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Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7602
Model no.: 20LW202222 First Publish: 5-10-2001 Rev. Date: 10-16-2002 Print Date: 19/11/2005

Electrical Adjustments

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

Alignments Note: The Service Default Mode (SDM) and Service Alignment Mode (SAM) are described in Service Modes Error
Codes And Fault Finding. Menu navigation is done with the 'CURSOR UP, DOWN, LEFT or RIGHT' keys of the remote control transmitter.

General Alignment Conditions
Perform all electrical adjustments under the following conditions: · · · · · · AC voltage and frequency: 110 V (± 10 %), 60 Hz (± 5 %). Connect the set to the AC power via an isolation transformer. Allow the set to warm up for approximately 20 minutes. Measure the voltages and waveforms in relation to chassis ground (with the exception of the voltages on the primary side of the power supply). Never use the cooling fins / plates as ground. Test probe: Ri > 10 M; Ci < 2.5 pF. Use an isolated trimmer / screwdriver to perform the alignments.

Hardware Alignments

Fig. 1

Vg2 Adjustment
1. 2. 3. 4. Activate the SAM. Go to the WHITE TONE sub menu. Set the values of NORMAL RED, GREEN and BLUE to 40. Go, via the MENU key, to the normal user menu and set - CONTRAST to zero. - BRIGHTNESS to minimum (OSD just visible in a dark room). 5. Return to the SAM via the MENU key. 6. Connect the RF output of a pattern generator to the antenna input. Test pattern is a 'black' picture (blank screen on CRT without any OSD info).

7. Set the channel of the oscilloscope to 50 V/div and the time base to 0.2 ms (external triggering on the vertical pulse). 8. Ground the scope at the CRT panel and connect a 10:1 probe to one of the cathodes of the picture tube socket (see diagram B). 9. Measure the cut off pulse during first full line after the frame blanking (see Fig. 2). You will see two pulses, one being the cut off pulse and the other being the white drive pulse. Choose the one with the lowest value, this is the cut off pulse. 10. Select the cathode with the highest VDC value for the alignment. Adjust the Vcutoff of this gun with the SCREEN potentiometer (see Fig. 1) on the LOT to the correct value (see table below). 11. Restore BRIGHTNESS and CONTRAST to normal (= 31).

Fig. 2

Focusing
1. Tune the set to a circle or crosshatch test pattern (use an external video pattern generator). 2. Choose picture mode NATURAL (or MOVIES) with the 'SMART PICTURE' button on the remote control transmitter. 3. Adjust the FOCUS potentiometer (see Fig.1) until the vertical lines at 2/3 from east and west, at the height of the centerline, are of minimum width without visible haze.

Software Alignments And Settings
Enter the Service Alignment Mode (see Service Modes Error Codes And Fault Finding.). The SAM menu will now appear on the screen.

Options

Display Option Byte Table

Options are used to control the presence / absence of certain features and hardware.

How to change an Option Byte
An Option Byte represents a number of different options. Changing these bytes directly makes it possible to set all options very fast. All options are controlled via seven option bytes. Select the option byte (OB1.. OB7) with the MENU UP/DOWN keys, and enter the new value. Leaving the OPTION submenu saves changes in the Option Byte settings. Some changes will only take effect after the set has been switched OFF and ON with the AC power switch (cold start).

How to calculate the value of an Option Byte
Calculate an Option Byte value (OB1 .. OB7) in the following way: 1. Check the status of the single option bits (OP): are they enabled (1) or disabled (0). 2. When an option bit is enabled (1) it represents a certain value (see column 'Dec. value' in table below). When an option bit is disabled, its value is 0. 3. The total value of an Option Byte is formed by the sum of its eight option bits.

Option Bit Assignment
Following are the option bit assignments for all L01 software clusters. · Option Byte 1 (OB1) - OP10: CHINA - OP11: VIRGIN_MODE

- - - - - - · - - - - - - - - · - - - - - - - - · - - - - - - - - · - - - - - - - - · - - - - - -

OP12: UK_PNP OP13: ACI OP14: ATS OP15: LNA OP16: FM_RADIO OP17: PHILIPS_TUNER Option Byte 2 (OB2) OP20: HUE OP21: COLOR_TEMP OP22: CONTRAST_PLUS OP23: TILT OP24: NOISE_REDUCTION OP25: CHANNEL_NAMING OP26: SMART_PICTURE OP27: SMART_SOUND Option Byte 3 (OB3) OP30: AVL OP31: WSSB OP32: WIDE_SCREEN OP33: SHIFT_HEADER_SUBTITLE OP34: CONTINUOUS_ZOOM OP35: COMPRESS_16_9 OP36: EXPAND_4_3 OP37: EW_FUNCTION Option Byte 4 (OB4) OP40: STEREO_NON_DBX OP41: STEREO_DBX OP42: STEREO_PB OP43: STEREO_NICAM_2CS OP44: DELTA_VOLUME OP45: ULTRA_BASS OP46: VOLUME_LIMITER OP47: INCR_SUR Option Byte 5 (OB5) OP50: PIP OP51: HOTEL_MODE OP52: SVHS OP53: CVI OP54: AV3 OP55: AV2 OP56: AV1 OP57: NTSC_PLAYBACK Option Byte 6 (OB6) OP60: Reserved (value = 0) OP61: SMART_TEXT OP62: SMART_LOCK OP63: VCHIP OP64: WAKEUP_CLOCK OP65: SMART_CLOCK

- - · - - - - - - - -

OP66: SMART_SURF OP67: PERSONAL_ZAPPING Option Byte 7 (OB7) OP70: SOUND_SYSTEM_AP_3 /MULTI_STANDARD_EUR / SYSTEM_LT_2 OP71: SOUND_SYSTEM_AP_2 / WEST_EU/ SYSTEM_LT_1 OP72: SOUND_SYSTEM_AP_1 OP73: COLOR_SYSTEM_AP OP74: Reserved (value = 0) OP75: Reserved (value = 0) OP76: TIME_WIN2 OP77: TIME_WIN1

Option bit definition
· OP10: CHINA 0 : Tuning is not for China set, or this option bit is not applicable, 1 : Tuning is for China set, Default setting : 0. OP11: VIRGIN_MODE 0 : Virgin mode is disabled or not applicable, 1 : Virgin mode is enabled. Plug and Play menu item will be displayed to perform installation at the initial startup of the TV when VIRGIN_MODE is set to 1. After installation is finished, this option bit will be automatically set to 0, Default setting : 0. OP12: UK_PNP 0 : UK's default Plug and Play setting is not available or not applicable, 1 : UK's default Plug and Play setting is available. When UK_PNP and VIRGIN_MODE are set to 1 at the initial setup, LANGUAGE = ENGLISH, COUNTRY = GREAT BRITAIN and after exiting from menu, VIRGIN_MODE will be set automatically to 0 while UK_PNP remains 1, Default setting : 0. OP13: ACI 0 : ACI feature is disabled or not applicable, 1 : ACI feature is enabled, Default setting : 0. OP14: ATS 0 : ATS feature is disabled or not applicable, 1 : ATS feature is enabled. When ATS is enabled, it sorts the program in an ascending order starting from program 1, Default setting : 0. OP15: LNA 0 :Auto Picture Booster is not available or not applicable, 1: Auto Picture Booster is available, Default setting : 0. OP16: FM_RADIO 0 : FM radio feature is disabled or not applicable, 1 : FM radio feature is enabled, Default setting : 0. OP17: PHILIPS_TUNER 0 : ALPS / MASCO compatible tuner is in use, 1 : Philips compatible tuner is in use, Default setting : 0. OP20: HUE

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0 : Hue/Tint Level is disabled or not applicable, 1 : Hue/Tint Level is enabled, Default setting : 0. · OP21: COLOR_TEMP 0 : Color Temperature is disabled or not applicable, 1 : Color Temperature is enabled, Default setting : 0. OP22: CONTRAST_PLUS 0 : Contrast+ is disabled or not applicable, 1 : Contrast+ is enabled, Default setting : 0. OP23: TILT 0 : Rotate Picture is disabled or not applicable, 1 : Rotate Picture is enabled, Default setting : 0. OP24: NOISE_REDUCTION 0 : Noise Reduction (NR) is disabled or not applicable, 1 : Noise Reduction (NR) is enabled, Default setting : 0. OP25: CHANNEL_NAMING 0 : Name FM Channel is disabled or not applicable, 1 : Name FM Channel is enabled, Default setting : 0. Note : Name FM channel can be enabled only when FM_RADIO = 1. OP26: SMART_PICTURE 0 : Smart Picture is disabled or not applicable, 1 : Smart Picture is enabled, Default setting : 1 OP27: SMART_SOUND 0 : Smart Sound is disabled or not applicable, 1 : Smart Sound is enabled, Default setting : 1 AP30: AVL 0 : AVL is disabled or not applicable, 1 : AVL is enabled, Default setting : 0. OP31: WSSB 0 : WSSB is disabled or not applicable, 1 : WSSB is enabled, Default setting : 0. Note : This option bit can be set to 1 only when WIDE_SCREEN = 1. OP32: WIDE_SCREEN 0 : Software is used for 4:3 set or not applicable, 1 : Software is used for 16:9 set, Default setting : 0. OP33: SHIFT_HEADER_SUBTITLE 0 : Shift Header / Subtitle is disabled or not applicable, 1 : Shift Header / Subtitle is enabled, Default setting : 0. Note : This option bit can be set to 1 only when WIDE_SCREEN = 1.

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OP34: CONTINUOUS_ZOOM 0 : Continuous Zoom is disabled or not applicable, 1 : Continuous Zoom is enabled, Default setting : 0. Note : This option bit can be set to 1 only when WIDE_SCREEN = 1. OP35: COMPRESS_16_9 0 : COMPRESS 16:9 selection is not applicable. Item should not be in the FORMAT menu list, 1 : COMPRESS 16:9 selection is applicable. Item should not be in the FORMAT menu list, Default setting : 0. OP36: EXPAND_4_3 0 : Expand 4:3 selection is not applicable. Item should not be in the FORMAT menu list, 1 : Expand 4:3 selection is applicable. Item should be in the FORMAT menu list, Default setting : 0. OP37: EW_FUNCTION 0 : EW function is disabled. In this case, only Expand 4:3 is allowed, Compress 16:9 is not applicable. 1 : EW function is enabled. In this case, both Expand 4:3 and Compress 16:9 are applicable. Default setting : 0. OP40: STEREO_NON_DBX 0 : For AP_NTSC, chip TDA 9853 is not present, 1 : For AP_NTSC, chip TDA 9853 is present, Default setting : 0. OP41: STEREO_DBX 0 : For AP_NTSC, chip MSP 3445 is not present, 1 : For AP_NTSC, chip MSP 3445 is present, Default setting : 0. OP42: STEREO_PB 0 : For AP_PAL, chip MSP3465 is not present, 1 : For AP_PAL, chip MSP3465 is present, Default setting : 0. OP43: STEREO_NICAM_2CS 0 : For EU and AP_PAL, chip MSP 3415 is not present, 1 : For EU and AP_PAL, chip MSP 3415 is present, Default setting : 0. OP44: DELTA_VOLUME 0 : Delta Volume Level is disabled or not applicable, 1 : Delta Volume Level is enabled, Default setting : 0. OP45: ULTRA_BASS 0 : Ultra Bass is disabled or not applicable, 1 : Ultra Bass is enabled, Default setting : 0. OP46: VOLUME_LIMITER 0 : Volume Limiter Level is disabled or not applicable, 1 : Volume Limiter Level is enabled, Default setting : 0. OP47: INCR_SUR 0 : Incredible Surround feature is disabled, 1 : Incredible Surround feature is enabled, Default setting : 1 OP50: PIP 0 : PIP is disabled or not applicable,

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1 : PIP is enabled, Default setting : 0. · OP51: HOTEL_MODE 0 : Hotel mode is disabled or not applicable, 1 : Hotel mode is enabled, Default setting : 0. OP52: SVHS 0 : SVHS source is not available, 1 : SVHS source is available, Default setting : 0. Note : This option bit is not applicable for EU. OP53: CVI 0 : CVI source is not available, 1 : CVI source is available, Default setting : 0. OP54: AV3 0 : Side/Front AV3 source is not present, 1 : Side/Front AV3 source is present, Default setting : 0. OP55: AV2 0 : AV2 source is not present, 1 : AV2 source is present, Default setting : 0. Note : For EU, when AV2=1, both EXT2 and SVHS2 should be included in the OSD loop. OP56: AV1 0 : AV1 source is not present, 1 : AV1 source is present, Default setting : 0. OP57: NTSC_PLAYBACK 0 : NTSC playback feature is not available, 1 : NTSC playback feature is available, Default setting : 0. OP60: Reserved Default setting : 0. OP61: SMART_TEXT 0 : Smart Text Mode and Favorite Page are disabled or not applicable, 1 : Smart Text Mode and Favorite Page are enabled, Default setting : 1. OP62: SMART_LOCK 0 : Child Lock and Lock Channel are disabled or not applicable for EU, 1 : Child Lock and Lock Channel are enabled for EU, Default setting : 1. OP63: VCHIP 0 : VCHIP feature is disabled, 1 : VCHIP feature is enabled, Default setting : 1. OP64: WAKEUP_CLOCK 0 : Wake up clock feature is disabled or not applicable, 1 : Wake up clock feature is enabled, Default setting : 1.

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OP65: SMART_CLOCK 0 : Smart Clock Using Teletext and Smart Clock Using PBS is disabled or not applicable, 1 : Smart Clock Using Teletext and Smart Clock Using PBS is enabled. For NAFTA, menu item AUTOCHRON is present in the INSTALL submenu, Default setting : 0. OP66: SMART_SURF 0 : Smart Surf feature is disabled or not applicable, 1 : Smart Surf feature is enabled, Default setting : 0. OP67: PERSONAL_ZAPPING 0 : Personal Zapping feature is disabled or not applicable, 1 : Personal Zapping feature is enabled, Default setting : 0. OP70: MULTI_STANDARD_EUR 0 : Not for Europe multi standard set, or this option bit is not applicable, 1 : For Europe multi standard set. Default setting : 0. Note : This option bit is used to control the SYSTEM selection in Manual Store : If MULTI_STANDARD_EUR = 1 then SYSTEM = Europe, West Europe, East Europe, UK, France otherwise SYSTEM = 'Europe, West Europe, UK for West Europe' (WEST_EU=1) or SYSTEM = 'Europe, West Europe, East Europe for East Europe' (WEST_EU=0) OP71: WEST_EU 0 : For East Europe set, or this option bit is not applicable, 1 : For West Europe set, Default setting : 0. OP71 and 70: SYSTEM_LT_1, SYSTEM_LT_2 These two option bits are allocated for LATAM system selection. 00 : NTSC-M 01 : NTSC-M, PAL-M 10 : NTSC-M, PAL-M, PAL-N 11 : NTSC-M, PAL-M, PAL-N, PAL-BG Default setting : 00 OP70, 71 and 72: SOUND_SYSTEM_AP_1, SOUND_SYSTEM_AP_2, SOUND_SYSTEM_AP_3 These three option bits are allocated for AP_PAL sound system selection. 000 : BG 001 : BG / DK 010 : I / DK 011 : BG / I / DK 100 : BG / I / DK / M Default setting : 00 OP73: COLOR_SYSTEM_AP This option bit is allocated for AP-PAL color system selection. 0 : Auto, PAL 4.43, NTSC 4.43, NTSC 3.58 1 : Auto, PAL 4.43, NTSC 4.43, NTSC 3.58, SECAM Default setting : 0 OP74: Reserved Default setting : 0. OP75: Reserved Default setting : 0.

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OP77 and 76: TIME_WIN1, TIME_WIN2 00 :The time window is set to 1.2s 01 : The time window is set to 2s 10 : The time window is set to 5s 11 : not in use Default setting : 01 Note :The time-out for all digit entries depend on this setting.

Tuner
Note: Described alignments are only necessary when the NVM (item 7602) is replaced.

IF PLL
This adjustment is auto-aligned. Therefore, no action is required.

AFW (AFC window)
Fixed value is OFF.

AGC (AGC take over point)
Set the external pattern generator to a color bar video signal and connect the RF output to aerial input. Set amplitude to 10 mV and set frequency to 61.25 MHz (channel 3). Connect a DC multimeter to pin 1 of the tuner (item 1000 on the main panel). 1. Activate the SAM. 2. Go to the TUNER sub menu. 3. Select AFW with the UP/DOWN cursor keys and set to ON. 4. Select AGC with the UP/DOWN cursor keys. 5. Adjust the AGC-value (default value is 27) with the LEFT/RIGHT cursor keys until the voltage at pin 1 of the tuner

6. 7.

lies between 3.8 and 2.3 V. Select AFW with the UP/DOWN cursor keys and set to OFF. Switch the set to STANDBY.

YD (Y-delay adjustment)
Always set to 3.

CL (Cathode drive level)
Always set to 4.

AFA
Read only bit, for monitoring purpose only.

AFB
Read only bit, for monitoring purpose only.

White Tone

In the WHITE TONE sub menu, the values of the black cut off level can be adjusted. Normally, no alignment is needed for the WHITE TONE. You can use the given default values. The color temperature mode (NORMAL, COOL and WARM) and the color (R, G, and B) can be selected with the UP/DOWN RIGHT/LEFT cursor keys. The value can be changed with the LEFT/RIGHT cursor keys. First, select the values for the NORMAL color temperature. Then select the values for the COOL and WARM mode. After alignment, switch the set to standby, in order to store the alignments. Default settings: 1. NORMAL (color temperature = 10500 K): - - - NORMAL R = 40 NORMAL G = 40 NORMAL B = 40

2. COOL (color temperature = 14000 K): - DELTA COOL R = -2 - DELTA COOL G = 0 - DELTA COOL B = 6 3. WARM (color temperature = 8200 K): - - - DELTA WARM R = 2 DELTA WARM G = 0 DELTA WARM B = -7

Geometry
The geometry alignments menu contains several items to align the set, in order to obtain a correct picture geometry. Connect an external video pattern generator to the aerial input of the TV-set and input a crosshatch test pattern. Set the generator amplitude to at least 1 mV and set frequency to 61.25 MHz (channel 3). 1. Set 'Smart Picture' to NATURAL (or MOVIES). 2. Activate the SAM menu (see chapter 5). 3. Go to the GEOMETRY sub menu. 4. Choose HORIZONTAL or VERTICAL alignment Now the following alignments can be performed:

Horizontal:
· · Horizontal Parallelogram (HP) Align straight vertical lines in the top and the bottom; vertical rotation around the center. Horizontal Bow (HB) Align straight horizontal lines in the top and the bottom; horizontal rotation around the center.

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Horizontal Shift (HSH) Align the horizontal center of the picture to the horizontal center of the CRT. East West Width (EWW) Align the picture width until the complete test pattern is visible. East West Parabola (EWP) Align straight vertical lines at the sides of the screen. Upper Corner Parabola (UCP) Align straight vertical lines in the upper corners of the screen. Lower Corner Parabola (LCP) Align straight vertical lines in the lower corners of the screen. East West Trapezium (EWT) Align straight vertical lines in the middle of the screen. H60 Align straight horizontal lines if NTSC system is used (60 Hz) i.s.o. PAL (50 Hz).

Vertical:
· · · · · · · Vertical slope (VSL) Align the vertical center of the picture to the vertical center of the CRT. This is the first of the vertical alignments to perform. For an easy alignment, set SBL to ON. Vertical Amplitude (VAM) Align the vertical amplitude so that the complete test pattern is visible. Vertical S-Correction (VSC) Align the vertical linearity, meaning that vertical intervals of a grid pattern must be equal over the entire screen height. Vertical Shift (VSH) Align the vertical centering so that the test pattern is located vertically in the middle. Repeat the 'vertical amplitude' alignment if necessary. Vertical Zoom (VX) The vertical zoom is added in for the purpose of development. It helps the designer to set a proper values for the movie expand or movie(16x9) compress. Default value is 25. V60 Align straight vertical lines if NTSC system (60 Hz) is used i.s.o. PAL (50 Hz). Service blanking (SBL) Switch the blanking of the lower half of the screen ON or OFF (to be used in combination with the vertical slope alignment).

In the table below, you will find the GEOMETRY default values for the different sets.

Audio

No alignments are needed for the audio sub menu. Use the given default values.

AT
Default value is 8.

CMT
Default value is 42.

QSS
OFF for mono sets, ON for stereo sets.

FMI
OFF for mono sets, ON for stereo sets.

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7602
Model no.: 20LW202222 First Publish: 5-10-2001 Rev. Date: 10-16-2002 Print Date: 19/11/2005

Troubleshooting

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

Service Modes, Error Codes And Fault Finding Test Points
The chassis is equipped with test points printed on the circuit board assemblies. These test points refer to the functional blocks:

Test point
A1-A2-A3-.. C1-C2-C3-.. F1-F2-F3-.. I1-I2-I3-.. L1-L2-L3-.. P1-P2-P3-.. S1-S2-S3-.. V1-V2-V3-..

Circuit
Audio processing Control Frame drive and output Tuner & IF Line drive and output Power supply Synchronization Video processing

Diagram
A8, A9 / A11 A7 A3 A4 A2 A1 A6 A5, B1

The numbering is in a logical sequence for diagnostics. Always start diagnosing within a functional block in the sequence of the relevant test points for that block. Perform measurements under the following conditions: · · · Service Default Mode. Video: color bar signal. Audio: 3 kHz left, 1 kHz right.

Service Modes
Service Default Mode (SDM) and Service Alignment Mode (SAM) offer several features for the service technician, while the Customer Service Mode (CSM) is used for communication between dealer and customer. Note: Some L8 and M8 chassis sets use a software version that does not contain the Service Modes (see table). In this case, use the special Factory Mode Remote Control. This can be ordered by service code 4835 310 57511. Complete instructions are included. This remote control will place the TV in the Factory Mode and allow access to all adjustments that a normal Service Mode contains (including setting Option Bytes). Error codes will not be available. There is also the option of using ComPair, a hardware interface between a computer (see requirements) and the TV chassis. It offers the ability of structured trouble shooting, error code reading and software version readout for all L8 and M8 chassis. Requirements: To run ComPair on a computer (laptop or desktop) requires, as a minimum, a 486 processor, Windows 3.1 and a CD-ROM drive. A Pentium Processor and Windows 95/98 are also acceptable (see also ComPair).

SW. cluster
1US0

Softwar name
L01UN0-x.y

UOC type
TDA9587

Diversity
Stereo,

Remark
All Servioce

1US0

L01UN0-x.y

TDA9587

Stereo, non-DBX, CC Stereo,-DBX CC Mono, CC Mono, CC Stereo,-DBX CC Stereo, non-DBX, CC

All Servioce Modes Only Com-Pair (*) All Service Modes Without CSM (*) Only Con-Pair (*) Without CSM (*)

1US1 2US0 2US1 3US0 3US1

L01US1-x.y L01UM0-x.y L01UM1-x.y L01US0-x.y L01UN1-x.y

TDA9587/ TDA9588 TDA9587 TDA9587 TDA9588 TDA9587

Abbreviations in "Software Name": U=USA, N=Stereo non-DBX, S=Stereo DBX, M=Mono

Service Default Mode (SDM)
Purpose
· · · To create a predefined setting to get the same measurement results as given in this manual. To override SW protections. To start the blinking LED procedure.

Specifications
· · · · · Tuning frequency: 61.25 MHz (channel 3). Color system: NTSC. All picture settings at 50 % (brightness, color contrast, hue). Bass, treble and balance at 50 %; volume at 25 %. All service-unfriendly modes (if present) are disabled, like: - (sleep) timer, - child/parental lock, - blue mute, - hotel/hospitality mode - auto switch-off (when no 'IDENT' video signal is received for 15 minutes), - skip / blank of non-favorite presets / channels, - auto store of personal presets, - auto user menu time-out.

How to enter SDM
· · Use a standard customer RC-transmitter and key in the code 062596 directly followed by the MENU button, or Short wires 9631 and 9641 on the mono carrier and switch the set ON apply AC power. Then press the power button (remove short after start-up). Caution: Entering SDM by shorten wires 9631 and 9641 will override the +8V-protection. Do this only for a short period. When doing this, the service-technician must know exactly what he is doing, as it could lead to damaging

After entering SDM, the following screen is visible, with SDM at the upper right side for recognition.

How to navigate
· When you press the MENU button on the remote control, the set will switch between the SDM and the normal user menu (with the SDM mode still active in the background). Return to the SDM screen with the OSD / STATUS button. When you press the OSD / STATUS button on the remote control, the menu will show or hide the error buffer. This feature is available to prevent interference during waveform measurements. On the TV press and hold the 'VOLUME down' and press the 'CHANNEL down' for a few from SDM to SAM and reverse.

· ·

How to exit
Switch the set to STANDBY by pressing the power button on the remote control transmitter (if you switch the set OFF by removing the AC power, the set will return in SDM when AC power is re-applied). The error buffer is cleared.

Service Alignment Mode (SAM)
Purpose
· · · To perform alignments. To change option settings. To display / clear the error code buffer.

Specifications
· · · · · Operation hours counter. Software version. Option settings. Error buffer reading and erasing. Software alignments.

How to enter
· · Use a standard customer RC-transmitter and key in the code 062596 directly followed by the OSD / STATUS button or Via ComPair.

The following screen is visible, with SAM at the upper right side for recognition.

1. LLLL This is the operation hours counter. It counts the normal operation hours, not the standby hours. 2. AAABCD-X.Y This is the software identification of the main micro controller · A = the project name (L01). · B = the region: E = Europe, A = Asia Pacific, U = NAFTA, L = LATAM. · C = the software diversity: N = stereo non-DBX, S = stereo DBX, M = mono, D = DVD. · D = the language cluster number. · E = UOC diversity. · X = the main software version number. · Y = the sub software version number. 3. SAM Indication of the actual mode. 4. Errors buffer Five errors possible. 5. Option bytes Seven codes possible. 6. Clear Erase the contents of the error buffer. Select the CLEAR menu item and press the CURSOR RIGHT key. The content of the error buffer is cleared. 7. Options To set the Option Bytes. See chapter 8.3.1 for a detailed description. 8. AKB Disable (0) or enable (1) the 'black current loop' (AKB = Auto Kine Bias). 9. Tuner To align the Tuner. See chapter 8.3.2 for a detailed description. 10. White Tone To align the White Tone. See White tone for a detailed description. 11. Geometry To align the set geometry. See Geometry for a detailed description. 12. Audio No audio alignment is used for NTSC.

How to navigate
· In SAM, select menu items with the CURSOR UP/DOWN key on the remote control transmitter. The selected item will be highlighted. When not all menu items fit on the screen, move the CURSOR UP/DOWN key to display the next / previous menu items.

·

· ·

With the CURSOR LEFT/RIGHT keys, it is possible to: - (De)activate the selected menu item. - Change the value of the selected menu item. - Activate the selected submenu. When you press the MENU button twice, the set will switch to the normal user menus (with the SAM mode still active in the background). To return to the SAM menu press the OSD / STATUS button [ i+ ]. When you press the MENU key in a submenu, you will return to the previous menu.

How to exit
Switch the set to STANDBY by pressing the power button on the remote control transmitter (if you switch the set OFF by removing the AC power, the set will return in SAM when AC power is re-applied). The error buffer is not cleared.

Customer Service Mode (CSM)
Purpose
The Customer Service Mode is (de-)activated by the customer upon request of the service technician during a telephone conversation, in order to identify the status of the set. This CSM is a read only mode, therefore modifications in this mode are not possible.

How to enter
The CSM will be turned on after pressing the MUTE key on the remote control transmitter and any of the control buttons on the TV for at least 4 seconds simultaneously. This activation only works if there is no menu on the screen. After switching ON the Customer Service Mode, the following screen will appear:

1. Software identification of the main micro controller (see Service Alignment Mode for an explanation). 2. Error code buffer (see for more details). Displays the last seven errors of the error code buffer. 3. In this line, the Option Bytes (OB) are visible. Each Option Byte is displayed as a decimal number between 0 and 255. The set may not work correctly when an incorrect option code is set. See Options for more information on the option settings. 4. Indicates which color and sound system is installed for the selected pre-set. 5. Indicates if the set is not receiving an 'IDENT' signal on the selected source. It will display 'Not Tuned'.

6. Indicates if the sleep timer is enabled. 7. Indicates if the V-chip feature is enabled. 8. Value indicates parameter levels at CSM entry. CO = CONTRAST, CL = COLOR, BR = BRIGHTNESS, HU = HUE, SH = SHARPNESS 9. Value indicates parameter levels at CSM entry. VL = VOLUME LEVEL, BL = BALANCE LEVEL, AVL LIM = AUTO VOLUME LEVEL LIMITER 10. Value indicates parameter levels at CSM entry. DV = DELTA VOLUME, BS = BASS LEVEL, TR = TREBLE LEVEL

How to exit
You can turn the Customer Service Mode off: · · After you press 'any' key of the remote control transmitter with exception of the CHANNEL and VOLUME keys. After you switch-off the TV set with the AC power switch.

Problems And Solving Tips (Related To CSM)
Picture Problems
No colors / noise in picture Check CSM line 4. Wrong color system installed. To change the setting: 1. Select the MANUAL STORE sub menu. 2. Select and change the SYSTEM setting until picture and sound are correct. 3. Select the STORE menu item. Colors not correct / unstable picture Check CSM line 4. Wrong color system installed. To change the setting: 1. Press the MENU button on the remote control. 2. Select the INSTALL sub menu. 3. Select the MANUAL STORE sub menu. 4. Select and change the SYSTEM setting until picture and sound are correct. 5. Select the STORE menu item. TV switches off or changes channel without any user action The TV set switches off after TV SWITCHING OFF was displayed. Auto standby switched the set off because: · There was no 'ident' signal for more than 15 minutes or · There was no remote control signal received or local key pressed for > 2 hours. See Alignmentsfor a description of the options to enable / disable auto standby Picture too dark or too bright Increase / decrease the BRIGHTNESS and / or the CONTRAST value when: · The picture improves after you have pressed the 'Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new 'Personal' preference value is automatically stored. White line around picture elements and text

Decrease the SHARPNESS value when: · The picture improves after you have pressed the 'Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new 'Personal' preference value is automatically stored. Snowy picture Check CSM line 5. If this line indicates 'Not Tuned', check the following: · · · · 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 error number 10). Check the tuner and replace / repair if necessary.

Snowy picture and/or unstable picture · A scrambled or decoded signal is received.

Black and white picture Increase the COLOR value when: · The picture improves after you have pressed the 'Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new 'Personal' preference value is automatically stored. Menu text not sharp enough Decrease the CONTRAST value when: · The picture improves after you have pressed the 'Smart Picture' button on the remote control. · The picture improves after you have switched on the Customer Service Mode The new 'Personal' preference value is automatically stored.

Sound Problems
No sound or sound too loud (after channel change / switching on) Increase / decrease the VOLUME level when the volume is OK after you switched on the CSM. The new 'Personal' preference value is automatically stored.

ComPair
Introduction
ComPair (Computer Aided Repair) is a service tool for Philips Consumer Electronics products. ComPair is a further development on the European DST (service remote control), which allows faster and more accurate diagnostics. Compare has three big advantages: · · · ComPair helps you to quickly get an understanding on how to repair the chassis in a short time by guiding you systematically through the repair procedures. ComPair allows very detailed diagnostics (on I2C level) and is therefore capable of accurately indicating problem areas. You do not have to know anything about I 2 C commands yourself because ComPair takes care of this. ComPair speeds up the repair time since it can automatically communicate with the chassis (when the

microprocessor is working) and all repair information is directly available. When ComPair is installed together with the SearchMan electronic manual of the defective chassis, schematics and PWBs are only a mouse click away.

Specifications
ComPair consists of a Windows based faultfinding program and an interface box between PC and the (defective) product. The ComPair interface box is connected to the PC via a serial or RS232 cable. In case of the L8/M8 chassis, the ComPair interface box and the TV communicate via a bi-directional service cable via the service connector (located on the Main panel, see Hardware alignments suffix D). The ComPair faultfinding program is able to determine the problem of the defective television. ComPair can gather diagnostic information in two ways: 1. Automatic (by communication with the television) ComPair can automatically read out the contents of the entire error buffer. Diagnosis is done on I 2 C level. ComPair can access the I 2 C bus of the television. ComPair can send and receive I 2 C commands to the micro controller of the television. In this way, it is possible for ComPair to communicate (read and write) to devices on the I 2 C busses of the TV-set. 2. Manually (by asking questions to you) Automatic diagnosis is only possible if the micro controller of the television is working correctly and only to a certain extend. When this is not the case, ComPair will guide you through the faultfinding tree by asking you questions (e.g. Does the screen gives a picture? Click on the correct answer: YES / NO) and showing you examples (e.g. Measure test-point I7 and click on the correct oscillogram you see on the oscilloscope). You can answer by clicking on a link (e.g. text or a waveform picture) that will bring you to the next step in the faultfinding process. By a combination of automatic diagnostics and an interactive question / answer procedure, ComPair will enable you to find most problems in a fast and effective way. Beside fault finding, ComPair provides some additional features like: · · · · Up- or downloading of presets. Managing of preset lists. Emulation of the (European) Dealer Service Tool (DST). If both ComPair and SearchMan (Electronic Service Manual) are installed, all the schematics and the PWBs of the set are available by clicking on the appropriate hyperlink.

Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Monocarrier. Click on the 'Panel' hyperlink to automatically show the PWB with a highlighted capacitor C2568. Click on the 'Schematic' hyperlink to automatically show the position of the highlighted capacitor.

How To Connect
1. First install the ComPair Browser software (see the Quick Reference Card for installation instructions). 2. Connect the RS232 interface cable between a free serial (COM) port of your PC and the PC connector (marked with 'PC') of the ComPair interface. 3. Connect the AC power adapter to the supply connector (marked with 'POWER 9V DC') on the compare interface. 4. Switch the ComPair interface OFF. 5. Switch the television set OFF, remove the AC power. 6. Connect the ComPair interface cable between the connector on the rear side of the ComPair interface (marked with 'I 2 C') and the ComPair connector on the mono carrier (see figure 8-1 suffix D). 7. Plug the AC power adapter in the AC power outlet and switch on the interface. The green and red LEDs light up

together. The red LED extinguishes after approx. 1 second while the green LED remains lit. 8. Start the ComPair program and read the introduction chapter.

How To Order
ComPair order codes: · · · · · · · Starter kit ComPair + SearchMan software + compare interface (excluding transformer): 4822 727 21629 ComPair interface (excluding transformer): 4822 727 21631 Starter kit ComPair software (registration version): 4822 727 21634 Starter kit SearchMan software: 4822 727 21635 ComPair CD (update): 4822 727 21637 SearchMan CD (update): 4822 727 21638 ComPair interface cable: 3122 785 90004

Error Codes
Introduction
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, it is written at the left side and all other errors shift one position to the right. The error code buffer is cleared in the following cases: · · · · By activation of the CLEAR command in the SAM menu: When you exit SDM / SAM with the STANDBY command on the remote control (when leaving SDM / SAM, by disconnecting the set from AC power, the error buffer is not reset). When you transmit the command DIAGNOSE-99-OK with ComPair. If the content of the error buffer has not changed for 50 hours, it resets automatically.

Examples: ERROR: 0 0 0 0 0: No errors detected. ERROR: 6 0 0 0 0: Error code 6 is the most recent and only detected error. ERROR: 9 6 0 0 0: Error code 6 was first detected and error code 9 is the most recent detected error. You can also make the contents of the error buffer visible via the blinking LED procedure (see The Blinking LED ProcedureThis is especially useful when there is no picture.

Error Codes
In case of non-intermittent faults, clear the error buffer before you begin the repair. These to ensure that old error codes are no longer present. If possible, check the entire contents of the error buffer. In some situations an error code is only the result of another error code and not the actual cause (e.g., a fault in the protection detection circuitry can also lead to a protection).
E 0 1 Device Error description No Error X-Ray / over-voltage protection 2 High beam current Horizontal Protection Set will hiccup until it goes to protection mode-Fly back line after 5 s in protection mode 3 TDA8359/ TDA9302 Vertical Protection Set will hiccup until it goes to protection mode-One hor. Line after 5 s in protection mode 4 MSP34X5/ TDA9853 5 6 TDA95xx I2C bus MSP I2C identification error POR / +8V protection General I2C bus error Set turned on without sound output Set will hiccup until it goes to protection mode after 8 s Set is in protection mode ViotlAux +5V, +8V,7831,3823/33, 7861,3865/66 3V3, +8V, 7200, 7560, 7480 SDA/SCL, 1000, 7200, 7600/01, 3624/25 7 8 AN7522/3 Power down (over current) protection E/W protection (Large Screen) 9 10 11 12 M24C08 Tuner TDA6107/8 M65669 NVM I2C identification error Tuner I2C identification error Black current loop protection PIP I2C identification error Set will hiccup until it goes to protection mode Geometry wrong or set in protection mode Set will turn on but is unable to store data Set will turn on but has no picture and sound Fly back line after 5 s in protection mode Picture in picture does not function MainAux, 7901/02, 7561/62 ViotAux+11V, 3400, 3405/06, 7400 3V3, 7601/02, 3611, 3603/04 ViotlAux +5V, 1100, 7482 +200V, 7330, RGB amps, CRT +5V, +8V, 7803, 7890/91 P B1, B2 A4, A2 A7 A2 A8, A1 A7 A5-A7, A1, A2 A9 or A11 Symptom Set will hiccup until it goes to protection mode Check 2407 & 7402 (L8),2465 & 7460 (M8) CRT panel, 3340 +200V, LOT 5445, 7460-7463, 6467, hor. Defl. Coil ViotlAux +13V, +50V (M8) 7471, vert. Defk, Coil A2, A3 B1, B2 A2 Diagram A2

The Blinking LED Procedure
Via this procedure you can make the contents of the error buffer visible via the front LED. This is especially useful when there is no picture.

When the SDM is entered, the LED will blink the contents of the error-buffer. Error-codes 10 are shown as follows: - a long blink of 750 ms (which is an indication of the decimal digit), - a pause of 1.5 s, - n short blinks (n = 1 - 9), - when all the error-codes are displayed, the sequence finishes with a LED blink of 3 s, - the sequence starts again. Example of error buffer: 12 9 6 0 0 After entering SDM: - - - - - - 1 long blink of 750 ms followed by a pause of 1.5 s, 2 short blinks followed by a pause of 3 s, 9 short blinks followed by a pause of 3 s, 6 short blinks followed by a pause of 3 s, 1 long blink of 3 s to finish the sequence, the sequence starts again.

Protections
If a fault situation is detected an error code will be generated and if necessary the set will be put in the protection mode. Blinking of the red LED at a frequency of 3 Hz indicates the protection mode. In some error cases the microprocessor does not put the set in the protection mode. The error codes of the error buffer can be read via the service menu (SAM), the blinking LED procedure or via ComPair. The DST diagnose functionality will force the set into the Service-standby, which is similar to the usual standby mode, however the microprocessor has to remain in normal operation completely. To get a quick diagnosis the chassis has three service modes implemented: · · · The Customer Service Mode (CSM). The Service Default Mode (SDM). Start-up of the set in a predefined way. The Service Alignment Mode (SAM). Adjustment of the set via a menu and with the help of test patterns.

See for a detailed description Circuit description

Repair Tips
Below some failure symptoms are given, followed by a repair tip. · Set is dead and makes hiccuping sound 'MainSupply' is available. Hiccupping stops when de-soldering L5561, meaning that problem is in the 'MainSupply' line. No output voltages at LOT, no horizontal deflection. Reason: line transistor 7460 is defective. Set is dead, and makes no sound Check power supply IC 7520. Result: voltage at pins 1, 3, 4, 5 and 6 are about 180 V and pin 8 is 0 V. The reason why the voltage on these pins is so high is because the output driver (pin 6) has an open load. That is why MOSFET 7521 is not able to switch. Reason: feedback resistor 3523 is defective. Caution: be careful measuring on the gate of 7521; circuitry is very high ohmic and can easily be damaged! Set is in hiccup mode and shuts down after 8 s. Blinking LED (set in SDM mode) indicates error 5. As it is unlikely that ?P 'POR' and '+8V protection' happen at the same time, measure the '+8V'. If this voltage is missing, check transistor 7480.

·

·

·

Set is non-stop in hiccup mode Set is in over current mode; check the secondary sensing (opto coupler 7515) and the 'MainSupply' voltage. Signal 'Stdby_con' must be logic low under normal operation conditions and goes to high (3.3 V) under standby and fault conditions. Set turns on, but without picture and sound The screen shows snow, but OSD and other menus are okay. Blinking LED procedure indicates error 11, so problem is expected in the tuner (pos. 1000). Check presence of supply voltages. As 'Vlotaux+5V' at pin 5 and 7 are okay, 'VT_supply' at pin 9 is missing. Conclusion: resistor 3460 is defective. Set turns on, but with a half screen at the bottom. Sound is okay Blinking LED (set in SDM mode) indicates error 3. Check 'Vlotaux+11V' and '+50V'. If they are okay, problem is expected in the vertical amplifier IC 7471. Measure with a scope the waveform on pin 17 of the UOC. Measure also at pin 1 of IC 7471. If here the signal is missing, a defective resistor R3244 causes the problem.

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·

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Chassis: 19L8

Contents of Known Faults for: 19L8 1. - 19PS45S121 and S122 with 19L8 chassis 2. - CHANNELS 5 AND 6 SLOW TO TUNE ON ICC CABLE 3. - CLIP FOR HORIZONTAL XISTOR HEATSINK 4. - COLOR INTERMITTENT, MISSING, MARGINAL 5. - ComPair COMMUNICATION ERRORS 6. - ComPair WILL NOT SAVE 7. - CRACK POP IN DBX STEREO MODELS 8. - F ON SCREEN, IN FACTORY MODE 9. - Jack Panel Connectors 10. - LINES ON LEFT EDGE OF PICTURE 11. - LOCKUP, CORRUPT CLOSED CAPTION, MORE MODELS 12. - MODELS WITHOUT SERVICE MODES 13. - REMOTE RANGE 14. - SLUGGISH RESPONSE/CORRUPT CLOSED CAPTION 15. - SOUND SCREECH 16. - STEREO WITH VCR AND SET TOP BOX 17. - V-CHIP BLOCK IN FACTORY MODE 18. - V-CHIP BLOCKING BACK DOOR ENTRY 19. - VERTICAL SLOPE CHANGE WITH WARM UP

No. 1 **************************** Manual Number: 7602 19PS45S121 and S122 with 19L8 chassis INFORMATION: This model, 19PS45S121, or -S122is a "mixed model". While it has a model (19PS45) that is a 2002 introduction it has the 2001 chassis (19L8). It was only built during February, March and April of 2002. In May of 2002 the chassis changed to 19S8 and the model changed from -S121/-S122 to -S321 and -S322. The micro/UOC (7200) for the -S121/-S122 version is 9352 699 89557. Refer to 19PS40 for other information.

No. 2 **************************** Manual Number: 7602 CHANNELS 5 AND 6 SLOW TO TUNE ON ICC CABLE SYMPTOM: Channel 5 and 6 slow to settle tuning on ICC cable system. Incremental Coherent Carrier cable systems have all channels at normal frequencies, except 5 and 6 which are 2 Mhz above normal. May be accompanied by a screech sound during the delayed tuning sequence. CURE: Enter customer Install menu and select CABLE instead of AUTO. Then run AUTO PROGRAM function.

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Chassis: 19L8

No. 3 **************************** Manual Number: 7602 CLIP FOR HORIZONTAL XISTOR HEATSINK Symptom: There have been a few scattered reports of a broken heat sink clip for the horizontal output transistor (7402).

Resolution: The correct part number is : Order 3139 121 24581.

Applies To: 13L8, 13PR10G121, 13PR10G199, 13PR11M121, 13PR11M199, 13PR12W121, 13PR12W199, 14L8, 14LL100121, 14LW102221, 14LX100121, 14RF50S3, 14RF50S399, 15PV1022, 19L8, 19PR11C121, 19PR11C122, 19PR11C125, 19PR11C199, 19PR16C121, 19PR16C122, 19PR16C125, 19PR16C199, 19PS30C121, 19PS30C122, 19PS30C125, 19PS30C199, 19PS40C121, 19PS40C122, 19PS40C125, 19PS40C199, 19PS45S121, 19PS45S199, 19PS50S121, 19PS50S122, 19PS50S125, 19PS50S199, 20LL200122, 20LL200125, 20LW202222, 20LW202225, 20LX200122, 20LX200125, 20LZ202222 No. 4 **************************** Manual Number: 7602 COLOR INTERMITTENT, MISSING, MARGINAL SYMPTOM: Color missing, marginal or intermittent. Sometimes on one or some channels or sources. CURE: Replace UOC 7200

No. 5 **************************** Manual Number: 7602 ComPair COMMUNICATION ERRORS SYMPTOM: When using ComPair with these chassis and attempting to save changes to the NVM (memory) you may receive an error message: AN ERROR HAS OCCURRED DURING COMMUNICATION WITH THE SET-TIMEOUT CAUSE: This can occur if there is any IR input or keyboard input while the TV is in the ComPair mode (displayed "C"). The only input allowed is to turn on the TV after ComPair is

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Chassis: 19L8

connected and AC power applied to the TV. CURE: Exit ComPair program and remove AC power from the TV Start ComPair again and be cautious about any command inputs.

No. 6 **************************** Manual Number: 7602 ComPair WILL NOT SAVE SYMPTOM: When ComPair is connected to these some of these chassis the function; "Store in NVM" may not function. Error/Time out is displayed. POSSIBLE CAUSES/CURES: 1) There has been an IR or Keyboard command to the TV since the original turn on from standby mode with ComPair connected. 2) The I2C connector on the ComPair box is not seated fully. If either of these occurred close ComPair and start over. 3) The ComPair mode of the TV has not pulled pin7-7602 low (memory IC). If C is in top right corner of screen then clip lead pin 7-7602 to ground and repeat "Store in NVM". This should be successful. Pin 7 is "write enable" of NVM and must be low to write to memory. Do not leave low because stray data will write to memory and corrupt stored data.

No. 7 **************************** Manual Number: 7602 CRACK POP IN DBX STEREO MODELS Symptom: A small number of these chassis may have a cracking or popping in the sound At times it may be related to a specific volume control setting. Resolution: Replace SMD capacitors 2849 and 2850, using service code 3198 016 31020. These parts are located adjacent to pins 24 and 25 of 7831, the DBX stereo decoder IC. Applies To: 13L8, 14L8, 14RF50S3, 14RF50S399, 15PV1022, 19L8, 19PS50S121, 19PS50S122, 19PS50S125, 19PS50S199, 20LW202222, 20LW202225

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Chassis: 19L8

No. 8 **************************** Manual Number: 7602 F ON SCREEN, IN FACTORY MODE IN THE FOLLOWING TIP YOU MUST RELEASE THE ON-SET KEYBOARD AS SOON AS THE "F" DISAPPEARS (ABOUT 4 SECONDS). FAILURE TO RELEASE THE KEYBOARD WILL ALLOW THE TV TO RETURN TO FACTORY MODE. SYMPTOM: In Factory Mode with F in upper right corner of screen CURE: Press Volume UP and Channel DOWN for 5 seconds at on-set keyboard.

No. 9 **************************** Manual Number: 7602 Jack Panel Connectors INFORMATION: The following jacks and connectors are used in the K8/L8/M8/H8 chassis. When looking for a part number know function, location (front/side/rear) and number of connectors on the connector cluster. Front and Side use the same connectors. 2422 015 19364 2422 026 04637 2422 026 04742 2422 026 04747 2422 026 04826 2422 026 04926 2422 026 05026 2422 026 05106 2422 026 05184 2422 026 05211 3139 110 38951 Surround Speaker Jacks Front AV Jacks Mono Front AV Jacks Stereo Headphone Jack AV IO Jack Cluster-K8 S-Video Jacks * Side AV Stereo Jacks AV Stereo Jacks (12) AV Stereo Jacks (6) AV Stereo Jacks (9) M-Link Jack (J)

No. 10 **************************** Manual Number: 7602 LINES ON LEFT EDGE OF PICTURE SYMPTOM: Line down left edge of picture, worse on channel 5 using dipole. Will radiate to other sets that are on dipole nearby offending set. CAUSE: Oscillation in 7403 Forward Drive transistor.

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Chassis: 19L8

CURE: Add tack on capacitor from base to collector of 7403. Use: 3198 019 03990 39pf Or 3198 019 03390 33pf Both are NPO, 5% ceramic, 50 volt.

No. 11 **************************** Manual Number: 7602 LOCKUP, CORRUPT CLOSED CAPTION, MORE MODELS SYMPTOM: The TV will lock-up (not respond to remote) and/or display scrambled Closed Caption. Other unusual responses may occur. CLUE: Break AC supply to reset the micro will cure for short time. CURE: Replace 7200 UOC, the microprocessor. NEW MODELS INVOLVED: 14RF50 7200 UOC 20RF50 24RF50 9352 699 87557 9352 699 90557 9352 699 90557

No. 12 **************************** Manual Number: 7602 MODELS WITHOUT SERVICE MODES Models without Service Modes 14RF50 19PS50 20LW20 All versions Use special Factory Mode Remote 4835 310 57511 No. 13 **************************** Manual Number: 7602 REMOTE RANGE SYMPTOM: A small number of L8 chassis may show a lack of sensitivity of IR receiver. This may appear as limited range of remote operation. CURE: Replace capacitor 2691 in chassis section B-1 with Service Code 4835 124 47557. This is a 25 volt, 220 mfd lytic.

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Chassis: 19L8

No. 14 **************************** Manual Number: 7602 SLUGGISH RESPONSE/CORRUPT CLOSED CAPTION Any or all of the following. Sluggish remote response. Slow mute release. Slow channel change. Corrupt or scrambled Closed Caption. CLUE: May clear with AC break. CURE: IC 7200 (UOC) Signal/Micro Processor

No. 15 **************************** Manual Number: 7602 SOUND SCREECH SYMPTOM: Sound intermittently "screeches", very loudly. Especially noted with dipole (rabbit ears) or other weak signal conditions. CORRECTION: Replace the following SMD parts in section 6E, between the UOC (7200) and edge of board. 2227 use 1n2 (1.2 nf) capacitor 4822 122 32614 2228 use 330pf capacitor 4835 122 87032 3232 use 3k9 (3.9K ohms) resistor 4835 111 37254

No. 16 **************************** Manual Number: 7602 STEREO WITH VCR AND SET TOP BOX GENERAL INFORMATION: There is some misunderstanding about TV broadcast stereo and how it can be received by a TV set. VCR TO TV ANTENNA INPUT: When the VCR is connected to the antenna (coax) connector on the TV, stereo can only be received by the TV if the VCR is in the "TV" mode. This is the mode that allows the TV to use it's channel selector. In the TV mode of the VCR the station signal

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Chassis: 19L8

is bypassed around the VCR circuits and the original (antenna or cable) signal goes to the TV channel selector. In this mode of operation (TV selects channels) the TV will receive stereo if the station is transmitting stereo. If the VCR is set to the "VCR" mode the VCR selects the TV channel and NO stereo is passed to the TV antenna (coax) connector. The process of the TV signal in the VCR erases the stereo portion of the signal when the VCR is in the "VCR" mode. Playing a stereo tape on a stereo VCR will not deliver stereo to the TV antenna (coax) connector, only to the A/V jacks. TO AUDIO/VIDEO JACKS ON TV: TV broadcast stereo may be heard by the using TV A/V jacks if two conditions are met. 1) The VCR has a stereo decoder built in. Only a few older VCR's have this. This decoder is called MCTS (Multi Channel Television Sound) or BTSC (Broadcast Television Systems Committee). 2) The TV (or cable) channel selected is transmitting stereo. SET TOP CABLE BOX These will not send a stereo signal to the antenna (coax) connector of the TV set. If (rare case) the set top cable box has A/V output it might be able to supply video and stereo audio to the TV A/V jacks. Check with the cable company. SET TOP HIGH DEFINITION BOX These HD boxes can only supply stereo via A/V cables to the TV, not by the TV antenna (coax) connector. SATELLITE RECEIVERS A satellite receiver can only supply stereo via A/V cables to the TV, not by the TV antenna (coax) connector.

No. 17 **************************** Manual Number: 7602 V-CHIP BLOCK IN FACTORY MODE INFORMATION: There are reports of the last 2 years (2001/2002) of Direct View Color TV displaying a V-Chip block when entering Factory Mode . This is reported to happen at random intervals if Factory Mode is entered by the Factory Mode Remote while viewing a TV program. The random factor comes from the fact that while programs are

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Chassis: 19L8

rated in many cases, the commercials are not. When entering Factory Mode all v-chip ratings are turned on. This is to allow a quick check in the factory process. At exit of Factory Mode all settings are turned off. For stable and visible display use a pattern generator. It will not give a V-Chip block.

No. 18 **************************** Manual Number: 7602 V-CHIP BLOCKING BACK DOOR ENTRY INFORMATION: The entry code for AutoLock (Magnavox SmartLock) to reset the password code number is 0711 twice. How ever if 0711 is entered the response the first time is INCORRECT. If the word INCORRECT is allowed to time out then the second entry of 0711 is not accepted. To avoid this response when the first 0711 responds with INCORRECT at once enter 0711 a second time. It will then ask for the new code. Enter the new code and confirm it (2nd time) and proceed to set the blocking as desired.

No. 19 **************************** Manual Number: 7602 VERTICAL SLOPE CHANGE WITH WARM UP SYMPTOM: Vertical size or linearity change with warm up. CURE: Replace 2244 with part number 2222 370 75104. A 100 nf, 63 volt, 10% Metal Polyester.

Philips Consumer Electronics Technical Service Data
Service and Quality Service Publications Dept. One Philips Drive P.O. Box 14810 Knoxville, TN 37914

Manual 7602
Model no.: 20LW202222 First Publish: 5-10-2001 Rev. Date: 10-16-2002 Print Date: 19/11/2005

Parts List

REFER TO SAFETY GUIDELINES SAFETY NOTICE: ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES. CAUTION: USE A SEPARATE ISOLATION TRANSFORMER FOR THIS UNIT WHEN SERVICING
© Philips Electronics North America Corporation Visit our World Wide Web Site at http://www.forceonline.com

20LW202222 - Manual no. 7602
Main Chassis Main Chassis 0139 IC-SPRING 7402 . . . . . . . . . . . . 0040 3 Pin Cinch Cover. . . . . . . . . . . 0122 Heatsink . . . . . . . . . . . . . . . 0123 Audio Heatsink . . . . . . . . . . . . 0124 Heatsink . . . . . . . . . . . . . . . 0127 Socket Fuse. . . . . . . . . . . . . . 0136 IC-Spring. . . . . . . . . . . . . . . 0137 Spring . . . . . . . . . . . . . . . . 0138 IC-Spring. . . . . . . . . . . . . . . 0139 Spring for Bracket . . . . . . . . . . 0152 Cable, 6 Pin 400mm . . . . . . . . . . 0153 Cable, 3 Pin 400mm . . . . . . . . . . 0211 Connector, 2 Pin . . . . . . . . . . . 0212 Connector, 2 Pin . . . . . . . . . . . 0217 Connector, 3 Pin . . . . . . . . . . . 0218 Socket, Cinch 3 Pin. . . . . . . . . . 0220 Connector, 3 Pin . . . . . . . . . . . 0221 Connector, 4 Pin . . . . . . . . . . . 0222 Connector, 2 Pin . . . . . . . . . . . 0223 Socket, Cinch, 6 Pin . . . . . . . . . 0225 Socket, MDIN, 10 Pin . . . . . . . . . 0232 Socket, Phone, 1 Pin . . . . . . . . . 0243 Connector, 6 Pin . . . . . . . . . . . 0244 Connector, 3 Pin . . . . . . . . . . . 0245 Connector, 6 Pin . . . . . . . . . . . 0246 Connector, 5 Pin . . . . . . . . . . . 0254 Socket, CRT, 9 Pin, M-Neck . . . . . . 1000 Tuner, V+U, PLL . . . . . . . . . . . 1002 S.A.W. Filter 45MHZ75 . . . . . . . . 1200 Filter, Ceramic, 4MHz5 . . . . . . . . S 1500 Fuse, 4A, 250V, IEC. . . . . . . . . . S 1515 Relay, 12V, 5A G5PA-1. . . . . . . . 1600 Switch, Tactile. . . . . . . . . . . . 1601 Switch, Tactile. . . . . . . . . . . . 1602 Switch, Tactile. . . . . . . . . . . . 1603 Switch, Tactile. . . . . . . . . . . . 1606 Switch, Tactile. . . . . . . . . . . . 1660 Crystal, 12MHz000 . . . . . . . . . . 1831 Resonator, Crystal, 18MHZ432 12 Pin . 2004 Cap, 47n, 10%, 25v, Ceramic. . . . . . 2005 Cap, 10u, 20%, 50v, Electrolytic . . . 2006 Cap, 470u, 20%, 16v, Electrolytic. . . 2007 Cap, 100n, +80/-20%, 25v, Ceramic. . . 2008 Cap, 100u, 20%, 25v, Electrolytic. . . 2009 Cap, 22n, 10%, 50v, Ceramic. . . . . . 2101 Cap, 470n, +80/-20%, 16v, Ceramic. . . 2102 Cap, 22p, 5%, 50v, Ceramic . . . . . . 2103 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2104 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2105 Cap, 10u, 20%, 50v, Electrolytic . . . 2106 Cap, 10u, 20%, 50v, Electrolytic . . . 2122 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2123 Cap, 2u2, +80/-20%, 10v, Ceramic . . . 2124 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2125 Cap, 2u2, +80/-20%, 10v, Ceramic . . . 2135 Cap, 22p, 5%, 50v, Ceramic . . . . . . 2136 Cap, 22p, 5%, 50v, Ceramic . . . . . . 2141 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2181 Cap, 22p, 5%, 50v, Ceramic . . . . . . 2182 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2183 Cap, 330p, 5%, 50v, Ceramic. . . . . . 2184 Cap, 2u2, +80/-20%, 10v, Ceramic . . . 2202 Cap, 100n, +80/-20%, 25v, Ceramic. . . 2203 Cap, 100n, +80/-20%, 25v, Ceramic. . . 2204 Cap, 100n, +80/-20%, 25v, Ceramic. . . 2205 Cap, 220n, +80/-20%, 25v, Ceramic. . . 2208 Cap, 100n, +80/-20%, 25v, Ceramic. . . 2209 Cap, 4u7, 20%, 50v, Electrolytic . . . 2210 Cap, 470n, 20%, 50v, Electrolytic. . . 2211 Cap, 470n, +80/-20%, 16v, Ceramic. . . 2216 Cap, 470u, 20%, 16v, Electrolytic. . . 2217 Cap, 22n, 10%, 50v, Ceramic. . . . . . 2219 Cap, 220n, +80/-20%, 25v, Ceramic. . . 2220 Cap, 470n, 10%, 50v, Polyester . . . . 2221 Cap, 22n, +80/-20%, 50v, Ceramic . . . 2233 Cap, 820p, 5%, 50v, Ceramic. . . . . . 2241 Cap, 1n5, 10%, 50v, Ceramic. . . . . . 2242 Cap, 1u, +80/-20%, 16v, Ceramic. . . . 2243 Cap, 2n2, 10%, 50v, Ceramic. . . . . . 2244 Cap, 100n, 10%, 63v, Metalized Polyeste 2245 Cap, 220n, +80/-20%, 25v, Ceramic. . . 2247 Cap, 470u, 20%, 16v, Electrolytic. . . 2248 Cap, 22n, 10%, 50v, Ceramic. . . . . . 2249 Cap, 22n, 10%, 50v, Ceramic. . . . . . 2250 Cap, 2u2, 20%, 50v, Electrolytic . . . 2252 Cap, 1n, 5%, 50v, Ceramic. . . . . . . 2253 Cap, 1n, 5%, 50v, Ceramic. . . . . . . 2254 Cap, 100p, 5%, 50v, Ceramic. . . . . . 2313 Cap, 220p, 5%, 50v, Ceramic. . . . . . 2323 Cap, 390p, 5%, 50v, Ceramic. . . . . . S = Safety Part 2331 2341 2342 2343 2401 2402 2406 2407 2408 2409 2410 2411 2412 2413 2414 2416 2417 2418 2419 2420 2421 2422 2423 2471 2472 2473 2475 2476 2477 2500 2501 2502 2503 2506 2508 S 2515 2520 2521 2522 2523 2525 2526 2527 2540 2560 2561 2562 2563 2564 2565 2566 2567 2568 2569 2580 2601 2602 2606 2607 2608 2609 2611 2612 2613 2615 2618 2619 2691 2801 2802 2803 2804 2805 2831 2832 2833 2834 2835 2836 2837 2838 2839 2840 2841 2842 2843 2844 2845 2846 2849 Cap, 390p, 5%, 50v, Ceramic. . . . . . Cap, 2n2, 10%, 1000v, Ceramic. . . . . Cap, 47n, 10%, 250v, Metalized Polyeste Cap, 47n, 10%, 250v, Metalized Polyeste Cap, 680p, 10%, 50v, Ceramic . . . . . Cap, 820n, 5%, 250v, Metalized Polyprop ylene. . . . . . . . . . . . . . . . . Cap, 330p, 5%, 50v, Ceramic. . . . . . Cap, 10n, 5%, 1600v, Polypropylene . . Cap, 22n, +80/-20%, 50v, Ceramic . . . Cap, 47u, 20%, 160v, Electrolytic. . . Cap, 470u, 20%, 16v, Electrolytic. . . Cap, 47u, 20%, 25v, Electrolytic . . . Cap, 33n, 10%, 100v, Polyester . . . . Cap, 10u, 20%, 250v, Electrolytic. . . Cap, 1000u, 20%, 16v, Electrolytic . . Cap, 820p, 10%, 2000v, Ceramic . . . . Cap, 1000u, 20%, 16v, Electrolytic . . Cap, 10n, 10%, 50v, Ceramic. . . . . . Cap, 1u, 20%, 50v, Electrolytic. . . . Cap, 1u, 20%, 50v, Electrolytic. . . . Cap, 47n, +80/-20%, 50v, Ceramic . . . Cap, 470u, 20%, 16v, Electrolytic. . . Cap, 10u, 20%, 100v, Electrolytic. . . Cap, 100n, 10%, 50v, Polyester . . . . Cap, 100n, 10%, 50v, Polyester . . . . Cap, 100u, 20%, 50v, Electrolytic. . . Cap, 470p, 5%, 50v, Ceramic. . . . . . Cap, 220n, 10%, 50v, Polyester . . . . Cap, 470p, 5%, 50v, Ceramic. . . . . . Cap, 470n, 20%, 275v, Metalized Polypro pylene . . . . . . . . . . . . . . . . Cap, 2n2, 10%, 1000v, Ceramic. . . . . Cap, 2n2, 10%, 1000v, Ceramic. . . . . Cap, 220u, 20%, 200v, Electrolytic . . Cap, 2n2, 10%, 1000v, Ceramic. . . . . Cap, 470p, 10%, 1000v, Ceramic . . . . Cap, 1n5, 20%, v, Ceramic. . . . . . . Cap, 100n, 10%, 16v, Ceramic . . . . . Cap, 22u, 20%, 50v, Electrolytic . . . Cap, 100n, 10%, 16v, Ceramic . . . . . Cap, 1n5, 10%, 2000v, Ceramic. . . . . Cap, 470p, 10%, 50v, Ceramic . . . . . Cap, 1n, 10%, 50v, Ceramic . . . . . . Cap, 470p, 10%, 50v, Ceramic . . . . . Cap, 15n, 10%, 50v, Ceramic. . . . . . Cap, 1n, 10%, 1000v, Ceramic . . . . . Cap, 47u, 20%, 160v, Electrolytic. . . Cap, 1n, 10%, 50v, Ceramic . . . . . . Cap, 100n, 10%, 50v, Polyester . . . . Cap, 2u2, 20%, 16v, Electrolytic . . . Cap, 470p, 10%, 1000v, Ceramic . . . . Cap, 47u, 20%, 25v, Electrolytic . . . Cap, 47u, 20%, 25v, Electrolytic . . . Cap, 1u, 20%, 50v, Electrolytic. . . . Cap, 470p, 10%, 50v, Ceramic . . . . . Cap, 47u, 20%, 25v, Electrolytic . . . Cap, 220n, +80/-20%, 25v, Ceramic. . . Cap, 100p, 5%, 50v, Ceramic. . . . . . Cap, 1n, 5%, 50v, Ceramic. . . . . . . Cap, 33p, 5%, 50v, Ceramic . . . . . . Cap, 1u, +80/-20%, 16v, Ceramic. . . . Cap, 33p, 5%, 50v, Ceramic . . . . . . Cap, 1u, +80/-20%, 16v, Ceramic. . . . Cap, 68p, 5%, 50v, Ceramic . . . . . . Cap, 68p, 5%, 50v, Ceramic . . . . . . Cap, 1n, 5%, 50v, Ceramic. . . . . . . Cap, 1u, +80/-20%, 16v, Ceramic. . . . Cap, 1u, +80/-20%, 16v, Ceramic. . . . Cap, 100u, 20%, 25v, Electrolytic. . . Cap, 22u, 20%, 50v, Electrolytic . . . Cap, 220n, +80/-20%, 25v, Ceramic. . . Cap, 2u2, +80/-20%, 10v, Ceramic . . . Cap, 4u7, +80/-20%, 10v, Ceramic . . . Cap, 4u7, +80/-20%, 10v, Ceramic . . . Cap, 1p, 25%, 50v, Ceramic . . . . . . Cap, 1p, 25%, 50v, Ceramic . . . . . . Cap, 47p, 5%, 50v, Ceramic . . . . . . Cap, 470p, 5%, 50v, Ceramic. . . . . . Cap, 220p, 5%, 50v, Ceramic. . . . . . Cap, 1n5, 10%, 50v, Ceramic. . . . . . Cap, 4u7, 20%, 50v, Electrolytic . . . Cap, 47p, 5%, 50v, Ceramic . . . . . . Cap, 47p, 5%, 50v, Ceramic . . . . . . Cap, 100n, +80/-20%, 25v, Ceramic. . . Cap, 10u, 20%, 50v, Electrolytic . . . Cap, 100n, +80/-20%, 25v, Ceramic. . . Cap, 10u, 20%, 50v, Electrolytic . . . Cap, 10u, 20%, 50v, Electrolytic . . . Cap, 100n, +80/-20%, 25v, Ceramic. . . Cap, 100u, 20%, 25v, Electrolytic. . . Cap, 1n, 5%, 50v, Ceramic. . . . . . .

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