Copyright 2007 Philips Consumer Electronics B.V. Eindhoven, The Netherlands.
All rights reserved. No part of this publication may be reproduced, stored in a
retrieval system or transmitted, in any form or by any means, electronic,
mechanical, photocopying, or otherwise without the prior permission of Philips.
Published by JY 0771 BU CD Customer ServicePrinted in the NetherlandsSubject to modificationEN 3122 785 17630
Page 2
EN 2TC8.1L CA1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Index of this chapter:
1.1 Technical Specifications
1.2 Side and Rear Connections
1.3 Chassis Overview
Notes:
•Figures can deviate due to the different set executions.
•Specifications are indicative (subject to change).
1.1Technical Specifications
1.1.1Vision
Display type: CRT, Pure Flat
Screen size: 21” (55 cm), 4:3
Tuning system: PLL
Presets/channels: 181
Tuner bands: Full-Cable
TV color systems: NTSC-M (3.58+4.5)
Video playback: NTSC, PAL
Aerial input: 75 ohm, IEC-type
1.1.2Sound
Sound systems: Stereo BTSC
: Stereo SAP
Maximum power (W
1.1.3Miscellaneous
Power supply:
- Mains voltage (V
- Mains frequency (Hz): 50 / 60
Ambient conditions:
- Temperature range (°C): +5 to +40
- Maximum humidity: 90% R.H.
):2 × 5
RMS
): 100 - 240
AC
1.2Side and Rear Connections
Figure 1-1 Rear and Side I/O connections
Note: The following connector color abbreviations are used
(acc. to DIN/IEC 757): Bk= Black, Bu= Blue, Gn= Green, Gy=
Grey, Rd= Red, Wh= White, and Ye= Yellow.
1.2.1Rear I/O Connections
Cinch: Video YPbPr - In
Gn - Video Y 1 V
Bu - Video Pb 0.7 V
Rd - Video Pr 0.7 V
Cinch: Video CVBS - In, Audio - In
Ye - Video (CVBS) 1 V_pp / 75 ohm jq
Wh - Audio - L 0.5 V_rms / 10 kohm jq
Rd - Audio - R 0.5 V_rms / 10 kohm jq
Cinch: Video CVBS - Out, Audio - Out
Ye - Video (CVBS) 1 V_pp / 75 ohm kq
Wh - Audio - L 0.5 V_rms / 10 kohm kq
Rd - Audio - R 0.5 V_rms / 10 kohm kq
/ 75 ohm jq
PP
/ 75 ohm jq
PP
/ 75 ohm jq
PP
OPTIONAL
H_17630_014.eps
271107
Power consumption (values are indicative)
- Normal operation (W): ≈ 84 (/85)
: ≈ 74 (/44)
- Stand-by (W): < 7
Dimensions (W × H × D mm): 594 × 458 × 486
Weight (kg): 21.6
1.3Chassis Overview
CRT PANEL
B
SIDE AV PANEL +
D
HEADPHONE
Aerial In
- IEC-type Coax, 75 ohm D
1.2.2Side I/O Connections (optional)
AV In
Ye - Video (CVBS) 1 V_pp / 75 ohm jq
Wh - Audio - L 0.5 V_rms / 10 kohm jq
Rd - Audio - R 0.5 V_rms / 10 kohm jq
MONO CARRIER
BTSC PANEL
BTSC
H_17130_039.eps
291107
A
Figure 1-2 PWB/CBA locations (depending on model)
Page 3
Safety Instructions, Warnings, and Notes
2.Safety Instructions, Warnings, and Notes
EN 3TC8.1L CA2.
Index of this chapter:
2.1 Safety Instructions
2.2 Maintenance Instructions
2.3 Warnings
2.4 Notes
2.1Safety Instructions
Safety regulations require the following during a repair:
•Connect the set to the Mains/AC Power via an isolation
transformer (> 800 VA).
•Replace safety components, indicated by the symbol h,
only by components identical to the original ones. Any
other component substitution (other than original type) may
increase risk of fire or electrical shock hazard.
•Wear safety goggles when you replace the CRT.
Safety regulations require that after a repair, the set must be
returned in its original condition. Pay in particular attention to
the following points:
•General repair instruction: as a strict precaution, we advise
you to re-solder the solder connections through which the
horizontal deflection current flows. In particular this is valid
for the:
1. Pins of the line output transformer (LOT).
2. Fly-back capacitor(s).
3. S-correction capacitor(s).
4. Line output transistor.
5. Pins of the connector with wires to the deflection coil.
6. Other components through which the deflection current
flows.
Note: This re-soldering is advised to prevent bad connections
due to metal fatigue in solder connections, and is therefore only
necessary for television sets more than two years old.
•Route the wire trees and EHT cable correctly and secure
them with the mounted cable clamps.
•Check the insulation of the Mains/AC Power lead for
external damage.
•Check the strain relief of the Mains/AC Power cord for
proper function, to prevent the cord from touching the CRT,
hot components, or heat sinks.
•Check the electrical DC resistance between the Mains/AC
Power plug and the secondary side (only for sets that have
a Mains/AC Power isolated power supply):
1. Unplug the Mains/AC Power cord and connect a wire
between the two pins of the Mains/AC Power plug.
2. Set the Mains/AC Power switch to the “on” position
(keep the Mains/AC Power cord unplugged!).
3. Measure the resistance value between the pins of the
Mains/AC Power plug and the metal shielding of the
tuner or the aerial connection on the set. The reading
should be between 4.5 Mohm and 12 Mohm.
4. Switch “off” the set, and remove the wire between the
two pins of the Mains/AC Power plug.
•Check the cabinet for defects, to prevent touching of any
inner parts by the customer.
2.2Maintenance Instructions
We recommend a maintenance inspection carried out by
qualified service personnel. The interval depends on the usage
conditions:
•When a customer uses the set under normal
circumstances, for example in a living room, the
recommended interval is three to five years.
•When a customer uses the set in an environment with
higher dust, grease, or moisture levels, for example in a
kitchen, the recommended interval is one year.
•The maintenance inspection includes the following actions:
1. Perform the “general repair instruction” noted above.
2. Clean the power supply and deflection circuitry on the
chassis.
3. Clean the picture tube panel and the neck of the picture
tube.
2.3Warnings
•In order to prevent damage to ICs and transistors, avoid all
high voltage flashovers. In order to prevent damage to the
picture tube, use the method shown in figure “Discharge
picture tube”, to discharge the picture tube. Use a high
voltage probe and a multi-meter (position V
until the meter reading is 0 V (after approx. 30 s).
V
Figure 2-1 Discharge picture tube
•All ICs and many other semiconductors are susceptible to
electrostatic discharges (ESD w). Careless handling
during repair can reduce life drastically. Make sure that,
during repair, you are connected with the same potential as
the mass of the set by a wristband with resistance. Keep
components and tools also at this same potential.
•Be careful during measurements in the high voltage
section.
•Never replace modules or other components while the unit
is switched “on”.
•When you align the set, use plastic rather than metal tools.
This will prevent any short circuits and prevents circuits
from becoming unstable.
2.4Notes
2.4.1General
•Measure the voltages and waveforms with regard to the
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry. The voltages and waveforms
shown in the diagrams are indicative. Measure them in the
Service Default Mode (see chapter 5) with a color bar
signal and stereo sound (L: 3 kHz, R: 1 kHz unless stated
otherwise) and picture carrier at 475.25 MHz for PAL, or
61.25 MHz for NTSC (channel 3).
•Where necessary, measure the waveforms and voltages
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in stand-by (F). These values are
indicated by means of the appropriate symbols.
•The semiconductors indicated in the circuit diagram and in
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
). Discharge
DC
E_06532_007.eps
250304
Page 4
EN 4TC8.1L CA3.
Directions for Use
2.4.2Schematic Notes
•All resistor values are in ohms, and the value multiplier is
often used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kohm).
•Resistor values with no multiplier may be indicated with
either an “E” or an “R” (e.g. 220E or 220R indicates 220
ohm).
•All capacitor values are given in micro-farads (μ= × 10
nano-farads (n= × 10
-9
), or pico-farads (p= × 10
•Capacitor values may also use the value multiplier as the
decimal point indication (e.g. 2p2 indicates 2.2 pF).
•An “asterisk” (*) indicates component usage varies. Refer
to the diversity tables for the correct values.
•The correct component values are listed in the Spare Parts
List. Therefore, always check this list when there is any
doubt.
2.4.3Lead-free Soldering
Due to lead-free technology some rules have to be respected
by the workshop during a repair:
•Use only lead-free soldering tin Philips SAC305 with order
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment. In general, use of solder paste within
workshops should be avoided because paste is not easy to
store and to handle.
•Use only adequate solder tools applicable for lead-free
soldering tin. The solder tool must be able:
– To reach a solder-tip temperature of at least 400°C.
– To stabilize the adjusted temperature at the solder-tip.
– To exchange solder-tips for different applications.
•Adjust your solder tool so that a temperature of around
360°C - 380°C is reached and stabilized at the solder joint.
Heating time of the solder-joint should not exceed ~ 4 sec.
Avoid temperatures above 400°C, otherwise wear-out of
tips will increase drastically and flux-fluid will be destroyed.
To avoid wear-out of tips, switch “off” unused equipment or
reduce heat.
•Mix of lead-free soldering tin/parts with leaded soldering
tin/parts is possible but PHILIPS recommends strongly to avoid mixed regimes. If this cannot be avoided, carefully
clear the solder-joint from old tin and re-solder with new tin.
2.4.4Alternative BOM identification
The third digit in the serial number (example:
BF2A0635000001) indicates the number of the alternative
-12
B.O.M. (Bill Of Materials) that has been used for producing the
specific TV set. In general, it is possible that the same TV
model on the market is produced with e.g. two different types
of displays, coming from two different suppliers. This will then
result in sets which have the same CTN (Commercial Type
Number; e.g. 28PW9515/12) but which have a different B.O.M.
number.
By looking at the third digit of the serial number, one can
-6
),
).
identify which B.O.M. is used for the TV set he is working with.
If the third digit of the serial number contains the number “1”
(example: BF1A063500001), then the TV set has been
manufactured according to B.O.M. number 1. If the third digit is
a “2” (example: BF2A0635000001), then the set has been
produced according to B.O.M. no. 2. This is important for
ordering the correct spare parts!
For the third digit, the numbers 1...9 and the characters A...Z
can be used, so in total: 9 plus 26= 35 different B.O.M.s can be
indicated by the third digit of the serial number.
Identification: The bottom line of a type plate gives a 14-digit
serial number. Digits 1 and 2 refer to the production center (e.g.
AG is Bruges), digit 3 refers to the B.O.M. code, digit 4 refers
to the Service version change code, digits 5 and 6 refer to the
production year, and digits 7 and 8 refer to production week (in
example below it is 2006 week 17). The 6 last digits contain the
serial number.
MODEL :
PROD.NO:
32PF9968/10
AG 1A0617 000001
MADE IN BELGIUM
220-240V 50/60Hz
~
VHF+S+H+UHF
BJ3.0E LA
S
128W
E_06532_024.eps
130606
Figure 2-2 Serial number (example)
2.4.5Practical 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 that are best avoided. Before reaching into a
powered TV set, it is best to test the high voltage insulation.
It is easy to do, and is a good service precaution.
3.Directions for Use
You can download this information from the following websites:
http://www.philips.com/support
http://www.p4c.philips.com
Page 5
4.Mechanical Instructions
Mechanical Instructions
EN 5TC8.1L CA4.
Index of this chapter:
4.1 Set Disassembly
4.2 Assy / Board Removal
4.3 Service Positions
4.4 Set Re-assembly
Note: Figures below can deviate slightly from the actual
situation, due to the different set executions.
4.1Set Disassembly
Follow the disassemble instructions in described order.
4.1.1Rear Cover Removal
Warning: disconnect the mains power cord before you remove
the rear cover.
1. Remove all the fixation screws of the rear cover [1] and [2].
2. Now, pull the rear cover backwards and remove it.
1
4.2Assy / Board Removal
Sometimes, it can be necessary to swap a complete assy or
Printed Wiring Board (PWB). How that can be done is
explained below.
1. First, disconnect the strain relief of the AC power cord [4].
2. Disconnect all the necessary cables [5].
3. To remove the Mono Carrier; release the clamps [6] and
slide the whole panel backwards [7] (= away from the
front).
4. Slide the panel away from the cabinet.
Mechanical Instructions
14
4.3Service Positions
Figure 4-6 Mono carrier removal [4/4]
H_17130_023.eps
240407
Figure 4-3 Mono carrier removal [1/4]
15
Figure 4-4 Mono carrier removal [2/4]
H_17130_025.ep
H_17130_026.eps
For easy measurements, you can use the following service
position.
4.3.1Service Position Mono Carrier
Removing cables and repositioning the panel
For better accessibility of the Mono Carrier, do the following
(see next figure):
1. If necessary, disconnect some cables, and move the panel
somewhat to the left. Then flip it 90 degrees with its
components towards the CRT.
16
Figure 4-5 Mono carrier removal [3/4]
16
H_17130_027.eps
H_17130_024.eps
240407
Figure 4-7 Service position Mono Carrier
17
4.4Set Re-assembly
To re-assemble the whole set, do all processes in reverse
order.
Be sure that, before the rear cover is mounted:
•The mains cord is positioned correctly in its guiding
brackets (make sure that the strain relief is replaced in its
correct position and that it will function correctly!).
•All wires/cables are returned in their original positions.
Page 7
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 7TC8.1L CA5.
Index of this chapter:
5.1 Service Modes
5.2 Error Codes
5.3 Fault Finding
5.1Service Modes
For an explanation of the Factory Mode, see chapter 8
“Alignments”.
5.2Error Codes
Not applicable for this chassis.
5.3Fault Finding
5.3.1No Picture, No Sound, No Raster, Fuse Broken
No Picture, no sound, no raster, Fuse Broken
Is D833+
(B+)
Shorted to
earth?
YES
Check
(B+)
C of Q402
NO
Is D of Q801
NO
Shorted to
to earth?
YES
Check
Q801
Figure 5-1 Flow chart “No Picture, No Sound, No Raster, Fuse Broken”.
Is D801-
D804
OK?
YES
Check
IC 801
NO
Replace
D801-D804
H_17130_010.eps
070507
Page 8
EN 8TC8.1L CA5.
5.3.2No Picture, No Sound, No Raster, B+ OK
No Picture, no sound, no raster, B+ OK
Service Modes, Error Codes, and Fault Finding
Check
5V supply
pin 9 of IC 201
OK?
No
Is IC201
Pin9 shorted to
earth ?
No
Check
+5V,+9V Circuit
Figure 5-2 Flow chart “No Picture, No Sound, No Raster, B+ OK”.
5.3.3No Picture, Raster and Sound OK
Yes
Check
H out waveform
Pin 13 of IC 201
OK?
Yes
Check
waveform
C of Q401
OK?
Yes
oNoN
Yes
Replace
IC 201
Replace
Q401or R401
No Picture, Raster & Sound OK
Check
waveform
C of Q402
OK?
No
Replace
Q402
H_17130_011.eps
070507
Check RGB O/P
Pin 49,50,51,52
of IC 201 OK?
Yes
Check
RGB drive O/P
Q501, Q502 &
Q503
No
Is Pin ,50,51,52
shorted to
earth?
No
Check
9 volt Supply
& Q208
Yes
Replace
IC 201
Figure 5-3 Flow chart “No Picture, Raster and Sound OK”.
H_17130_012.eps
070507
Page 9
5.3.4Picture OK, No Sound
Service Modes, Error Codes, and Fault Finding
Picture OK, No sound
EN 9TC8.1L CA5.
Check Vcc
Pin 13 of IC601
OK?
Yes
Check Vol
Pin 3 & Mute Pin10 of IC601 OK?
Yes
Check audio O/P
R & L of IC 601
OK?
No
Check audio I/P
R & L of IC 601
OK?
Yes
Replace
IC 601
No
Yes
R & L speaker
No
Pin31wave of
Check IF circuit
Figure 5-4 Flow chart “Picture OK, No Sound”.
Check +22v
Circuit
Check
Check
IC201 OK?
No
or Replace
IC201
NO
Check
Q624,Q625,Q093 is
OK?
Yes
Check
Pin 59 of IC 201
Yes
Check
BTSC
Module(IC1001)
OK?
Change the damage
component
or Replace BTSC Module
No
No
Change the
damaged
component
H_17630_015.eps
271107
5.3.5No Color
Local system
Colour
system is
Right?
No
Reset
To
Yes
Dose the TV
signal too
weak?
Check
Tuner Input
cable & antenna
Figure 5-5 Flow chart “No Color”.
No colour
YES
NO
Check
Pin 6 & 7 of
IC 201 OK?
YES
Check
Pin 47 of IC
201
NO
Check
X001, C021
& C022
H_17130_014.eps
070507
Page 10
EN 10TC8.1L CA5.
5.3.6One Horizontal Line
Service Modes, Error Codes, and Fault Finding
One horizontal line
Check
Deflection yoke
No
Replace
Yoke coil
Terminal OK?
Yes
Check
+24v supply
Pin 2 of IC 301
OK?
No
Check
R405 (Fuse)
D402
Yes
Check
V output
Pin 5 of IC 301
OK?
No
Check
V input
Pin 1 of IC 301
OK?
Yes
Check
R314, C301,
R317,R336, C309
Figure 5-6 Flow chart “One Horizontal Line”.
Check
V output
Pin 16 of IC 201
No
H_17130_015.eps
070507
Page 11
5.3.7Some Waveforms:
Figure 5-7 FBP pin 12 of IC201
Service Modes, Error Codes, and Fault Finding
H_17130_016.eps
240407
Figure 5-10 Q815 drain when stand-by
EN 11TC8.1L CA5.
H_17130_021.eps
240407
Figure 5-8 H_out pin 13 of IC201
Figure 5-9 Q402 C
H_17130_017.eps
240407
H_17130_020.eps
240407
Figure 5-11 Q815 drain
H_17130_022.eps
240407
Page 12
EN 12TC8.1L CA5.
Personal Notes:
Service Modes, Error Codes, and Fault Finding
E_06532_012.eps
131004
Page 13
Block Diagrams, Test Point Overview, and Waveforms
6.Block Diagrams, Test Point Overview, and Waveforms
Block Diagram Mono Carrier
Q815 IC801
110 - 240V~
D801—D804
TEA1506
Power
13TC8.1L CA6.
112V
T803
22V
Transformer
12V
Optical coupling
Video Amp.
Tuner
TU101
Signal Process
IF AMP
Q101
E2PROM
IC001
KEY
IR001
AGC
SAW
F1859
Tosh i ba
8891\8893
IC201
R/G/B
V.out
H.out
SIF
CRT Board
V. A m p .
IC301
H.Drive AMP
Q401 Q402
MSP 3425
IC1001
FBT
T402
Audio Amp.
IC601
CRT R/G/B
EHT
FOCUS
SCREEN
175V, 24V
Sensor
Interface: AV1;AV2;YUV;AV-Out
Speaker
H_17630_001.eps
291107
Page 14
Circuit Diagrams and PWB Layouts
7.Circuit Diagrams and PWB Layouts
Mono Carrier
MONO CARRIER
AA
14TC8.1L CA7.
40-TB59PH-MAE1XG
H_17630_002.eps
201107
Page 15
Circuit Diagrams and PWB Layouts
Layout Mono Carrier (Top Side)
15TC8.1L CA7.
40-TB59PH-MAE1XG
H_17630_003.eps
201107
Page 16
Circuit Diagrams and PWB Layouts
Layout Mono Carrier (Bottom Side)
16TC8.1L CA7.
40-TB59PH-MAE1XG
H_17630_004.eps
221107
Page 17
Circuit Diagrams and PWB Layouts
17TC8.1L CA7.
CRT Panel
BB
CRT PANEL
Layout CRT Panel (Top Side)
40-TB93PH-MAF1XG
H_17630_005.eps
201107
40-TB93PH-MAF1XG
H_17630_006.eps
201107
Page 18
Circuit Diagrams and PWB Layouts
18TC8.1L CA7.
BTSC Panel
BTSCBTSC
BTSC PANEL
Layout BTSC Panel (Top Side)
40-TB59PH-MPC1XG
H_17630_005.eps
201107
40-TB59PH-MPC1XG
Layout BTSC Panel (Bottom Side)
H_17630_009.eps
201107
40-TB59PH-MPC1XG
H_17630_010.eps
201107
Page 19
Circuit Diagrams and PWB Layouts
Side AV & I/O Panel
19TC8.1L CA7.
SIDE AV I/O PANEL
DD
Personal Notes:
40-TB93PH-SIC1XG
Layout Side AV & I/O Panel (Top Side)
H_17630_012.eps
201107
40-TB93PH-SIC1XG
H_17630_012.eps
201107
E_06532_012.eps
131004
Page 20
Personal Notes:
Circuit Diagrams and PWB Layouts
20TC8.1L CA7.
E_06532_013.eps
131004
Page 21
8.Alignments
Alignments
EN 21TC8.1L CA8.
8.1How to Put the Set into Factory Mode
•Turn down the volume to “0” by pressing “VOL-” button on
the set (front panel), followed by “DISPLAY” button on the
remote control.
•Press the “OK” button on the remote control.
•Press the “CH+” or the “CH-” button to select the parameter
you want to adjust.
•Press the “VOL+” or the “VOL-” button to adjust the
selected parameter.
•To put the new values into the memory, leave the factory
mode with the “MENU” button on the remote control.
8.2Adjustment of the B+ (BAT) voltage
1. Apply the Philips standard test pattern to the RF input.
2. Connect a DC voltmeter (range >200 V) to ground and
jumper J809 [1].
3. Adjust potentiometer VR840 [2] in STANDARD mode in
such a way the voltage reading is 120 ±2.5 V.
Note: in sets where VR840 is not present, this voltage cannot
be adjusted. In case the voltage is out of range, the defective
part(s) should be located and replaced.
12
11
H_17630_016.eps
271107
Figure 8-1 Test pin & potentiometer position
Page 22
EN 22TC8.1L CA8.
A
Alignments
8.3RF AGC Adjustment
1. Connect a test circuit as depicted in figure “Test circuit”.
2. Apply a color bar signal (80 dBμV).
3. Adjust the AGC data until the output of the test circuit
becomes 0.6 V (p-p) ±0.05 V.
4. Change the color bar signal to 60 dBμV.
5. The shown value of CRO should be the same as while
receiving the 80 dBμV signal. If not, repeat step 3 and 4
until the results for 60 dBμV and 80 dBμV input signal are
the same.
D2
Q101
C1
33pF
1N60
D1
1N60
C2
100pFR1100k
TO CRO
H_17480_007.eps
050707
Figure 8-2 Test circuit
8.4Screen & Focus Voltage Adjustment
1. Apply the test pattern signal in normal status.
2. Enter the Factory mode.
3. Press the "TV/AV" button to stop the vertical scan (Note:
the RC/GC/BC is preset to 80, 80, 80-/44; 65, 80, 80-/85.
GD/BD is preset to 40).
4. Adjust the SCREEN potentiometer on the line output
transformer in such a way the horizontal line is just visible
on the screen.
5. Measure the VG2 voltage with a High Voltage Meter and a
High Voltage Test stick (1000:1). The VG2 voltage should
be 665 ±85 V for SDI tubes and 800 ±60 V for HuiFei tubes.
6. Turn on the vertical output, and adjust the "FOCUS"
potentiometer on the line output transformer in such a way
the focus is maximized. The “FOCUS” voltage should be
within the range of 6 - 8.0 kV for SDI tubes and 7 - 11.0 kV
for HuiFei tubes.
8.5Sub-contrast, Sub-tint and Sub-color
adjustment
Note: the following adjustments are only applicable in case of
a CRT exchange. Otherwise, do not adjust these values.
1. Set “Brightness”, “Contrast”, “Color” and “Tint” to 50.
2. Connect the probe of an oscilloscope to the conjunction
between R201 and P201 (B-out).
3. In STANDARD status, apply the grey-scale/color-bar
(NTSC) signal to the AV/TV input.
4. Select CNTC to adjust the contrast, until amplitude “A” is
2.0V (p-p). Refer to figure “Waveform video signal”.
5. Select COLC to adjust the color by tuning the amplitude of
“a” and “d” to the same magnitude.
6. Select TNTC to adjust the tint by tuning the amplitude “b”
and “c” to the same magnitude.
7. In STANDARD status, apply the grey-scale/color-bar (PAL)
signal to the AV input.
8. Select COLP to adjust the sub-color by tuning the
amplitude of “a”, “b”, “c” and “d” to the same magnitude.
8.6White Balance Adjustment
8.6.1/44 Region sets
Normal color temperature adjustment.
1. Apply the following black and white pattern in Natural
status: black side: Y = 5 ±1 Nits ( ≅ low light); white side: Y
= 80 ±10 Nits ( ≅ high light).
2. Change the color temperature to Normal Status.
3. Use a color analyzer to measure the black side of the
screen. By changing the value of RC, GC and BC, set the
reading of the color analyzer to Standard.
4. Use a color analyzer to measure the white side of the
screen. By changing the value of GD and BD, set the
reading of the color analyzer to Standard.
5. Separately, set the brightness and contrast from minimum
to maximum, and repeat step 3 and 4 until the reading of
the color analyzer is correct.
Cool color temperature adjustment.
1. Change RC-W, GC-W, BC-W, GD-W and BD-W until the
reading of the color analyzer is correct.
Warm color temperature adjustment.
1. Change RC-C, GC-C, BC-C, GD-C and BD-C until the
reading of the color analyzer is correct.
CVI color temperature adjustment.
1. Set Color Temperature to Normal status.
2. Change YUV-RC, YUV-GC, YUV-BC, YUV-GD and YUVBD until the reading of the color analyzer is correct.
8.6.2/85 Region sets
Normal color temperature adjustment.
1. In Rich status, apply a white pattern 27 IRE (192.8 mV).
2. Measure the picture with a color analyzer and adjust RC,
GC and BC.
3. Apply a white pattern 67 IRE (478.57 mV).
4. Measure the picture with a color analyzer and adjust GD
and BD.
5. Repeat steps 1 to 4 until you get the right color temperature
on both dark and bright pictures.
Cool color temperature adjustment.
1. Adjust RC-C, GC-C, BC-C, GD-C and BD-C until the
reading of the color analyzer is correct.
Warm color temperature adjustment.
1. Adjust RC-W, GC-W, BC-W, GD-W and BD-W until the
reading of the color analyzer is correct.
CVI color temperature adjustment.
1. Adjust YUV-RC, YUV-GC, YUV-BC, YUV-GD and YUV-BD
until the reading of the color analyzer is correct.
8.6.3Reference values
See table “Standard settings” for reference.
Table 8-1 Standard settings
Picture ModeXY
Cool263 ±8265 ±8
Normal274 ±8280 ±8
Warm291 ±8300 ±8
a
bc
d
H_17630_017.eps
271107
Figure 8-3 Waveform video signal
Page 23
8.7EEPROM Data:
Note: although all items are adjustable, we only recommend to
adjust the items with an asterisk (*). The other items are
adjustable as well, but we strongly discourage adjusting them.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.Circuit Descriptions, Abbreviation List, and IC Data Sheets
Index of this chapter:
9.1 General
9.2 Chassis Block Diagram
9.3 Brief IC Descriptions
9.4 Abbreviation List
Notes:
•Figures can deviate slightly from the actual situation, due
to different set executions.
•For a good understanding of the following circuit
descriptions, please use the Wiring, Block (chapter 6) and
Circuit Diagrams (chapter 7). Where necessary, you will
find a separate drawing for clarification.
9.1General
This chassis uses the Toshiba TPMA8891 processor/decoder,
and has the following key components:
ItemName of IC Function
IC201 TMPA8891CXBNG MCU & Decoder
TU101 FSBP05P-3-E Tuner
Z101 K2966M SAW Filter
IC001 AT24C08A EEPROM
IC601 TDA7496SA Audio output amplifier
IC901 HCF4053BAnalog Switch
IC301 LA78040N-E Vertical Deflection Output IC
Q402 BU4508DZS Horizontal Output IC
IC801 TEA1506P Power Controller IC
IC1001MSP3425GMulti Sound Processor
9.2Chassis Block Diagram
Below find the chassis block diagram:
TUNER
( TU101)
SAWF
( Z101)
SDA SCL
EEPROM
4053BP
( IC901)
Video &
Audio
Decoder & MCU
TMPA8891
(IC201)
( IC001)
AV2 AV1
AV o utput
TDA7496
SA
(IC601)
Audio
MSP3425
(IC1001)
SIF
R
G
B
CRT
Board
CRT
Horizontal
Output circuit
+24V
Vertical Output
LA7804
(IC301)
Figure 9-1 Chassis block diagram
H_17630_018.eps
271107
Page 25
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.3Brief IC Descriptions
9.3.1 IC201 (TMPA8891CXBNG)
EN 25TC8.1L CA9.
The TMPA8891 is an integrated circuit for a PAL/ NTSC/
SECAM TV. A microcontroller (MCU) and a TV signal
processor are integrated in a 64-pin shrink DIP package.
Font:16 x 18
Display:32C x 12L
Color:8
Character:384
Half-tone
Transparent
870X CPU core
STOP/IDLE mode
XO
65
7
Reset
8MHz
DVcc
H/L out
+
47
48
Chroma Proc.
C-BPF
PAL/NTSC/SECAM
C-Trap
Black stretch
Y gamm a
Sharpness
18
17
+
Vout
A Vcc 8V
YC Vcc 5V
TV AGND
uP MPAGND
TV Dig GND
+
P52/SDA
57
OSD R/G/B/Ys/I
8
TEST
uP AVdd 5V
P56
55
56
54
CCD
Hor.Proc.
Sync.sepa
Hor.VCO HAFC-1
HAFC-2 H-shift
11
91521
10
+
uP VVss
uP DVDD 5V
TV DEF GND
Bout
53
52
Cut-off
Drive
RGB switch
Brightness
Half-tone
Transparent
Base Band Proc.
TINT
1H DL Int/Ext switch
Color Uni-color
RGB Matrix
1312
SCP
Hout
FBP
Gout
50
51
Vert.Proc.
V.C/D
V.ramp
V.geometry
V.Drive
14
+
HAFC 1
+
Rout
49
16
Vsaw
+
Y Proc.
19
IF IN
+
APC Fil
Monitor /VM out
4546
44
20
+
Y input
Cb input
SAW
AU Monitor out-1
RF AGC
Black Det
43
42
VM
IF
AGC
Video SW
22
Cr input
2423
+
EXT AU 1
C /V3 CVBS
+
IF GND
39
40413533
IF GND
AGC
DET
26
25
+
+
V2 CVBS/Y
ALC filter
IF AGC
+
Audio SW
27
V1 IN 1Vpp
+
Reg.
ATT
28
ABCL
-6dB
+
S-Reg.F
363738
FM
DEMO
De-emp
(on/off)
PAL/ NTSC demod
Auto.VCO
alignment
ALC
ATT
29
AU out 1
AU out 2
+
H.correction
+
DC NF
PIF PLL
IF Vcc 5V
3464
SW
AFT
PIF Proc.
Sound
TRAP
AU Monitor
BPF
SW
31
30
32
+
/ FM radio
TVout 2Vpp
H/Lout / SIF out
/AU Monitor out-2
H_17130_035.eps
240407
/2nd SIF in
EXT AU 2
Figure 9-2 Block diagram IC201 (TMPA8891CXBNG)
Page 26
EN 26TC8.1L CA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.3.2TU101 (FSBP05P-3-E)
Intermediate frequency:
•Picture carrier: 38.90 MHz
•Color carrier: 34.47 MHz
•Sound carrier: 33.40 MHz
Pin connection is as follows:
PinSymbol Description
1AGCAutomatic Gain Control
2
3ASI2C Bus Address Select
4SCLI2C Bus Serial Clock
5SDAI2C Bus Serial Data
6
7BPSupply Voltage Tuner Section +5V
8AFCAutomatic Frequency Control
9BTSupply Voltage Tuner Section +31V
10n.c. / IF1
11IF2Intermediate Frequency Out
9.3.3IC001 (AT24C08A)
It provides 8192 bits of serial electrically erasable and
programmable read-only memory (EEPROM) organized as
1024 words of 8 bits each. It needs to be pre-copied before
produced.
9.3.4IC601 (TDA7496SA)
9.3.5IC901 (HCF4053B)
This is an analogue switch. Its pinning diagram, pin description
and truth table are as follows:
Block Diagram
Pin Configuration
The TDA7496SA is a 2 x 5 W class AB power audio amplifier.
The pinning is as follows:
Block Diagram
V
INR
INL
470µF
PW_GND
470nF
S_GND
470nF
SVR 7
11
1
8
5
VOLUME
VAROUT_R
VOLUME
30K
VOLUME
34
100nF
VAROUT_L
300K
2
+
-
OP AMP
MUTE/STBY
PROTECTIONS
+
-30K
OP AMP
+5V
S
13
PW_GND
15
1000µF
14
OUTR
1000µF
S1 ST-BY
10K
1µF
S_GND
S2 MUTE
9
STBY
10
MUTE
60K
12
OUTL
Pin Configuration (Top View)
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
PW_GND
OUTR
V
S
OUTL
PW_GND
MUTE
STBY
S_GND
SVR
N.C.
INL
VAROUT_L
VOLUME
VAROUT_R
INR
H_17130_029.eps
240407
E_06532_040.eps
040507
Figure 9-4 Block diagram and pinning of IC901 (HCF4053)
Figure 9-3 Block diagram and pinning of IC601 (TDA7496SA)
Page 27
Circuit Descriptions, Abbreviation List, and IC Data Sheets
s
7
EN 27TC8.1L CA9.
9.3.6IC301 (LA78040N-E)
IC301 is a vertical deflection output IC.
Its block diagram and pin connection are as follows:
Block Diagram
Pin Configuration
17
9.3.7Q402 (BU4508DZS)
Q402 is a high speed switching, high voltage PNP power
transistor with a built-in damper diode, designed for use in
horizontal deflection circuits.
The pinning is as follows:
PIN CONFIGURATION
case
123
PINNING SOT186A
c
b
Rbe
e
SYMBOL
PINDESCRIPTION
1base
2collector
3emitter
case isolated
H_17130_031.ep
Figure 9-5 Block diagram and pinning of IC301 (LA78040N-E)
24040
H_17130_033.eps
240407
Figure 9-6 Pinning of Q402 (BU4508DZS)
Page 28
EN 28TC8.1L CA9.
9.3.8IC801 (TEA1506P)
IC801 is a switched mode power supply control IC.
Its block diagram and pinning are as follows:
Block Diagram
Circuit Descriptions, Abbreviation List, and IC Data Sheets
Pin Configuration
H_17130_032.eps
240407
Figure 9-7 Block diagram of IC801 (TEA1506P)
Page 29
Circuit Descriptions, Abbreviation List, and IC Data Sheets
EN 29TC8.1L CA9.
9.3.9IC1001 (MSP3425)
The SIF signal is sent out from Pin31 of IC201. It passes
through Q241, R241 and X241.
SIF will be finally sent into Pin2 of IC1001. An analog automatic
gain control circuit (AGC) allows a wide range of input levels.
The analog-to-digital conversion of the IF sound signal is done
by an A/D-converter. The high pass filter, formed by a coupling
capacitor at SIF_IN1+ suppresses video components.
IC1001 is controlled via the I2C bus slave interface.
The (analog) sound signal will go from Pin26/27 of IC1001 to
Pin1/5 of IC601. IC601 is a class AB power audio amplifier. The
output voltage of IC601 drives the speakers. The volume is
adjusted via the I2C bus.
Table 9-3 Sound Processor
Pin No. Pin NameTypeShort Description
1AVSUPAnalog power supply
+5V
2ANA_IN+INIF Input 1
3ANA_IN-INIF common
4TESTENINTest pin
5XTAL_ININCrystal oscillator
6XTAL_OUTOUTCrystal oscillator
7TPTest pin
8D_CTR_I/O_1 IN/OUT D_CTR_I/O_1
9D_CTR_I/O_0 IN/OUT D_CTR_I/O_0
10ADR_SELINI2C BUS address select
11STANDBYQINStand-by (Low-active)
12I2C_CLIN/OUT I2C clock
13I2C_DAIN/OUT I2C data
14I2S_CLI2S clock
15I2S_WSI2S word strobe
16I2S_DA_OUTI2S data output
17I2S_DA_IN1I2S1 data input
18ADR_CLADR clock
19DVSUPDigital power supply +5
V
20DVSSDigital ground
21I2S_DA_IN2I2S2 data input
22RESETQINPower-on-reset
23NCNot connected
24NCNot connected
25VREF2Reference ground 2
High-voltage part
26DACM_ROUTLoudspeaker out, right
27DACM_LOUTLoudspeaker out, left
28NCNot connected
29VREF1Reference Ground 1
High voltage part
30SC1_OUT_R OUTAudio 1 output, right
31SC1_OUT_LOUTAudio 1 output, left
32NCNot connected
33AHVSUPAnalog power supply
8.0V
34CAPL_MVolume capacitor MAIN
35AHVSSAnalog ground
36AGNDCAnalog reference voltage
High-voltage part
37SC2_IN_LINAudio 2 input, left
38SC2_IN_RINAudio 2 input, right
39ASGAnalog shield Ground
40SC1_IN_LINAudio 1 input, left
41SC1_IN_RINAudio 1 input, right
Pin No. Pin NameTypeShort Description
42VREFTOPReference voltage IF A/D
converter
43MONO_ININMono input
44AVSSAnalog ground
Page 30
EN 30TC8.1L CA9.
Circuit Descriptions, Abbreviation List, and IC Data Sheets
9.4Abbreviation List
1080i1080 visible lines, interlaced
1080p1080 visible lines, progressive scan
ADCAnalogue to Digital Converter
AFCAutomatic Frequency Control: control
signal used to tune to the correct
frequency
AGCAutomatic Gain Control: algorithm that
controls the video input of the feature
box
AMAmplitude Modulation
ARAspect Ratio: 4 by 3 or 16 by 9
AVAudio Video
B/GMonochrome TV system. Sound
carrier distance is 5.5 MHz
BTSCBroadcast Television System
Committee
CBACircuit Board Assembly (or PWB)
CVBSComposite Video Blanking and
Synchronization
CVIComponent Video Input
DACDigital to analogue Converter
DFUDirections For Use: owner's manual
DNRDynamic Noise Reduction
DRAMDynamic RAM
DSPDigital Signal Processing
DVDDigital Versatile Disc
EEPROMElectrically Erasable and
Programmable Read Only Memory
EXTEXTernal (source), entering the set by
SCART or by cinches (jacks)
FBLFast Blanking: DC signal
accompanying RGB signals
FMField Memory / Frequency Modulation
HH_sync
HDHigh Definition: 720p, 1080i, 1080p
HPHead Phone
IMonochrome TV system. Sound
carrier distance is 6.0 MHz
I2CIntegrated IC bus
ICIntegrated Circuit
IFIntermediate Frequency
IRInfra Red
IRQInterrupt ReQuest
Last StatusThe settings last chosen by the
customer and read and stored in RAM
or in the NVM. They are called at start-
up of the set to configure it according
the customers wishes
LATAMLATin AMerica
LEDLight Emitting Diode
LSLoud Speaker
M/NMonochrome TV system. Sound
carrier distance is 4.5 MHz
MOSFETMetal Oxide Semiconductor Field
Effect Transistor
MUTEMUTE Line
NAFTANorth American Free Trade
Association: Trade agreement
between Canada, USA and Mexico
NCNot Connected
NTSCNational Television Standard
Committee. Color system used mainly
in North America and Japan. Color
carrier NTSC M/N = 3.579545 MHz,
NTSC 4.43 = 4.433619 MHz (this is a
VCR norm, it is not transmitted off-air)
NVMNon Volatile Memory: IC containing
TV related data (for example, options)
O/COpen Circuit
OSDOn Screen Display
PALPhase Alternating Line. Color system
used mainly in Western Europe (color
carrier = 4.433619 MHz) and South
America (color carrier PAL M =
3.575612 MHz and PAL N = 3.582056
MHz)
PCBPrinted Circuit Board (or PWB)
PIPPicture In Picture
PLLPhase Locked Loop. Used, for
example, in FST tuning systems. The
customer can directly provide the
desired frequency
PSUPower Supply Unit
PWBPrinted Wiring Board (or PCB)
RAMRandom Access Memory
RCRemote Control transmitter
RC5 (6)Remote Control system 5 (6), the
signal from the remote control receiver
RFRadio Frequency
RGBRed, Green, and Blue. The primary
and Vertical sync
ROMRead Only Memory
SCSandCastle: two-level pulse derived
from sync signals
S/CShort Circuit
SCLClock signal on I2C bus
SDStandard Definition: 480i, 576i
SDAData signal on I2C bus
SDRAMSynchronous DRAM
SECAMSEequence Couleur Avec Memoire.
Color system used mainly in France
and Eastern Europe. Color carriers =
4.406250 MHz and 4.250000 MHz
SIFSound Intermediate Frequency
SMPSSwitch Mode Power Supply
SNDSouND
SOPSSelf Oscillating Power Supply
SRAMStatic RAM
SSBSmall Signal Board
STBYStand-by
SVHSSuper Video Home System
SWSub Woofer / SoftWare / Switch
THDTotal Harmonic Distortion
TXTTeleteXT
uPMicroprocessor
VLVariable Level out: processed audio
output toward external amplifier
VCRVideo Cassette Recorder
VGAVideo Graphics Array
WYSIWYRWhat You See Is What You Record:
record selection that follows main
picture and sound
XTALQuartz crystal
YPbPrComponent video (Y= Luminance, Pb/
Pr= Color difference signals B-Y and
R-Y, other amplitudes w.r.t. to YUV)
Y/CVideo related signals: Y consists of
luminance signal, blanking level and
sync; C consists of color signal.
Y-OUTLuminance-signal
YUVBaseband component video (Y=