Philips 29PD80, 32RF52, 32RF82, 36RF82 Schematic

IMPORTANT SAFETY NOTICE

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

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

** Hereafter throughout this manual, Philips Consumer Electronics Company will be referred to as Philips.

WARNING

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

on the schematics or exploded views. Use of substitute replacement parts which do not have the same specified safety characteristics may create shock, fire, or other hazards. Under no circumstances should the original design be modified or altered without written permission from Philips. Philips assumes no liability, express or implied, arising out of any unauthorized modification of design. Servicer assumes all liability.

* Broken Line ____ _ ____ _ ____ _ ____

FIRE AND SHOCK HAZARD

1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent component

shorts. This is especially important on those chassis which are transported to and from the service shop.

2. Never release a repaired unit unless all protective devices such as insulators, barriers, covers, strain

reliefs, and other hardware have been installed in accordance with the original design.

3. Soldering and wiring must be inspected to locate possible cold solder joints, solder splashes, sharp solder

points, frayed leads, pinched leads, or damaged insulation (including the ac cord). Be certain to remove loose solder balls and all other loose foreign particles.

4. Check across-the-line components and other components for physical evidence of damage or

deterioration and replace if necessary. Follow original layout, lead length, and dress.

5. No lead or component should touch a receiving tube or a resistor rated at 1 watt or more. Lead tension

around protruding metal surfaces or edges must be avoided.

6. Critical components having special safety characteristics are identified with an 'S' by the Ref. No. in the

parts list and enclosed within a broken line* (where several critical components are grouped in one area) along with the safety symbol on the schematic diagrams and /or exploded views.

7. When servicing any unit, always use a separate isolation transformer for the chassis. Failure to use a

separate isolation transformer may expose you to possible shock hazard, and may cause damage to servicing instruments.

8. Many electronic products use a polarized ac line cord (one wide pin on the plug). Defeating this safety

feature may create a potential hazard to the servicer and the user. Extension cords which do not incorporate the polarizing feature should never be used.

9. After reassembly of the unit, always perform an ac leakage test or resistance test from the line cord to all

exposed metal parts of the cabinet. Also, check all metal control shafts (with knobs removed), antenna terminals, handles, screws, etc., to be sure the unit may be safely operated without danger of electrical shock.

* Broken line ____ _ ____ _ ____ _ ____

LEAKAGE CURRENT COLD CHECK

1. Unplug the ac line cord and connect a jumper between the two prongs of the plug.

2. Turn on the power switch.

3. Measure the resistance value between the jumpered ac plug and all exposed cabinet parts of the receiver,

such as screw heads, antennas, and control shafts. When the exposed metallic part has a return path to the chassis, the reading should be between 1 megohm and 5.2 megohms. When the exposed metal does not have a return path to the chassis, the reading must be infinity. Remove the jumper from the ac line cord.

LEAKAGE CURRENT HOT CHECK

1. Do not use an isolation transformer for this test. Plug the completely reassembled receiver directly into

the ac outlet.

2. Connect a 1.5k, 10W resistor paralleled by a 0.15uF. capacitor between each exposed metallic cabinet

part and a good earth ground such as a water pipe, as shown below.

3. Use an ac voltmeter with at least 5000 ohms/volt sensitivity to measure the potential across the resistor.

4. The potential at any point should not exceed 0.75 volts. A leakage current tester may be used to make

this test; leakage current must not exceed 0.5mA. If a measurement is outside of the specified limits, there is a possibility of shock hazard. The receiver should be repaired and rechecked before returning it to the customer.

5. Repeat the above procedure with the ac plug reversed. (Note: An ac adapter is necessary when a

polarized plug is used. Do not defeat the polarizing feature of the plug.)

With the instrument completely reassembled, plug the ac line cord directly into a 120Vac outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument ac switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5mA. Reverse the instrument power cord plug in the outlet and repeat the test. See the graphic below.

TV SAFETY NOTES

SAFETY CHECKS

After the original service problem has been corrected, a complete safety check should be made. Be sure to check over the entire set, not just the areas where you have worked. Some previous servicer may have left an unsafe condition, which could be unknowingly passed on to your customer. Be sure to check all of the following:

Fire and Shock Hazard Implosion X-Radiation Leakage Current Cold Check Leakage Current Hot Check Picture Tube Replacement Parts Replacement

WARNING: Before removing the CRT anode cap, turn the unit OFF and short the HIGH VOLTAGE to the CRT DAG ground.

SERVICE NOTE: The CRT DAG is not at chassis ground.

IMPLOSION

1. All picture tubes used in current model receivers are equipped with an integral implosion system. Care should always be used, and safety glasses worn, whenever handling any picture tube. Avoid scratching or otherwise damaging the picture tube during installation.

2. Use only replacement tubes specified by the manufacturer.

X-RADIATION

1. Be sure procedures and instructions to all your service personnel cover the subject of X-radiation. Potential sources of X-rays in TV receivers are the picture tube and the high voltage circuits. The basic precaution which must be exercised is to keep the high voltage at the factory recommended level.

2. To avoid possible exposure to X-radiation and electrical shock, only the manufacturer's specified anode connectors must be used.

3. It is essential that the service technician has an accurate HV meter available at all times. The calibration of this meter should be checked periodically against a reference standard.

4. When the HV circuitry is operating properly there is no possibility of an X-radiation problem. High voltage should always be kept at the manufacturer's rated value - no higher - for optimum performance. Every time a color set is serviced, the brightness should be run up and down while monitoring the HV with a meter to be certain that the HV is regulated correctly and does not exceed the specified value. We suggest that you and your technicians review test procedures so that HV and HV regulation are always checked as a standard servicing procedure, and the reason for this prudent routine is clearly understood by everyone. It is important to use an accurate and reliable HV meter. It is recommended that the HV reading be recorded on each customer's invoice, which will demonstrate a proper concern for the customer's safety.

5. When troubleshooting and making test measurements in a receiver with a problem of excessive high voltage, reduce the line voltage by means of a Variac to bring the HV into acceptable limits while troubleshooting. Do not operate the chassis longer than necessary to locate the cause of the excessive HV.

6. New picture tubes are specifically designed to withstand higher operating voltages without creating undesirable X-radiation. It is strongly recommended that any shop test fixture which is to be used with the new higher voltage chassis be equipped with one of the new type tubes designed for this service. Addition of a permanently connected HV meter to the shop test fixture is advisable. The CRT types used in these new sets should never be replaced with any other types, as this may result in excessive X-radiation.

7. It is essential to use the specified picture tube to avoid a possible X-radiation problem.

8. Most TV receivers contain some type of emergency "Hold Down" circuit to prevent HV from rising to excessive levels in the presence of a failure mode. These various circuits should be understood by all technicians servicing them, especially since many hold down circuits are inoperative as long as the receiver performs normally.

PICTURE TUBE REPLACEMENT

The primary source of X-radiation in this television receiver is the picture tube. The picture tube utilized in this chassis is specially constructed to limit X-radiation emissions. For continued Xradiation protection, the replacement tube must be the same type as the original, including suffix letter, or a Philips approved type.

PARTS REPLACEMENT

Many electrical and mechanical parts in Philips television sets have special safety related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. The use of a substitute part which does not have the same safety characteristics as the Philips recommended replacement part shown in this service manual may create shock, fire, or other hazards.

PRODUCT SAFETY GUIDELINES FOR ALL PRODUCTS

CAUTION: Do not modify any circuit. Service work should be performed only after you are thoroughly familiar with all of the following safety checks. Risk of potential hazards and injury to the user increases if safety checks are not adhered to.

USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING.

PREVENTION OF ELECTROSTATIC DISCHARGE (ESD)

Some semiconductor solid state devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices, Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor "chip" components. The following techniques should be used to help reduce the incidence of component damage caused by electrostatic discharge (ESD).

1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test.

2. After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.

3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.

4. Use only an anti-static solder removal device. Some solder removal devices not classified as "antistatic (ESD protected)" can generate an electrical charge sufficient to damage ES devices.

5. Do not use Freon propelled chemicals. These can generate electrical charges sufficient to damage ES devices.

6. Do not remove a replacement ES device from its protective package until immediately before you are ready to install it (most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil or comparable conductive material).

7. Immediately before removing the protective material from the leads of a replacement ES device, touch the protective material to the chassis or circuit assembly into which the device will be installed.

CAUTION: Be sure no power is applied to the chassis or circuit and observe all other safety precautions.

8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the brushing together of your clothes fabric or the lifting of your feet from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device.)

NOTE to CATV system Installer:

This reminder is provided to call the CATV system installer's attention to article 820-22 of the NEC that provides guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.

PRACTICAL SERVICE PRECAUTIONS

IT MAKES SENSE TO AVOID EXPOSURE TO ELECTRICAL SHOCK. While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

ALWAYS RESPECT VOLTAGES. While some may not be dangerous in themselves, they can cause unexpected reactions – reactions that are best avoided. Before reaching into the powered color TV set, it is best to test the high voltage insulation. It is easy to do, and is just a good service precaution.

BEFORE POWERING UP THE TV WITH THE BACK OFF (or on a test fixture), attach a clip lead to the CRT DAG ground and to a screwdriver blade that has a well insulated handle. After the TV is powered on and high voltage has developed, probe the anode lead with the blade, starting at the bottom of the High Voltage Transformer (flyback – IFT). Move the blade to within two inches of the connector of the CRT. IF THERE IS AN ARC, YOU FOUND IT THE EASY WAY, WITHOUT GETTING A SHOCK! If there is an arc to the screwdriver blade, replace the High Voltage Transformer or the lead, (if removable) whichever is causing the problem.

PICTURE TUBE REPLACEMENT PROCEDURE

Note: a. Two (2) people are required to handle this picture tube. b. Safety Glasses must be worn during this procedure or whenever directly handling a picture tube. c. Take care in each step not to damage the CRT or the cabinet.

1. Remove the Chassis and the CRT Socket Board Module from the cabinet.

2. A furniture pad or blanket should be positioned on the floor to support only the CRT Face. This pad or blanket should be high enough to keep the CRT Face approximately 12 to 14 inches off the floor.

3. Using two people, place the cabinet in a front down position with the CRT Face on the pad or blanket.

4. Place padded blocks under each corner of the cabinet to keep it from rocking.

5. Remove the four screws, at the corners of the CRT.

6. With two people lowering the cabinet to the floor, leave the CRT elevated by the pad or blanket.

Note: Take care not to grasp the neck of the CRT during this procedure, as it is extremely fragile.

7. Two (2) people may then lift the CRT from the cabinet.

8. Remove the degaussing coil from the defective CRT and mount on the replacement. Take care to maintain the exact shape and fit.

To install the new CRT, reverse steps 1 to 7.

GENERAL INFORMATION

Manual: 7623 Models Covered In the First Release:

29PD80, 32RF52, 32RF82, & 36RF82

Q8 Chassis (Some Models include the ASD-1 DVD Player) Refer to Manual 2027 for detailed information on the ASD-1 Player.

All the models covered within this manual feature Real Flat Picture Tube Technology along with Active Control that provides continuous analysis of incoming signal and optimization of picture color.

In addition, certain models may also include a DVD player as well as S-Video and A/V Source Inputs. 2-Tuner PIP is also available on certain models.

Refer to the Panel Location Guide below to familiarize yourself with the various optional panels that may be present on any given model:

Included here a Specification Sheet for Model 32RF52. For Specification Information on other models as well as Owner’s Manuals (for detailed operation), refer to the following Web site:

http://www.p4c.philips.com/

32RF52 Specification Sheet

Mechanical Disassembly

Rear Cover Removal & Replacement

Refer to Exploded View

Removal of the Rear Cover

1. Remove all screws from the rear cover.

2. Remove the rear cover.

Replacement of the Rear Cover

Before replacing the Rear Cover, perform the following inspection:

• Ensure that AC Cord is placed correctly in the guide brackets.

• Ensure that all cables are placed in their original position.

Service Positions:

The following CBAs are present in this chassis (see also 'Chassis overview', CBA Location Diagram):

1. Main Chassis

2. SSB Panel

3. Top Control panel

4. CRT panel (or PTP)

5. Side I/O panel

6. PIP-panel

7. Mains Switch/LED panel

8. M-Link

Service Position 1 for the Large Signal Board (LSB)

Position 1: The following service position will provide the best accessibility to the Top Side of the Large Signal

Panel:

1. Remove the LSB bracket from the bottom tray by sliding the bracket backward and then pull the bracket up and out of the bottom tray.

2. Place the Hooks (A) of the bracket in the first row of fixation holes of the cabinet bottom. In other words reposition the bracket hooks from position (1) to position (2).

Service position for the Small Signal Board (SSB)

There is no predefined service position for the bottom (B) of the SSB. If IC's must be replaced take the complete panel out of the SIMM connector.

1. Put the Large Signal Board in service position 1 (as described above).

2. Release the 2 metal clamps at either side of the SIMM connector for removal.

NOTE: The SSB “hinges” in its connector.

Note: Regarding this procedure as well as the following panels, it may be necessary to refer to either of the

following detailed views:

Chassis Overview Exploded View

Access to the Top Control Panel

1. Remove the two screws that hold the panel to the cabinet back.

2. Slide the board backward (release it from the front hinge).

3. The board can easily be lifted out of the bracket after releasing the two clamps on the connector side.

Access to the Side I/O Panel

1. Remove the two screws.

2. Remove the complete Side I/O-assembly.

3. Release the two clamps then lift the board out of the bracket.

Access to the M-Link

1. Release the two clamps at both sides and remove the board from the bracket.

Access to the DAF panel

1. Release the clamps (1) and remove the board (2) from the bracket.

DAF Panel Detail

Q8 CHASSIS ADJUSTMENTS Electrical Adjustments

Conditions

All electrical adjustments should be performed under the following conditions:

• Supply voltage : 120V +/- ( 10%)

• Warm-up time: 10 minutes

• The voltages and oscilloscope waveforms are measured in relation to the tuner ground.

• Test probe: Ri > 10Meg Ohm; Ci < 2.5 pF.

Panel Location Guide

Service Alignment Mode (SAM)

Introduction

The Service Alignment Mode (SAM) is used to align the set and/or adjust the option settings and to display/clear the error code buffer values.

Entering Service Alignment Mode

To enter the Service Alignment Mode (SAM), press the following key sequence on the remote control transmitter:

0-6-2-5-9-6-Index

Do not allow the display to time out between entries while keying the sequence It is also possible to enter the Service Alignment Mode by pressing the “VOLUME +” and “VOLUME -” key on the local keyboard simultaneously when the set is in SDM

Exiting Service Alignment Mode (SAM):

To exit the Service Alignment Mode, press the Power button.

Note: To save the error codes, unplug the AC power cord without turning off the set. When the power

is turned back on, the Service Alignment Mode will still be active.

In the SAM the following information is displayed on the screen:

Service Alignment Mode screen and structure

Explanation notes/references:

1 Operation Hours (Run Timer):

This display indicates the accumulated total of operational hours. (Shown in hexadecimal format)

2 Software identification of the main micro controller (AK21US1-4.30)

AK21 is the engineering chassis name for the Q8 chassis

• US1 is 2 letter and 1 digit combination to indicate the software type and the supported languages:

• US = USA

• 1 = Main Software language version number

• 4.30 = sub-version number

3 Error buffer (7 errors possible) Displays the 7 most recent errors. The most recent

error is displayed at the upper left.

4 Option bytes (8 codes possible), summary of options are explained below. 5 Sub menus are listed in a scroll-menu.

SAM Menu Control

Menu items may be selected using the cursor UP/DOWN key.

• The selected item will be highlighted.

• When not all menu items will fit on the screen, pressing the cursor UP/DOWN key on the remote transmitter

will display the next/previous menu items.

With the cursor LEFT/RIGHT keys, it is possible to:

• (de)activate the selected menu item (e.g. GEOMETRY)

• change the value of the selected menu item ( e.g. VER-SLOPE )

• activate the selected submenu (e.g. SERV-BLK)

Access to normal user menu

Pressing the “MENU” button on the remote control switches between the SDM and the normal user menus

(with the SAM mode still active in the background). Pressing the “MENU” key in a submenu will return the screen to the previous menu.

Software Alignment (Service Alignment Mode: SAM)

With the software alignments of the Service Alignment Mode, the geometry, white tone and tuner (IF) can be aligned.

Tuner Options

Enter the Service Alignment Mode (SAM) by pressing the following key sequence on the remote control transmitter: 0-6-2-5-9-6-INDEX Do not allow the display to time out between entries while keying the sequence It is also possible to enter the Service Alignment Mode by pressing the “VOLUME +” and “VOLUME -” key on the local keyboard simultaneously for at least 4 seconds when the set is in SDM.

The option menu below shows the default values as set by the PEMG for US clusters:

Item 2US1 Remarks

IF-PLL OFFSET AGC AFA AFB AKB VSD

P P P P P P

Range 0->127 (Typically 31) Range 0->63 (Typically 17) 0 or 1 (Read Only) 0 or 1 (Read Only) ON Vertical Setup (OFF) Except to display vertical line

White Tone Adjustment

Enter SAM (see Software alignments (Service Alignment Mode)). Press the Cursor Down button to highlight the WHITE TONE menu item. Press the Cursor Right button to enter the WHITE TONE submenu. In the white tone submenu the values for the color temperature values can be adjusted. The color can be selected with the Cursor Up/Down buttons. The value can be changed with the Cursor Left/Right buttons. First the values for the NORMAL color temperature should be selected. Then the offset values for the DELTA COOL and DELTA WARM mode can be selected. Note that the alignment values are non-linear 0 represents the middle value (no offset difference).

SAM REGISTER NAME DEFAULT VALUE

GEOMETRY VER. AMPL 12

VER. SLOPE 33 SERV BLANK OFF HOR SHIFT 29 HOR. BOW 30 HOR. PARALLEL 31 EW. WIDTH 42 EW. PARA 24 EW. TRAP 21 EW. UCORN 10 EW. LCORN 33 H60 WIDTH 8

H60 SHIFT 6 V60 AMPL 5 VER SCOR 13

H60 PARA 2

VER. SHIFT 36 VER ZOOM 26 VER SCROLL 33

PICTURE BRIGHTNESS 31

PICTURE 31 COLOR 31 TINT 31 SHARPNESS 31 SUB-BRIGHT 31

WHITE TONE NORMAL RED 32

NORMAL GREEN 30 NORMAL BLUE 29 DELTA COOL RED 0 DELTA COOL GREEN 2 DELTA COOL BLUE 9 DELTA WARM RED 0 DELTA WARM GREEN -6 DELTA WARM BLUE -18 CATHODE DR 9

Geometry Adjustment

The geometry alignments menu contains 13 items for correct picture geometry alignment. In widescreen models, the GEOMETRY SW is available for separate alignments of the super-wide (panorama) mode. The geometry alignments are:

Initial set-up:

• Press the PICTURE button on the remote control repeatedly to change the Smart Picture setting to "SPORTS."

• Enter SAM (see Software alignments (Service Alignment Mode)).

• Press the Menu Down button to select the GEOMETRY menu item.

• Press the Cursor Right button to enter the GEOMETRY submenu.

• Press the Cursor Down button to highlight the VER-SCOR submenu item.

• Use the Cursor Right buttons to adjust VER-SCOR to 13 for 27”, 28”, 32” and 34” picture tubes.

• Use the Cursor Right buttons to adjust VER-SCOR to 23 for 29” RF- sets

• Vertical zoom should be set at a default value of 35.

• Vertical scroll should be set at a default value of 32.

VER-SCOR aligns the vertical linearity, so that the vertical intervals of the grid-patterns are the same over the

entire height of the screen.

Extra Alignment

• Set Service blanking on SERV-BLK ON

• Adjust Vertical slope VER-SLOPE xx

• Set Service blanking OFF SERV-BLK OFF

General Alignment

• Adjust Vertical amplitude VER-AMPL xx

• Adjust Vertical shift VER-SHIFT xx

• Adjust Horizontal shift HOR-SHIFT xx

• Adjust Vertical height VER-ZOOM xx

• Adjust Vertical position VER-SCROLL xx

• Adjust Vertical linearity VER-SCOR xx

• Not used H60-SHIFT xx

• Not used V60-AMPL xx

• Adjust Horizontal width EW-WIDTH xx

• Adjust Parabola EW-PARA xx

• Adjust Up corner EW-UCORN xx

• Adjust low corner EW-LCORN xx

• Adjust Trapezium EW-TRAP xx

• Adjust Horizontal parallelogram HOR-PARALLEL xx

• Adjust Horizontal bow HOR-BOW xx

Geometry Submenu Item Descriptions

SERV-BLK: - To turn on/off the blanking of the lower half of the screen (To be used in combination with the

vertical slope alignment)

VER-SLOPE - To adjust the picture so the proportions are the same at the top and bottom of the screen.

(This alignment must be performed first, before all other vertical alignments)

VER-AMPL - To align the picture height (other vertical alignments are NOT compensated) VERSHIFT - To align the vertical center of the picture to the vertical center of the CRT HORSHIFT - To align the horizontal center of the picture to the horizontal center of the CRT VER-ZOOM - To adjust picture height VER-SCROLL - To vertically align the raster VER-SCOR - To adjust the vertical linearity of the picture H60-SHIFT - Not used V60-AMPL - Not used EW-WIDTH - To align the picture width (*) EW PARA - To align straight vertical lines at the sides of the screen (*) EW-UCORN - To align straight vertical lines in the upper corners of the screen (*) EW-LCORN - To align straight vertical lines in the lower corners of the screen (*) EW TRAP - To align straight vertical lines at the middle of the screen (*) HOR-PARALLEL - To align straight vertical lines at the top and at the bottom of the screen; vertical rotation

around the center (*)

HOR-BOW - To align straight horizontal lines at the top and the bottom of the screen; horizontal rotation

around the center

Alignments indicated with (*) are not applicable for sets without East/West circuitry

Smart Settings

Item

MOVIE BGT P Movie Brightness 0-99 34 MOVIE COL P Movie Color 0-99 34 MOVIE PIC P Movie Picture 0-99 75 MOVIE SHP P Movie Sharpness 0-99 50 MOVIE HUE P Movie Hue 0-99 50 SPORT BGT P Sport Brightness 0-99 34 SPORT COL P Sport Color 0-99 34 SPORT PIC P Sport Picture 0-99 67 SPORT SHP P Sport Sharpness 0-99 45 SPORT HUE P Sport Hue 0-99 50 WEAK BGT P Weak Brightness 0-99 34 WEAK COL P Weak Color 0-99 32 WEAK PIC P Weak Picture 0-99 59 WEAK SHP P Weak Sharpness 0-99 30 WEAK HUE P Weak Hue 0-99 50 MULTI BGT P Multimedia Brightness 0-99 34 MULTI COL P Multimedia Color 0-99 34 MULTI PIC P Multimedia Picture 0-99 71 MULTI SHP P Multimedia Sharpness 0-99 40 MULTI HUE P Multimedia Hue 0-99 50

2US1

Remarks

Typical

Settings

Active Control

Item 2US1

VSG P MOVIE SHP 0-99 60 VSG P SPORT SHP 0-99 70 VSG P WEAK SHP 0-99 40 VSG P MULTI SHP 0-99 75 VSG P PSNL SHP 0-99 70 SG P MOVIE SHP 0-99 50 SG P SPORT SHP 0-99 50 SG P WEAK SHP 0-99 25 SG P MULTI SHP 0-99 70 SG P PSNL SHP 0-99 50 NM P MOVIE SHP 0-99 45 NM P SPORT SHP 0-99 35 NM P WEAK SHP 0-99 15 NM P MULTI SHP 0-99 55 NM P PSNL SHP 0-99 35 WK P MOVIE SHP 0-99 20 WK P SPORT SHP 0-99 20 WK P WEAK SHP 0-99 5 WK P MULTI SHP 0-99 40 WK P PSNL SHP 0-99 20 VWK P MOVIE SHP 0-99 0 VWK P SPORT SHP 0-99 2 VWK P WEAK SHP 0-99 0 VWK P MULTI SHP 0-99 4 VWK P PSNL SHP 0-99 0

Remarks

Typical

Settings

Options/Features

Options are used to control the presence / absence of certain features and hardware. There are two ways to change the option settings, see Service Alignments Mode screens and structure.

Service Alignment Mode screen and structure

Changing a single option

An option may be selected with the MENU UP/DOWN keys and then changed with the MENU LEFT/RIGHT keys.

Changing multiple options by changing option byte values

Option bytes make it possible to set all options quickly. An option byte, right hand column, represents the total number of the option values within that group. All options of the Q8 can be controlled via the eight option bytes. Select the option byte (OB1, OB2, OB3, OB4, OB5, OB6, OB7 or OB8) and enter the value given under Option Bytes. This will automatically set all option byte values to the correct value.

List of options

Unless otherwise stated ON means the option is turned on or present, OFF means the option is turned off or not present

Option Codes - NAFTA

Abbreviation Features Default values Option Byte

Value

SBNP Auto standby with no picture ON 128 1 OB1 = 251 C169 Picture setting for compress ON 64 1 E149 Picture setting for expand ON 32 1 SMCK Smart Clock ON 16 1 CBFL Comb filter ON 8 1 IPIX Incredible Picture OFF 4 0 IPMU Incredible Picture via menu ON 2 1 PLST Program List ON 1 1

SOSD Smart OSD ON 128 1 OB2 = 223 BLMU Blue Mute ON 64 1 VSLC Vertical slicing OFF 32 0 SURF Surf ON 16 1 CCAP Close Caption ON 8 1 DNRM Digital Noise Reduction in Menu VMUT Video Mute ON 2 1 TIME TIMER ON 1 1

AAVL Automatic Volume Level ON 128 1 OB3 = 186 FUNN Fine Tuning OFF 64 0 SPKC Speaker Control ON 32 1 VCBK VChip Block un-rated ON 16 1 VBNR VChip Block No Rating ON 8 1 USRC US Backup Remote From MLink BNUM Numbering for the Sliders ON 2 1 ROTI Picture Rotation OFF 1 0

SNIC ON=MSP3451OFF=3435/3415 OFF 128 0 OB4 = 62 TMWIN Time Window OFF 64 0 AOUT Audio OUT ON 32 1 INCF Selection color delay line ON 16 1 APC Auto Picture Control ON 8 1 NVM Non Volatile Memory ON 4 1 HIST Histogram ON 2 1

--- --- OFF 1 0

--- --- OFF 0 OB5 = 0

--- ---

ON 4 1

OFF 4 0

OFF OFF OFF

0 OB6 = 0 0 OB7 = 0 0 OB8 = 0

Bits Option

Bytes

Option Bytes

OPTION BYTE OB 1 OB 2 OB 3 OB 4 OB 5 OB 6 OB 7 OB 8

MODEL

29PD80 2225 251 223 250 56 0 0 0 0 29PD80 2235 251 223 186 56 0 0 0 0 32RF52 S327 254 184 126 236 208 0 0 0 32RF82 S327 254 190 253 217 224 0 0 0 36RF82 S327 254 190 253 217 224 0 0 0

Service Modes & Error Messages

The following topics are covered:

• Test points

• Service Modes and Dealer Service Tool (DST)

• Error code buffer and error codes

• The “blinking LED” procedure

• Trouble shooting tips

• Customer Service Mode

Test points

The Q8 chassis is equipped with test points shown on the CBA and the schematic diagrams. Each test point has a reference number indicating the functional block in which it is located.

• A1-A2-A3, etc.: Test points for the audio processing circuitry [A6, C6]

• C1-C2-C3, etc.: Test points for the control circuitry [C8]

• F1-F2-F3, etc.: Test points for the frame drive and frame output circuitry [A3]

• I1-I2-I3, etc.: Test points for the Intermediate Frequency Circuitry [A4, C1]

• K1-K2-K3, etc: Test points for the Guide+ panel

• L1-L2-L3, etc.: Test points for the line drive and line output circuitry [A2] and PIP-panel

• P1-P2-P3, etc.: Test points for the power supply [A1]

• S1, S2, S3, etc.: Test points for the synchronization circuitry [C1]

• V1-V2-V3, etc.: Test points for the video processing circuitry [B, C2, C3]

Measurements should be performed under the following conditions: Video: NTSC color bar signal Audio: 3kHz left, 1kHz right

Service Default Mode (SDM)

Introduction

The Service Default Mode (SDM) is a technical aid for the service technician. The Service Default Mode (SDM) establishes fixed, repeatable settings of customer controls, which allow consistent measurements to be made. The SDM also initiates the blinking LED procedure and, if necessary, overrides the 5V protection.

The SDM places the set in the following pre-defined conditions:

• Tuning frequency set to 61.25 MHz (channel 3).

• Volume level set to 25% (of the maximum volume level).

• Other picture and sound settings set to 50% (mid-range)

The following functions are turned off in SDM (and after leaving SDM):

• Timer

• Sleep timer

The following functions are disabled during SDM (and enabled after leaving SDM):

• Parental lock

• Blue mute

• Hospitality Mode

• No-ident Timer (normally the set is automatically switched off when no video signal (IDENT) was received

for 15 minutes).

All other controls operate normally.

Entering Service Default Mode

To enter the Service Default Mode, press the following key sequence on the remote control transmitter: 0-6-2-5-9-6-Menu

Do not allow the display to time out between entries while keying the sequence. Upon entry into the Service Default Mode, the letters “SDM” will be displayed at the upper right corner of the

screen.

SDM Screen Structure

Special SDM functions

Access to normal user menu

Pressing the “MENU” button on the remote control switches between the SDM and the normal user menus

(with the SDM mode still active in the background)

Auto Program

Press the Cursor Down button and highlight the "Install" menu item. Press the Cursor Right button to

highlight the "Language " menu item. Press the Cursor Down button until the "Auto Program" menu item is highlighted. Press the Cursor Right button to activate Auto Program.

Auto programming is indicated by a blinking LED; the LED will discontinue blinking when a transmitter is

located.

Error buffer

To show/hide the error buffer press the “Status/Exit” button on the remote control. The error buffer

information can be hidden to prevent interference with oscilloscope measurements.

Access to SAM

To access the Service Alignment Mode while in the SDM press the “VOLUME +” and “VOLUME –“ buttons

on the local keyboard simultaneously.

Exiting Service Default Mode

To exit the Service Default Mode, press the Power button.

Note: To save the error codes, unplug the AC power cord without turning off the set. When the power is turned back on, the Service Default Mode will still be active.

CLEAR ERRORS

Erasing the contents of the error buffer. Select the CLEAR ERRORS menu item and press the MENU RIGHT

key. The content of the error buffer is cleared.

The functionality of the OPTIONS and ALIGNMENTS (TUNER, WHITE TONE, GEOMETRY and SMART

SETTING) sub menus is described in the service adjustments.

Error code buffer and error codes:

Explanation of the Error code buffer

The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is

written from left to right. When an error occurs that is not yet in the error code buffer, the error code will appear at the left side and all other errors shift one position to the right.

The error code buffer will be cleared in the following cases:

• by activating CLEAR ERRORS in SAM menu

• exiting SDM or SAM with the “Standby" command on the remote control

• upon automatic reset when content has not changed for 50 consecutive hours

By leaving SDM or SAM via the power switch, the error buffer will not be reset.

Examples: ERROR: 0 0 0 0 0 0 0 : No errors detected ERROR: 6 0 0 0 0 0 0 : Error code 6 is the last and only detected error ERROR: 9 6 0 0 0 0 0 : Error code 6 was first detected and error code 9 is the last detected (newest) error

The contents of the error buffer can also be displayed by use of the “blinking LED” procedure, if no picture is

available. See explanation of “The blinking LED procedure “below.

Error code definition

In case of non-intermittent faults, clear the error buffer before starting the repair, to make sure “old” error codes are not present. If possible check the entire content of the error buffers. In some situations an error code is only the result of another error code (and not the actual cause).

Note: a fault in the protection detection circuitry can also lead to a protection. Error 0 = No error Error 1 = X-ray protection, E/W protection and/or Beam

X-ray protection, E/W protection and/or Beam; set is switched to protection; error code 1 is placed in the error buffer; the LED will blink 1 time (repeatedly). If this happens, isolate each circuit to determine the cause. These circuits are:

• x-ray protection – PROTN

If this protection is active, the most likely cause is the LOT. Detection via pin 3 of the signal processor – item

7301.

• EW protection – PROT-UP

If this protection is active, the causes could be one of the following:

• bad contacts of:

- horizontal deflection coil

- linearity coil 5417

- S-correction capacitor 2418/2419

- flyback capacitor 2414/2416

- line output stage

• short circuit of:

- flyback diode 6414

- EW transformer (bridge coil) 5478/5479 or 5474/5475/5476 (item number depends upon the model version)

- EW driver 7470

• High beam current protection - Beam

As the name implies, what causes this protection is a high beam current (bright screen with flyback lines)

which is too high. Check for the presence of the +200V supply to the CRT panel. If the voltage is present, the most likely cause is the CRT panel or the picture tube. Disconnect the CRT panel to determine the cause. If the +200V voltage is not present, check R3840 at CRT-panel and R3445 & D6445 on the main chassis.

Error 2 = Vertical protection - VFB If this protection is active, the cause could be one of the following (most likely in the vertical output stage):

- 7501 is faulty

- poor contact or open circuit of deflection coil

- +13V-VERT and/or -13V not present

Error 3 = Reserved

Error 4 = +5V protection

5V protection active; set is switched to protection; error code 4 is placed in the error buffer; the LED will blink 4 times (repeatedly). A 5V failure can cause a drop in the 5V-supply output, resulting in an undefined behavior of

the set. Therefore, all I2C devices connected to the 5V supply are constantly monitored. When none of these devices responds to the micro controller for a prolonged time, the micro controller assumes that there is a failure in the 5V supply.

By starting up the set with the service jumpers shorted, the 5V protection is disabled and it is easier to determine the cause. +5V protection will be activated when these I2C devices fail (no I2C communication):

• Main Tuner – 1125 on main panel

• ITT sound processor – MSP34xx (7064) on the SSB

The following tips are useful to isolate the problem area after overriding the +5V protection. Determine whether:

• The +5V source is working properly; isolate coil 5430 and jumper 9044 and measure the +5V

• ITT sound processor circuit is loading the +5V; isolate coil 5430

• The tuner is loading the +5V source; isolate jumper 9044

• Main tuner circuit is loading the +5V source; isolate coil 5261

Caution! Overriding the 5V protection when there is a 5V failure can increase the temperature in the set and

may cause permanent damage to components. Do not override the 5V protection for a prolonged period of time.

Error 5 = Reserved

Error 6 = General I2C error. This error code will be displayed in the following cases:

• SCL or SDA is shorted to ground

• SCL is shorted to SDA

• SDA or SCL connection at the micro controller is open circuit.

Error 7 = BC-loop not stabilized (BCF = 1) Black current loop instability protection. The possible cause could

be a defect in one or more of the RGB amplifiers, RGB guns or RGB driving signals.

Error 8 = BOCMA (signal processor) IC – TDA888xx I2C communication failure. BOCMA (item 7301 on SSB)

is corrupted or the I2C line to the BOCMA is low or no supply voltage present at pin 14 and/or pin 60 (3V3)

Error 9 = BOCMA (signal processor) IC – TDA888xx 8V failure (SUP bit). No supply voltage at pin 53. Check

NFR 3331 and coil 5333.

Error 10 = Non Volatile Memory I2C error. NV memory (EEPROM – item 7066) does not respond to the micro

controller.

Error 11 = Micro controller / NV Memory identification error. During the last start-up the NVM and the micro

controller did not recognize each other (e.g. one of them was replaced or the NVM memory has been changed/adapted or lost), therefore the NVM was loaded with default values.

Error 12 = Microprocessor (Painter – item 7064) internal RAM test failure.

Error 13 = Main Tuner I2C failure UV13xx. Tuner (item 1225) is corrupted or the I2C line to the Tuner is low or

not supplying voltage at pin 9, pin 6 or pin 7 of the tuner.

Error 14 = Sound processor I2C error (MSP34xx -). Sound controller MSP3400 or MSP3410 does not respond

to the micro controller.

Error 15 = SRAM (Static Random Access Memory) IC uPD431000A-B test failure (item – 7070).

Error 16 = PIP/DW Tuner I2C error. The Tuner (TEDE9 – item 1900) on the PIP-panel does not respond to the

micro controller.

Error 17 = PIP IC – M65669SP I2C failure (item 7803) or Double Window IC SAB9081 I2C failure.

Error 18 = I/O expander IC – 62320P I2C failure (item 7910 on PIP panel).

Error 19 = Guide+ I2C failure (LC27016B – item 7005).

Error 20 = V-chip for PIP, IC ZILOG 86130 I2C failure.

Error 21 = NV clock IC MK41T56 I2C failure at mono board – Item 7011 at A7. (Latam only) Error 22 = Reserved.

Error 23 = Second BOCMA IC – TDA888xx (item 7301on Double Window PIP panel) I2C communication

failure.

Error codes 1,2, and 4 are protection codes, and in this case the supplies of some circuits will be switched off. Also in protection, the LED will blink the number of times equivalent to the most recent error code.

Error code table:

Code Number Error Description

00 Not an Error 01 Too high I-beam or East/West protection 02 Vertical protection 03 X-Ray protection 04 5 volt protection 05 Not Used 06

07 BC loop not stabilized 08

09 Bocma IC 8V failure 10 NVM IIC communication error 11 Wrong NVM type 12 Microp internal RAM error 13

14 Sound IC failure 15 SRAM test failure 16

17 ECO PIP IC or DW PIP IC failure 18

19 Gemstar Guide Plus board 20 V-chip located on the DW Pip 21 Non-Volatile clock 22 Incredible picture (YUV) CR 23 Bocma DoubleWindow TDA888X error 24 Not Used 25 Not Used 26 Not Used 27 Virtual Dolby 28 Not Used 29 Not Used 30

31 32 CSP NVM error - not valid data

General I2C error

Bocma TDA888X I2C error

Main tuner I2C failure

PIP Tuner I2C failure

I/O expander I2C error

CSP I2C error CSP NVM I2C error

CSP DAC I2C error

The Blinking LED Procedure

The contents of the error buffer can also be made visible through the “blinking LED” procedure. This is especially useful when there is no picture.

• When the SDM is entered, the LED will blink the number of times, equal to the value of the error code.

Upon entry into the SDM, the LED will blink the contents of the error-buffer. Error-codes greater than/equal to 10 are shown in the following manner: A long blink of 750 mS indicates the decimal digit; followed by a pause of 1500 mS. The LED will then blink

the number equal to the error code. When all error-codes are displayed, the sequence is finished with an LED display of 3 seconds. At this point the sequence will begin again.

Example: Error code position 1 2 3 4 5

Error buffer: 12 9 6 0 0

• After entering SDM:

• The sequence will begin with 1 long blink of 750 mS, then pause 1500 mS, then blink twice (indicating error

code 12), then the LED will pause for 3 seconds, then blink 9 times (indicating error code 9), then the LED will pause for 3 seconds, then blink 6 times (indicating error code 6), then pause 3 seconds and blink for 3 seconds again, ending the blinking sequence.

NOTE: If errors 1, 2 or 4 occur the LED ALWAYS blinks indicating the last error which occurred, even if the set

is NOT in service mode.

Customer Service Mode (CSM)

All Q8 sets are equipped with the “Customer Service Mode” (CSM). CSM is a special service mode that can be activated and deactivated by the customer, by request of the service technician/dealer in order to identify the status of the set. This CSM is a 'read only' mode, therefore modifications in this mode are not possible.

CSM Screen Structure

Entering the Customer Service Mode

The Customer Service Mode can be switched on:

• By pressing the MUTE button on the remote control and any key on the local keyboard (Channel Up, Channel Down, VOL +, VOL -) on the TV simultaneously for at least 4 seconds.

When the CSM is activated:

• picture and sound settings are set to nominal levels

• Modes that interfere with the behavior of the set are switched off (sleep timer, auto standby, etc.)

Exit the Customer Service Mode

The Customer Service Mode will be switched off after:

• Pressing any key on the remote control (except “Channel Up” or “Channel Down”)

• Switching off the TV set by pressing the Power button on the remote control or the local keyboard.

Exiting CSM resets the TV set back to its initial values.

The Customer Service Mode information screen

Upon entry into the Customer Service Mode the following screen will appear.

CSM Screen Structure

The Customer Service Menu shows the following information:

- Line 1 : “HRS : nnnnn” and SWID : “A10 2US1-X.Y”

HRS:

Indicates the accumulated total of operational hours. (Shown in hexadecimal format.) (Standby hours are not counted as operating hours).

SWID:

Software identification of the main micro controller (example: A10 2US1-4.30) A10 is the engineering chassis name for the Q8 chassis

• US1 is 2 letter and 1 digit combination to indicate the software type and the supported languages:

• US = USA

• 1 = Main Software language version number

• 4.30 = sub-version number

- Line 2 : “CODES : xx xx xx xx xx xx xx ”

Error code buffer (see explanation of error codes above) Displays the last 7 errors of the error code buffer.

- Line 3 : “OPT xxx xxx xxx xxx xxx xxx xxx xxx”

Option bytes

Option bits control the software and hardware functionality of the A10.0. An option byte or option number represents 8 of those bits. Each option number is displayed as a number between 0 and 255. The set may not work correctly when an incorrect option code is set. See Service Adjustments for more information on correct option settings

- Line 4: “SYSTEM : USA”

Indicates this set is equipped to receive an NTSC broadcast signal.

- Line 5 : “NO SIGNAL”

Indicates that the set is not receiving an “ident” signal on the selected source.

• no or bad antenna signal; connect a proper antenna signal

• antenna not connected; connect the antenna

• no channel / preset is stored at this program number; go to the INSTALL menu and store a proper channel

at this program number

• the tuner is faulty (in this case the CODES line will contain number 13 or 16); check the tuner and replace/repair if necessary

Note: On some models, (if the BM option is ON), BLUE MUTE is displayed when no signal is received.

- Line 6 : “TIMER ON ”

Indicates that the on/off timer is running. The following Complaints may be caused by the activation of the sleep timer: The set may turn on from standby or may switch to a different channel without using either the remote control or the local keyboard.

To switch off the activation timer: Select “TIMER” in the “FEATURE” menu. Select “ACTIVATE’ in the “TIMER” menu.

Set to “OFF” with the left/right cursor keys.

- Line 7 : NOT AVAILABLE

- Line 8 : “NOT PREFERRED”

Indicates that at least one channel is deleted as a preferred channel (by default, all channels are skipped. Note that “SKIPPED” will always be displayed in CSM unless all the channels are not skipped.

To add a channel as a selected channel to the list of preferred channels: Select “INSTALL” menu Select “CHANNEL EDIT” Select “ADD/DELETE” Set to “ADD” with the left/right cursor keys

- Line 9 : “HOTEL MODE ON”

Indicates that the Hotel mode has been activated.

- Line 10 : “SOURCE :”

Indicates which SOURCE is installed for this preset. EXT1, SVHS2, EXT2, Tuner.

- Line 11 : “SOUND”

Indicates which sound mode is installed for this preset. Mono, NICAM, Stereo, L1, L2, SAP, Virtual or Digital

- Line 12 : “VOLUME”