Philips 19LT010L/35 Manuel utilisateur

Philips Consumer Electronics

Technical Service Data

Service and Quality

Service Publications Dept.

One Philips Drive

P.O. Box 14810

Knoxville, TN 37914

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

Manual 7628

Model no.: 19LT010L/35

First Publish: 12760 S8

Rev. Date: 2002-06-06

Print Date: 13/07/2007

Pg. SCHEMATIC DIAGRAMS AND PC BOARDS

1. Chassis Overview

2. Power Supply [A1]

3. Line Deflection [A2]

4. Frame Deflection [A3]

5. Tuner IF [A4]

6. Video IF + Sound IF [A5]

7. Synchronisation [A6]

8. Control [A7]

9. Audio Amplifier + Mono Sound Processing [A8]

10. NICAM + 2 CS + BTSC (Stereo/SAP) Decoder [A9]

11. Audio/Video Source Switching [A10]

12. Audio - BTSC Stereo Decoder (Economic) [A11]

13. Front I/O + Front Control + Headphone [A12]

14. Rear I/O Cinch [A13]

15. CRT Panel [B]

16. SP/LS Event Timer Panel Schematic

17. Side AV Panel [E]

18. Side AV Panel + Headphone [E1]

19. EPS Panel Schematic

20. Card Interface Schematic

21. SP/LS Interface Schematic

22. Healthcare Panel Schematic

23. Layout Mono Carrier Non DBX (component side)

24. Layout Mono Carrier Non DBX (copper side)

25. Layout Mono Carrier DBX (component side)

26. Layout Mono Carrier DBX (copper side)

27. Layout CRT Panel (component side)

28. Layout CRT Panel (copper side)

29. Layout SP/LS Event Timer (component side)

30. Layout SP/LS Event Timer (copper side)

31. Layout Side AV Panel

32. Layout Side AV Panel + Headphone

33. Layout ESP Panel (component side only)

34. Layout Card Interface Panel (component side)

35. Layout Card Interface Panel (copper side)

36. Layout Healthcare Panel (component side)

37. Layout Healthcare Panel (coopper side)

Philips Consumer Electronics

Technical Service Data

Service and Quality

Service Publications Dept.

One Philips Drive

P.O. Box 14810

Knoxville, TN 37914

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

Manual 7628

Model no.: 19LT010L/35

First Publish: 12760 S8

Rev. Date: 2002-06-06

Print Date: 13/07/2007

Mechanical Diagrams

MAIN CABINET EXPLODED VIEW Page: 1 of 1

Philips Consumer Electronics

Technical Service Data

Service and Quality

Service Publications Dept.

One Philips Drive

P.O. Box 14810

Knoxville, TN 37914

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

Manual 7628

Model no.: 19LT010L/35

First Publish: 12760 S8

Rev. Date: 2002-06-06

Print Date: 13/07/2007

Electrical Adjustments

Alignments - S8 Chassis

Index of this chapter:

1. General Alignment Conditions

2. Commercial Models SDAM Entry

3. Hardware Alignments

4. Software Alignments and Settings

Note: The Service Default Alignment Mode (SDAM) is described in the "Service Modes,

Error Codes and Fault Finding" section. SDAM menu navigation is performed by using

the MENU UP, MENU DOWN, MENU LEFT, and MENU RIGHT keys of the remote

control transmitter.

General Alignment Conditions

Perform all electrical adjustments under the following conditions:

•AC voltage and frequency: 110V (± 10 %), 60Hz (± 5 %).

•Connect the television set to the AC power via an isolation transformer.

•Allow the television set to warm up for approximately20 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

heatsinks as ground.

•Test probe: Ri > 10MO; Ci < 2.5pF.

•Use an isolated trimmer/screwdriver to perform the alignments.

Service Default Alignment Mode (SDAM) Entry for

Commercial Models

Note: For commercial models, a master setup remote control is required in order to

access the Service Default Alignment Mode (SDAM).

1. Use the master setup remote control to identify the television’s operational mode

(either “consumer” or “commercial”). Place the master setup remote control in

setup mode by pressing the TV SETUP key.

2. Press the RECALL key. Information similar to the following will be displayed.

Status Item Status Data Meaning

SYSTEM STATUS

(L011TV-US4PV) Information title

MODE COMMERCIAL/CONSUMER Operational mode

CHANNEL CHANNEL, INPUT Currently tuned channel/input

DCM OFF/ON Data Comm. Module online/offline

CODES 209 222 1 33 Internal data for factory/service use

SIGNAL TUNED/NOT TUNED Valid signal present/absent

OP HRS 0031h Number of hours set has operated (hex)

ERRORS 0 0 0 0 0 Internal data for factory/service use

VERSION 3.3 Microprocessor software version

3. To change the television’s mode, ensure the master setup remote control is in

setup mode, then press the 0-2-4-9-9-5-MENU keys in order, without permitting

the display to time out while entering the key sequence.

ote: If the operational mode is changed, the television must be turned off and then back on to

complete the mode change. When the television is in consumer mode, do not use the master setup

remote control to activate commercial mode features.

4. When the television is in commercial mode, the Institutional Television Menu may

be accessed by pressing the MENU button. Though the specific items in the menu

will vary, information similar to the following will be displayed.

Menu Item Settings / Options

(MENU TITLE) SETUP MENU / MAIN MENU

LANGUAGE ENGLISH / ESPANOL / FRANCAIS

CHANNEL INSTALL >

CABLE TUNING ON / OFF

BRIGHTNESS - - - | - - - 31

COLOR - - - | - - - 31

CONTRAST - - - | - - - 31

SHARPNESS - - - | - - - 31

TINT - - - | | - - - 0

NOISE REDUCTION ON / OFF

SOUND MODE MONO / STEREO

SAP OFF / NO SAP / ON

AUDIO OUT FIXED / VARIABLE

BALANCE - - - | - - - 0

TREBLE - - - | - - - 31

BASS - - - | - - - 31

INCRED STEREO ON / OFF

AVL ON / OFF

VOLUME BAR ON / OFF

MIN VOLUME | - - - - - - 0

MAX VOLUME - - - - - - | 63

SWITCH ON VOLUME - - - | - - - 31

SWITCH ON CHANNEL CH. 1-125 / FRONT / AUX / S-VIDEO / CVI / STANDARD

POWER ON STANDARD / FORCED

CHANNEL DISPLAY NUMBER / LABEL / ALL / NONE

KEYBOARD LOCK ON / OFF

ESP 1 – 99 / OFF

AUDIO / VIDEO MUTE OFF / BLACK / BLUE

EXT AUD / VID OUT ON / OFF

WELCOME MESSAGE >

CHANNEL GUIDE POWER ON / OFF / ON

REMINDER ON / OFF

3 DIGIT ENTRY ON / OFF

A/CH A/V SWITCH ON – OFF

CC OFF / CC-1 / CC-2 / CC ON MUTE

SAVE CC ON / OFF

V-CHIP MENU ITEM ON / OFF

SAVE V-CHIP ON / OFF

V-CHIP SETUP >

SLEEPTIMER OFF / 15 / 30 / 45 / 60 / 90 / 120 / 180 / 240

EXIT >

5. After making changes to the settings, the EXIT option may be used to leave the

Institutional Television Menu.

Hardware Alignments

Figure: Top view LSP

Vg2 Adjustment

1. Enter SDAM:

•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.

2. Use the MENU UP/DOWN keys to highlight the WHITE TONE sub menu.

3. Press the MENU LEFT or MENU RIGHT key to enter the WHITE TONE sub

menu.

4. In the WHITE TONE sub menu, press the MENU UP/DOWN keys to select

NORMAL RED, NORMAL GREEN, or NORMAL BLUE.

5. Use the MENU LEFT/RIGHT keys to set the values of NORMAL RED, NORMAL

GREEN and NORMAL BLUE to 40.

6. Press the MENU button twice to enter the normal user menu.

7. In the normal user menu, use the MENU UP/DOWN keys to highlight the

PICTURE sub menu (if necessary).

8. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.

9. Use the MENU UP/DOWN keys to select PICTURE. Be sure to record the

current value of PICTURE.

10. Use the MENU LEFT/RIGHT keys to set the value of PICTURE to zero.

11. Use the MENU UP/DOWN keys to select BRIGHTNESS. Be sure to record the

current value of BRIGHTNESS.

12. Use the MENU LEFT/RIGHT keys to set the value of BRIGHTNESS to minimum

(OSD just visible in a dark room).

13. Press the MENU button twice to return to the top level SDAM menu.

14. Press the STATUS/EXIT button to hide the SDAM onscreen display.

15. Connect the RF output of a video pattern generator to the antenna input.

16. Input a "black picture" test pattern to the television set.

17. Set the oscilloscope to 50 V/div and the time base to 0.2 milliseconds (external

triggering on the vertical pulse).

18. Ground the scope at the CRT panel and connect a 10:1 probe to one of the

cathodes of the picture tube socket (see schematic diagram B).

19. Measure the cut off pulse during first full line after the frame blanking (see Fig.

8-2). 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.

20. Select the cathode with the highest DC voltage for the alignment. Adjust the V

Cut-Off of this gun with the SCREEN potentiometer(see Fig. 8-1) on the LOT to

the correct value (see table below).

21. Press the STATUS/EXIT button to display the SDAM onscreen display.

22. Press the MENU button to enter the normal user menu.

23. In the normal user menu, use the MENU UP/DOWN keys to highlight the

PICTURE sub menu (if necessary).

24. Press the MENU LEFT/RIGHT keys to enter the PICTURE sub menu.

25. Use the MENU UP/DOWN keys to select PICTURE.

26. Use the MENU LEFT/RIGHT keys to reset the value of PICTURE to the original

value.

27. Use the MENU UP/DOWN keys to select BRIGHTNESS.

28. Use the MENU LEFT/RIGHT keys to reset the value of BRIGHTNESS to the

original value.

29. Press the MENU button twice to return to the top level SDAM menu.

30. Use the POWER button on the remote control transmitter or the POWER button

on the television set to turn off the television set. This will save the changes

made in SDAM.

Figure: Waveform Vg2 alignment

V Cut-Off Values

Screen Size Cut-off Voltage

13V/14", 14RF/15RF, 17",19V/20", 21" +135V +/- 4V

Focusing

1. Connect the RF output of a video pattern generator to the antenna input.

2. Input a circle or crosshatch test pattern to the television set.

3. Press the AUTO PICTURE button on the remote control transmitter repeatedly to

choose PERSONAL or MOVIES picture mode.

4. Adjust the FOCUS potentiometer (see Fig. 8-1)until the vertical lines near the left

and right sides of the screen, and near the horizontal center of the screen, are at

minimum width without visible haze.

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