/10

R510 ERG3FJ362H RES,M 3.6K-J-3W R511 ERG3FJ362H RES,M 3.6K-J-3W

R512 ERG2FJ392H RES,M 3.9K-J-2W R513 ERJ6GEYJ471 RES,M 470-J-1/10 R514 ERJ6GEYJ152 RES,M 1.5K-J-1/10 R515 ERJ6GEYJ562 RES,M 5.6K-J-1/10 R516 ERJ6GEYJ272 RES,M 2.7K-J-1/10

PARTS LIST

154-00

- 43 -

Parts List

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE ha ve special characteristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

R517 ERJ6GEYJ181 RES,M 180-J-1/10

R531 ERD25FJ470 RES,C 47-J-1/4 R532 ERJ6ENF5602 RES,M 56K-F-1/10 R533 ERJ6ENF2102 RES,M 21K-F-1/10 R550 ERDS1FJ1R0 RES,C 1.0-J-1/2 R551 ERDS1FJ1R0 RES,C 1.0-J-1/2 R552 ERDS1FJ1R0 RES,C 1.0-J-1/2

R553 ERG3FJ270H RES,M 27-J-3W R556 ERJ6GEYJ272 RES,M 2.7K-J- 1/10 R557 ERJ6GEYJ103 RES,M 10K- J-1/1 0 R558 ERQ1CKPR22 RES,F .22-K-1W R559 ERG2FJ683H RES,M 12K-J-2W R560 TLTABT101K COIL, PEAKING R561 ERG2FJ102H RES,M 1K-J-2W R563 ERDS2TJ683 RES,C 68K-J -1/4 R564 ERDS2TJ823 RES,C 82K-J-1/4

R566 ERDS1FJ1R0 RES,C 1.0-J-1/2

R574 ERG2FJ270H RES,M 27-J-2W R601 ERJ6GEYJ391 RES,M 390-J-1/10 R618 ERJ6GEYJ474 RES,M 470K -J-1/1 0 R619 ERJ6GEYJ563 RES,M 56K-J-1/ 10 R620 ERJ6GEYJ153 RES,M 15K- J-1/1 0

R801 ERF7ZK1R5 RES,W 1.5-K-7W

R804 ERW12PK1R8 RES,W 1.8-K-1/2W R805 ERDS2TJ274 RES,C 270K-J-1/4 R806 ERDS2TJ274 RES,C 270K-J-1/4 R808 ERDS1FJ1R0 RES,C 1.0-J-1/2 R809 ERDS1FJ1R0 RES,C 1.0-J-1/2 R810 ERDS1FJ272 RES,C 2.7K -J-1/ 2 R812 ERDS1TJ183 RES,C 18K-J-1/2 R813 ERJ6GEYJ562 RES,M 5.6K-J- 1/10

R815 ERC12ZGM825 RES,S 8.2MEG-M-1/2 R818 ERQ12HJR56 RES,F .56-J-1/2

R820 ERJ6GEYJ273 RES,M 27K- J-1/1 0 R821 ERJ6GEYJ392 RES,M 3.9K-J- 1/10 R822 ERD50FJ474 RES,C 470K-J-1/2W R823 ERDS2TJ222 RES,C 2.2K -J-1/ 4 R824 ERG3FJ390H RES,M 39-J-3W R825 ERDS2TJ102 RES,C 1K-J-1/4

R826 ERF2AKR22 RES,W .22-K-2W

R827 ERDS1FJ561 RES,C 560-J-1/2 R828 ERG3FJ470 RES,M 47-J-3W

PARTS LIST

R829 ERQ14AJ6R8 RES,F 6.8-J-1/4 R2203 ERJ6GEYJ751 RE S,M 750-J -1/10 R2206 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R2207 ERJ6GEYJ102 RE S,M 1K- J-1/10 R2221 ERJ6GEYJ101 RE S,M 100-J -1/10 R2301 ERQ2CJP1R0 RES,F 1.0-J-2W R2305 ERD25FJ180 RES,C 18-J-1/4 R2306 ERD25FJ180 RES,C 18-J-1/4 R2307 ERJ6GEYJ221 RE S,M 220-J -1/10

REF NO. PART NO. DESCRIPTION

R2308 ERJ6GEYJ221 R ES,M 220-J-1/10 R2311 ERJ6GEYJ562 RES,M 5.6K-J-1/10 R2312 ERJ6GEYJ752 R ES,M 7.5K-J-1/10 R2313 ERJ6GEYJ332 RES,M 3.3K-J-1/10 R2318 ERJ6GEYJ682 R ES,M 6.8K-J-1/10 R2319 ERJ6GEYJ223 RES,M 22K-J-1/10 R2321 ERDS2TJ181 RES,C 180-J-1/4 R2322 ERDS2TJ181 RES,C 180-J-1/4 R2323 ERJ6GEYJ822 R ES,M 8.2K-J-1/10 R2325 ERJ6GEYJ103 RES,M 10K-J-1/10 R2329 ERJ6GEYJ751 R ES,M 750-J-1/10 R2330 ERJ6GEYJ183 RES,M 18K-J-1/10 R2332 ERJ6GEYJ751 R ES,M 750-J-1/10 R2333 ERJ6GEYJ183 RES,M 18K-J-1/10 R2334 ERJ6GEYJ472 R ES,M 4.7K-J-1/10 R2336 ERJ6GEYJ472 RES,M 4.7K-J-1/10 R2337 ERJ6GEYJ221 R ES,M 220-J-1/10 R2338 ERJ6GEYJ103 RES,M 10K-J-1/10 R2339 ERJ6GEYJ221 R ES,M 220-J-1/10 R2340 ERJ6GEYJ223 RES,M 22K-J-1/10 R2341 ERJ6GEYJ152 R ES,M 1.5K-J-1/10 R2342 ERJ6GEYJ223 RES,M 22K-J-1/10 R2343 ERJ6GEYJ152 R ES,M 1.5K-J-1/10 R2344 ERJ6GEYJ471 RES,M 470-J-1/10 R2345 ERJ6GEYJ223 RES,M 22K-J-1/10 R2346 ERJ6GEYJ471 RES,M 470-J-1/10 R2350 ERJ6GEYJ682 R ES,M 6.8K-J-1/10 R2351 ERJ6GEYJ105 RES,M 1.0MEG-J-1/10 R2352 ERJ6GEYJ105 R ES,M 1.0MEG-J-1/10 R2353 ERJ6GEYJ101 RES,M 100-J-1/10 R2355 ERJ6GEYJ682 R ES,M 6.8K-J-1/10 R2366 ERJ6GEYJ222 RES,M 2.2K-J-1/10 R2367 ERJ6GEYJ222 R ES,M 2.2K-J-1/10 R2418 ERJ6GEYJ471 RES,M 470-J-1/10 R2419 ERJ6GEYJ471 R ES,M 470-J-1/10 R3001 ERJ6GEYJ101 RES,M 100-J-1/10 R3003 ERJ6GEYJ102 RES,M 1K-J-1/10 R3004 ERJ6GEYJ102 RES,M 1K-J-1/10 R3005 ERJ6GEYJ330 R ES,M 33-J-1/10 R3006 ERJ6GEYJ750 RES,M 75-J-1/10 R3007 ERJ6GEYJ750 R ES,M 75-J-1/10 R3008 ERJ6GEYJ750 RES,M 75-J-1/10 R3009 ERJ6GEYJ750 R ES,M 75-J-1/10 R3010 ERJ6GEYJ750 RES,M 75-J-1/10 R3011 ERJ6GEYJ750 R ES,M 75-J-1/10 R3012 ERJ6GEYJ750 RES,M 75-J-1/10 R3013 ERDS2TJ331 RES,C 330-J-1/4 R3014 ERJ6GEYJ330 RES,M 33-J-1/10 R3015 ERDS2TJ102 RES,C 1K-J-1/4 R3016 ERJ6GEYJ102 RES,M 1K-J-1/10 R3017 ERJ6GEYJ330 R ES,M 33-J-1/10

Parts List

- 44 -

154-00

REPLACEMENT PARTS LIST

Models: 27GX01B-501 & 2 7GX 01B - 51 1

Important Safety Notice: Components printed in BOLD TYPE have special charact eristics important

for safety. When replacing any of these components use only manufacturer’s specified parts.

REF NO. PART NO. DESCRIPTION

R3018 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R3019 ERDS2TJ102 RES,C 1K-J-1/4 R3020 ERJ6GEYJ330 RE S,M 33-J -1/10 R6501 ERJ6GEYJ471 RE S,M 470-J -1/10 R6502 ERJ6GEYJ471 RE S,M 470-J -1/10 R6503 ERJ6GEYJ471 RE S,M 470-J -1/10 R6505 ERJ6GEYJ471 RE S,M 470-J -1/10 R6509 ERJ6GEYJ471 RE S,M 470-J -1/10 R6510 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R6511 ERJ6GEYJ123 RE S,M 12K- J-1/10 R6512 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R6513 ERJ6GEYJ152 RES,M 1.5K-J-1/10 R6515 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R6516 ERJ6GEYJ103 RE S,M 10K- J-1/10 R6518 ERJ6GEYJ333 RE S, M 33K- J-1/ 10 R6519 ERJ6GEYJ333 RE S,M 33K- J-1/10 R6520 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R6522 ERJ6GEYJ102 RE S,M 1K- J-1/10 R6523 ERJ6GEYJ562 RE S, M 5. 6K-J- 1/10 R6524 ERJ6GEYJ471 RE S,M 470-J -1/10 R6526 ERJ6GEYJ102 RE S, M 1K- J-1/ 10 R6535 ERJ6GEYJ181 RE S,M 180-J -1/10 R6537 ERJ6GEYJ392 RE S, M 3. 9K-J- 1/10 R6538 ERJ6GEYJ122 RES,M 1.2K-J-1/10 R6540 ERJ6GEYJ151 RE S,M 150-J -1/10 R6542 ERJ6GEYJ680 RE S,M 68-J -1/10 R6543 ERJ6GEYJ122 RE S, M 1. 2K-J- 1/10 R6544 ERJ6GEYJ102 RE S,M 1K- J-1/10 R6545 ERJ6GEYJ221 RE S,M 220-J -1/10 R6548 ERJ6GEYJ471 RE S,M 470-J -1/10 R6549 ERJ6GEYJ222 RE S, M 2. 2K-J- 1/10 R6553 ERJ6GEYJ101 RE S,M 100-J -1/10 R6554 ERJ6GEYJ472 RE S, M 4. 7K-J- 1/10 R6555 ERJ6GEYJ153 RE S,M 15K- J-1/10 R6556 ERJ6GEYJ333 RE S, M 33K- J-1/ 10 R6557 ERJ6GEYJ123 RE S,M 12K- J-1/10 R6558 ERJ6GEYJ103 RE S, M 10K- J-1/ 10 R6559 ERJ6GEYJ272 RES,M 2.7K-J-1/10 R6560 ERJ6GEYJ124 RE S, M 120K -J-1/ 10 R6565 ERJ6GEYJ102 RE S,M 1K- J-1/10 R6566 ERJ6GEYJ681 RE S,M 680-J -1/10 R6567 ERJ6GEYJ222 RES,M 2.2K-J-1/10 R6568 ERJ6GEYJ471 RE S,M 470-J -1/10

SWITCHES

S001 TSE2AD001 SWITCH S002 TSE2AD001 SWITCH

REF NO. PART NO. DESCRIPTION

S003 TSE2AD001 SWITCH S004 TSE2AD001 SWITCH S005 TSE2AD001 SWITCH S008 TSE2AD001 SWITCH S009 TSE2AD001 SWITCH

TRANSFORMERS

T001 TLP16297 TRAN SF O RMER, POWER SUPPLY T501 TLH15452

T502 ETE19Z30AY T551 TLF2AA002 TRANSFORMER, FLYBACK

T801 ETS29AK3L5NC TRANSFORMER, SWITCHING

X001 TSSA092 CRYSTAL OSCILLATOR X501 TSS2AA001 CRYSTAL, 3.58MHZ X601 TAFCSB503F30 CRYSTAL

M001 ETC33X82NA YOKE, CONVERGENCE

TNR001 ENG36604G TUNER

M002 HL00761 TRANSMITTER, REMOTE CTRL M003 H462271 WARRANTY CARD M004 H462472 WARRANTY CARD

M005 M68LGL061X CRT 27”

M006 TAS2AA0015 SPEAKER, 16 OHM/1.5W M007 TBM2AA0031 BADGE, HITACHI

M008 TJS2AC00301 CRT SOCKET

M009 TKX2AA00401 GUIDE, IR

DY TLY2AA006 DEFLECTION YOKE

M010 TMM2A30702 WEDGE, YOKE M011 TQB2AA0334 MANUAL, OWNERS M012 TQB2AA0335 MANUAL, OWNERS M013 TQB2AA7077 V-CHIP HITACHI NA8

M014 TSX2AA0111 AC LINE CORD

M015 TXFBX05BSER ASSY, 7-KEY BUTTON M016 TXFKU43BSER ASSY, CABINET BACK M017 TXFKU44BSER ASSY, CABINET BACK M018 TXFKY21BSER ASSY, CABINET FRONT M019 TXF3A01ZER ASSY. DAG GROUND M020 0FMK014ZZ CONVERGENCE CORRECTOR STRIP

DEG 0LK19045A COIL, DEGAUSSING 27”

M0021 2784243 BATTERY JK3001 TJB2AA0221 TERMINAL, A/V 8P JK3002 TJB2AA0045 TERMINAL, FRONT A/V JK3003 TJB2AA0171 TERMINAL, A/V JK3004 TJB2AA0211 TERMINAL, A/V 2P

TRANSFORMER, HORIZONTAL DRIVER

TRANSFORMER, HORIZONTAL COUPLING

CRYSTALS/FILTERS

OTHERS

27GX01B-501 27GX01B-511

154-00

- 45 -

PARTS LIST

Parts List

DESCRIPTION OF ABBREVIATIONS GUIDE

RESISTOR

TYPE TOLERANCE

CCarbonF +/- 1% FFuseJ +/- 5% M Metal Oxide K +/- 10% S Solid M +/- 20%

WWire WoundG +/- 2%

RES, C 270-J-1/4

CAPACITOR

TYPE TOLERANCE

C Ceramic C +/- 0.25pF E Electrolytic D +/- 0.5pF P Polyester F +/- 1pF SStyrolJ +/- 5% T Tantalum K +/- 10%

L +/- 15%

M +/- 20%

P +10% -0% Z +80% -20%

CAP, P .068UF-K-50V

- 46 -

NOTES

- 47 -

+,7$&+,

Printed in USA

V00062000ME0609

ABCDEFGH

A-Board Schematic (Left Portion)

HITACHI

Overlapping Section

See Sheet 2 Side A for Right Portion of Schematic

Side A

Sheet 1 of 2

Voltage Measurements

1. Voltage measurement:

- AC input to the Receiver is 120V. NTSC (HD, 1125i & 525P when

Boards Designation

• A-Boa rd - Mai n C ha ss is

(Left Portion)

A-Board Schematic

• C-Boa rd - CRT Dri ve

applicable) signal generator is connected to the antenna of the Receiver. (Color bar pattern of 100 IRE white and 7.5 IRE black.)

- All Pic ture and Audio adjus tments are set to Normalize. TV ANT/CABLE - (Set-Up Menu) in TV/ANT Mode Volume - Min TV/Video SW - TV position Audio Mode - Stereo

- Voltage r eadings are nominal

- Sup pl y vo lt a g es ar e nom inal.

2. Ground symbol indicates ground lead conn e cti on of meter. Incorrect ground connection will resu lt in erroneous readings.

CAUTION: Incorrect ground connection of the test equipment will result in erroneous readings.

and may vary ±10% on active devices. Some voltage reading will vary with signal strength and picture content.

1. Resistors are carbon 1/4W unless noted otherw is e.

2. Capacitors are ceramic 50V unless noted otherw is e.

3. Coil va lu e no tes i s in du ctance in µH.

4. Te st poi nt ind ic ated by ; Test point but no pin .

5. Components indicated with are critical parts and re placement sh ould be made wit h manufa cture spe cified replacement par ts only .

Sche matic Notes

6. (BOLD LINE) in dicat es the

7. The schematic diagrams are current

8. Ground symbol indicates HOT

CT-27GX 01B-501 & C T -27GX0 1B -511

route of B+ supply.

at the time of printing and are subject to change without notice.

GROUND CONNECTION; indicates COLD GROUND.

NOTE: All ot her compone nt symbols

are used for engineering design purposes.

1. indicates waveform measurement. (Measurement can be taken at the best acce ssible location in comm on to the indicate d po in t.)

2. Taken with an NTSC signal generator connected to the antenna terminal. (NTSC col or bar pa ttern of 8 bars of EIA colors, 100 IRE white and 7.5 IRE black.)

3. Customer Controls (Picture/Audio Menu) a re se t to No rmal ize. Volume is set to “MIN ”.

4. All video and color waveforms are taken with a wideband scope and a probe w ith lo w capacita nc e (10 to 1) . Shape and peak altitudes may vary depending on the type of Oscilloscope used and its settings.

Waveform Measur eme nts

5. Ground symbol shown on wavef orm number indicate s (Hot) ground lead connection of the Oscilloscope.

CAUTION: Incorrect ground connection of the test equipment will result in erroneous readings.

IMPORTANT SAFETY NOTICE

THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES THAT ARE IMPORTANT FOR PROT ECTION FRO M X-RAD IATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR THE C R I TIC AL C O MP ONE N TS D E SIG NATED WITH A IN THE SCHEMATIC.

CHIP TRANSISTOR

LEAD DESIGNATION

HGFEDCBA

A-Board Layout - TNP2AH017

C-Board Schematic

C-Board Layout - TNP2AA047

C-Board Voltage Me asur e ments

Note:

The board layouts have been modified to enhance and display traces otherwise hidden by a mask.

(Transistors)

Q351

B C E

2.41

164.50

2.25

CHIP TRANSISTOR

LEAD DESIGNATION

ote:

Voltages we re o btain ed using a digital multimeter.

Q352

2.37

169.50

2.19

Q353

2.41

164.50

2.24

HITACHI

1.0V p-p [20µs]

IC3001 PIN 36 (VIDEO)

1.1V p-p [20µs]

IC3001 PIN 32 (Y IN)

0.6 p-p [20µs]

IC3001 PIN 34 (C IN)

3.58MHz X’tal

3.7V p-p [20µs]

3.6V p-p [20µs]

(R OUT)

TP47R

(G OUT)

TP47G

(B OUT)

TP47B

Wavefor ms - A-B o ar d

4.1V p-p [5ms]

9 13

IC101 PIN 33 (VERT OUT)

1.4V p-p [5ms]

IC101 PIN 25 (DRIVE)

52.0V p-p [5ms]

IC451 PIN 2 (VERT OUT)

N/A

503KHz X’tal

IC101 PIN 41

H OSC

OSC

6.0V p-p [20µs]

IC101 PIN 35 (H OUT)

184.0V p-p [20µs]

Q501 Collector (H DRIVE)

258.0V p-p [20µs]

T551 PIN 1

24.4V p-p [20µs]

T551 PIN 6

340.0V p-p [5µs]

Q802 Collector

Boards Designation

• A-Bo ard - Ma i n Chas si s

• C-Board - CRT Drive

1. indicates waveform measurement. (Measurement can be taken at the best acce ssible location in comm on to the indicate d po in t.)

2. Taken with an NTSC signal generator connected to the antenna terminal. (NTSC color bar pattern of 8 bars of EIA colors, 100 IRE white and 7.5 IRE black.)

3. Customer Controls (Picture/Audio Menu) a re se t to No rmal ize. Volume is set to “MIN ”.

4. All video and color waveforms are taken with a wideband scope and a probe w ith low ca pa citanc e ( 1 0 to 1). Shape and peak altitudes may vary depending on the type of Oscilloscope used and its settings.

Waveform Measur eme nts

IMPORTANT SAFETY NOTICE

5. Ground symbol shown on wavef orm number indicate s (Hot) ground lead connection of the Oscilloscope.

CAUTION: Incorrect ground connection of the test equipment will result in erroneous readings.

Voltage Measurements

1. Voltage measurement:

- AC input to the Receiver is 120V. NTSC (HD, 1125i & 525P when applicable) signal generator is connected to the antenna of the Receiver. (Color bar pattern of 100 IRE white and 7.5 IRE black.)

- All Pic ture and Audio adjus tments are set to Normalize. TV ANT/CABLE - (Set-Up Menu) in TV/ANT Mode Volume - Min TV/Video SW - TV position Audio Mode - Stereo

Sche matic Notes

1. Resistors are carbon 1/4W unless noted otherw is e.

2. Capacitors are ceramic 50V unless noted otherw is e.

3. Coil va lu e no tes i s in du ctance in µH.

4. Te st poi nt ind ic ated by ; Test point but no pin .

5. Components indicated with are critical parts and re placement sh ou ld be made wit h manufa cture spe cified replacement par ts only .

- Voltage r eadings are nominal and may vary ±10% on active devices. Some voltage reading will vary with signal strength and picture content.

- Sup pl y vo lt a g es are nominal.

2. Ground symbol indicates ground lead conne ction of meter. Incorrect ground connection will result in erroneous readings.

CAUTION: Incorrect ground connection of the test equipment will result in erroneous readings.

6. (BOLD LINE) indicates the route of B+ supply.

7. The schematic diagrams are current at the time of printing and are subject to change without notice.

8. Ground symbol indicates HOT GROUND CONNECTION; indica t e s C OL D GRO U N D .

NOTE: All other compone nt symbols

are used for engineering design purposes.

Sheet 1 of 2

Side B

Board Layout, Waveforms

C-Boards Schematic

CT-27GX01B-501 & CT-27GX01B-51 1

IC101 PIN 49

3.58VCO OSC

1.0V p-p [20µs]

IC101 PIN 38 (SYNC)

27.6V p-p [5ms]

IC451 PIN 3

8.0V p-p [20µs]

IC101 PIN 34 (H SYNC)

340.0V p-p [5µs]

IC803 PIN 2

ABCDEFGH

Sheet 2 of 2

Side A

HITACHI

Overla ppin g S ect io n

A-Board Schematic (Right Portion)

A-Board Voltage Me asu rement s

(ICs and Transistors)

IC001

. . . . . . 0.00

. . . . . . 4.70

. . . . . . 4.62

. . . . . . 1.80

. . . . . . n.c

. . . . . . 3.27

. . . . . . 1.66

. . . . . . 3.27

. . . . . . 0.00

. . . . . . 3.27

. . . . . . 0.00

. . . . . . 3.27

. . . . . . 1.00

. . . . . . 0.10

. . . . . . n.c

. . . . . . 0.07

. . . . . . 3.18

. . . . . . 0.08

. . . . . . 3.27

. . . . . . 1.54

. . . . . . n.c

. . . . . .GND

. . . . . . 3.38

. . . . . . 3.36

. . . . . . 0.00

. . . . . . 6.16

. . . . . . 5.20

. . . . . . 5.22

. . . . . .GND

. . . . . . 5.79

. . . . . . n.c

. . . . . . 2.42

. . . . . . 2.40

. . . . . . 2.39

. . . . . . 8.92

. . . . . . 4.81

. . . . . . 4.66

. . . . . . 4.57

. . . . . . 2.89

. . . . . . n.c

. . . . . . 0.63

. . . . . . 5.20

. . . . . . 1.97

. . . . . . 4.36

. . . . . . 6.08

. . . . . . 8.92

. . . . . . 3.91

. . . . . . 4.63

. . . . . . n.c

. . . . . . 4.63

. . . . . . 3.58

. . . . . . 3.59

. . . . . . 4.64

. . . . . . 4.63

. . . . . . 3.58

. . . . . . 4.64

. . . . . . n.c

. . . . . . 4.63

. . . . . . n.c

See Sheet 1 Side A for Left Portion of Schematic

. . . . . . 4.73

. . . . . . n.c

IC2302

. . . . . .6.03

. . . . . .6.73

. . . . . .0.10

. . . . . .6.05

. . . . . .6.74

. . . . .18.31

. . . . .10.99

. . . . .11.24

. . . . . GND

. . . . .21.28

. . . . .11.35

. . . . .11.11

. . . . . .GND

. . . . . . 4.82

. . . . . .GND

. . . . . . n.c

. . . . . . 4.80

. . . . . . 4.70

. . . . . . n.c

. . . . . .GND

. . . . . . 2.36

. . . . . .GND

. . . . . . 2.28

22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42

IC101

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56

IC3001

19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

IC6501

15 16 17 18 19 20 21 22 23 24 25 26 27 28

. . . . . .2.06

. . . . . .2.41

. . . . . .1.36

. . . . . .1.34

. . . . . .2.40

. . . . . .2.89

. . . . . GND

. . . . . .0.07

. . . . . .0.10

. . . . . .0.11

. . . . . .0.06

. . . . . .3.27

. . . . . .3.68

. . . . . .n.c

. . . . . .3.90

. . . . . .3.27

. . . . . .1.67

. . . . . .1.68

. . . . . GND

. . . . . .3.86

. . . . . .n.c

. . . . . GND

. . . . . .n.c

. . . . . .3.93

. . . . . .1.04

. . . . . .1.76

. . . . . .n.c

. . . . . .9.58

. . . . . .3.10

. . . . . .6.84

. . . . . .8.13

. . . . . .6.56

. . . . . .4.85

. . . . . .1.15

. . . . . GND

. . . . . .1.17

. . . . . .1.42

. . . . . .n.c

. . . . . .3.83

. . . . . .3.29

. . . . . .4.86

. . . . . .2.95

. . . . . .2.98

. . . . . .3.72

. . . . . .3.06

. . . . . .n.c

. . . . . GND

. . . . . .4.15

. . . . . .n.c

. . . . . .3.36

. . . . . .3.38

. . . . . .4.01

. . . . . .4.02

. . . . . .4.01

. . . . . .3.77

. . . . . .4.00

. . . . . .4.63

. . . . . .4.64

. . . . . .4.63

. . . . . .3.98

IC801

. . . . 0.62

. . . . 0.00

. . . 12.27

IC003

. . . 154.76

. . . 150.14

. . . 152.77

. . . . . .2.63

. . . . . .3.39

. . . . . .2.25

. . . . . GND

. . . . . .n.c

. . . . . .1.43

. . . . . .0.40

. . . . . .4.86

. . . . . .0.38

. . . . . .1.15

. . . . . .1.13

. . . . . .3.52

. . . . . .0.56

IC002

. . . . . GND

. . . . . 3.84

. . . . . 3.85

. . . . . GND

. . . . . 4.84

IC005

. . . . . 4.89

. . . . . GND

. . . . . n.c

. . . . . 3.28

. . . . . GND

. . . . . 4.89

IC006

. . . . . n.c

. . . . . GND

. . . . . 3.27

IC451

. . . . . GND

. . . . 10.33

. . . . 22.34

. . . . . 2.27

. . . . . 2.26

. . . . 26.48

. . . . . 2.57

IC551

. . . . 13.70

. . . . . GND

. . . . . 8.98

IC552

. . . . . 8.59

. . . . . GND

. . . . . 4.98

IC803

. . . . 67.50

. . . 112.50

. . . 312.90

. . . 112.27

. . . 130.00

IC2201

. . . . . n.c

. . . . . 2.32

. . . . . 2.18

. . . . . 0.28

. . . . . 4.85

. . . . . 2.38

. . . . . 2.40

. . . . . 0.39

. . . . . 2.22

. . . . . 3.15

. . . . . 3.24

. . . . . 2.18

. . . . . 3.28

. . . . . 3.41

. . . . . GND

. . . . . 3.98

. . . . . 4.00

. . . . . n.c

. . . . . 2.20

. . . . . 2.18

. . . . . n.c

IC2351

. . . . . 4.40

. . . . . GND

. . . . . 4.44

. . . . . 4.43

. . . . . 4.40

. . . . . 4.41

. . . . . 4.50

. . . . . 5.50

. . . . . 4.41

. . . . . 1.46

. . . . . 4.73

. . . . . 4.77

. . . . . 5.47

. . . . . 4.45

. . . . . 4.41

. . . . . 4.39

. . . . . 4.41

. . . . . 4.43

. . . . . 4.44

. . . . . 8.92

. . . . . 4.40

Q001

B C E

ote:

Obtain Voltages using a digital multimete r.

CHIP TRANSISTOR

LEAD DESIGNATION

(Right Portion)

A-Board Schematic

Boards Designation

• A-Board - Main Chassis

• C-Board - CRT Drive

1. Voltage measurement:

- AC input to the Receiver is 120V. NTSC (HD, 1125i & 525P when applicable) signal generator is connected to the antenna of the Receiver. (Color bar pattern of 100 IRE white and 7.5 IRE black.)

- All Pic ture and Audio adjus tments are set to Normalize. TV ANT/CABLE - (Set-Up Menu) in TV/ANT Mode Volume - Min TV/Video SW - TV position Audio Mode - Stereo

Voltage Measurements

- Voltage r eadings are nominal

- Sup pl y vo lt a g es ar e nom inal.

2. Ground symbol indicates ground lead conn e cti on of meter. Incorrect ground connection will result in erroneous readings.

CAUTION: Incorrect ground connection of the test equipment will result in erroneous readings.

CT-27GX 01B-501 & C T -27GX0 1B -511

and may vary ±10% on active devices. Some voltage reading will vary with signal strength and picture content.

1. Resistors are carbon 1/4W unless noted otherwise.

2. Capacitors are ceramic 50V unless noted otherwise.

3. Coil value notes is inductance in

4. Test point indicated by ; Test point but no pin .

5. Components indicated with are critical parts and replacement should be made with manufacture specified replac em e nt parts o nl y.

THIS SCHEMATIC DIAGRAM INCORPORATES SPECIAL FEATURES THAT ARE IMPORTANT FOR PRO TECTIO N FROM X-RAD IATION, FIRE AND ELECTRICAL SHOCK HAZARDS. WHEN SERVICING IT IS ESSENTIAL THAT ONLY MANUFACTURERS SPECIFIED PARTS BE USED FOR TH E CRI TI CA L C O MPO NEN TS D ES IGNATED WITH A IN THE SCHEM ATIC.

Schematic Notes

6. (BOLD LINE) indicates the

7. The schematic diagrams are current

µH.

8. Ground symbol indicates HOT

IMPORTANT SAFETY NOTICE

route of B+ su pply.

at the time of printing and are subject to change without notice.

GROUND CONNECTION; indicates COLD GROUND.

NOTE: All other componen t symbols

are used for engineering design purposes.

1. indicates waveform measurement. (Measurement can be taken at the best accessible location in common to the in dicated point.)

2. Taken with an NTSC signal generator connected to the antenna terminal. (NTSC color ba r patter n of 8 bars of EIA colors, 100 IRE white and 7.5 IRE black.)

3. Customer Controls (Picture/Audio Menu ) are set to No rmali ze. Volume is set to “MIN”.

4. All video and color waveforms are taken with a wideband scope and a probe w i th low capacitan c e (10 to 1). Shape and peak altitudes may vary depending on the type of Oscilloscope used and its settings.

Wav eform Measurem ents

5. Ground symbol shown on waveform number indicates (Hot) ground lead connection of the Oscilloscope.

CAUTION: Incorrect ground connection of the test equipm ent will result in erroneous readings.

C E

B C E

0.71

0.13

GND

Q302

3.34

4.92

2.72

Q515

0.00

2.92

GND

Q2302

21.25 GND

16.31

Q2410

0.10

0.00

GND

Q6509

2.19

4.86

1.56

Q002

5.58

6.51

4.87

Q303

3.35

4.92

2.73

Q551

0.01

50.39 GND

Q2303

0.08

21.27 GND

Q6501

3.26

4.86

2.60

Q6510

0.42

GND

1.08

Q003

0.10

10.28 GND

Q401

3.46

5.48

2.80

Q603

1.01

4.87

0.98

Q2342

12.33

0.05

12.37

Q6502

4.02

4.86

3.35

Q6514

0.38

GND

1.05

Q004

10.20

12.26

9.51

Q402

0.62

3.46

GND

Q801

110.40

130.00

114.80 Q2343

0.10

GND

Q6504

3.23

4.86

2.59

Q6516

1.64

GND

2.26

Q005

0.63

0.30

GND

Q501

0.00

81.08 GND

Q802

118.60

112.70

116.90 Q2344

0.60

21.26 GND

Q6505

2.28

4.79

1.60

Q6517

1.43

4.86

1.64

Q201

3.37

4.87

2.72

Q509

3.24

4.81

2.56

Q804

129.90

0.53

130.33 Q2409

0.10

0.00

GND

Q6506

2.20

3.99

1.60

Q6519

1.70

3.29

0.00

Hitachi pa0138 schematic

Specifications and Main Features

Frequently Asked Questions

User Manual