Copyright 2004 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.
odes, and Fa
ultfinding 9
Top Control Panel (FL-13)(Diagram E) 5353
Power Supply PIP Panel(Diagram F1) 5456-57
Tuner IF and Demodulator PIP(Diagram F2) 5556-57
Linearity & Panorama Panel(Diagram G) 5858
LTI/CTI Interface Panel(Diagram H) 5960
Front Interface Panel (FL-13)(Diagram J) 6161
Front Interface Panel (PV2)(Diagram J) 6262
Front Interface and Keyb. Panel (Diagram J) 6364
8. Alignments65
9. Circuit Descriptions 73
Abbreviation List82
IC Data Sheets84
10 Spare Parts List86
11 Revision List90
Published by BB 0466 Service PaCEPrinted in the NetherlandsSubject to modificationEN 3122 785 14480
Page 2
EN 2L04E AA1.
Technical Specifications, Connections, and Chassis Overview
1.Technical Specifications, Connections, and Chassis Overview
Notes:
•Described specifications ar
e valid for the whole product
range.
•Figures below
can deviate slightly from the actual situation,
due to different set executions.
1.1Technical Specifications
1.1.1Vision
Display type: DV-CRT-RF
Scree
n size: 21” (55 cm), 4:3
Tuning system: PLL
TV Colour systems: PAL B/G
Video playback: NTSC
Channel selections: 100 presets
13 14 - FBL - gnd Ground H
15 - YC-C - in 0.7 V_pp / 75 ohm j
16 - n.c.
17 - Video Ground H
18 - Video Ground H
19 - CVBS - out 1 V_pp / 75 ohm k
20 - Y/CVBS - in 1 V_pp / 75 ohm j
21 - Shielding Ground H
1.3Chassis Overview
B1
CRT
ECO
B2
SCAVEM
SIDE AV PANEL +
D
HEADPHONE
LTI/CTI INTERFACE
H
PANEL
F1
POWER SUPPLY
TUNER IF &
F2
DEMODULATION
LINEARITY &
G
PANORAMA PANEL
CRT PANEL
PIP PANEL
MONO
CARRIER
TOP CONTROL PANEL
FRONT INTERFACE PANEL
POWER SUPPLY
LINE DEFLECTION
TUNER IF
HERCULES
FEATURES & CONNECTIVITIES
CLASS D AUDIO AMPLIFIER
AUDIO AMPLIFIER
REAR I/O CINCH
FRONT CONTROL
DVD POWER SUPPLY
E_14480_138.eps
E
J
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
260504
Figure 1-5 PWB location
Page 4
EN 4L04E AA2.
Safety and Maintenance Instructions, Warnings, and Notes
2.Safety and Maintenance Instructions, Warnings, and Notes
2.1Safety Instructions
Safety regulations require that during a repair:
•Due to the chassis concept, a very large
(incl. deflection) is 'hot'. Therefore, connect the set to the
mains via an isolation transformer.
•Replace
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.
Safe
e set
th
the following points:
•Gen
you to
horizontal deflection current is flowing. In particular this is
valid for the:
1. Pins of the line output
2. Fly-back capacitor(s).
3. S-correction capacito
4. Line output transistor.
5. Pins of the conn
6. Other components through which the deflection
Note: This re-solderin
due to metal fatigue in solder connections, and is therefore only
necessary for television sets more than two years old.
•Route the
them with the mounted cable clamps.
•Check th
damage.
•Check the strain
to prevent the cord from touching the CRT, hot
components, or heat sinks.
•Check the elect
and the secondary side (only for sets that have an isolated
power supply). Do this as follows:
1. Unplug the ma
2. Turn on the main pow
3. Measure the resistance va
4. Switch the TV 'off' and
•Check th
the customer touching any internal parts.
safety components, indicated
ty regulations require that after a repair, you must return
in its original condition. Pay, in particular, attention to
eral repair instruction: as a strict precaution, we advise
re-solder the solder connections through which the
transformer (LOT).
r(s).
ector with wires to the deflection coil.
flows.
g is advised to prevent bad connections
wire trees and
e insulation
relief of the mains cord for proper function,
r
ical DC resistance between the mains plug
two pins of the mains plug.
unplugged!).
mains plug and the metal shielding of the tuner or the
aerial connection of the set. The reading should be
between 4.5 MΩ and 12 MΩ.
two pins of the mains plug.
e cab
inet for defects, to prevent the possibility of
EHT cable correctly and secure
of the mains cord for external
ins cord and
connect a wire between the
er switch (keep the mains cord
lue betwe
remove the wire between the
part of the circuitry
by the symbol h,
current
en the pins of the
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 Fig. 2-1, to
discharge the picture tube. Use a high voltage probe and a
multi-meter (position V_dc). Discharge until the meter
reading is 0 V (after approx. 30 s).
V
Figure 2-1 Discharge picture tube
ot
•All ICs and many
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 potential. Available ESD
protection equipment:
omplete kit ESD3 (small tablemat, wristband,
– C
connection box, extension cable and ground cable
4822 310 10671.
– Wristband tester 4822 344 13
•Together with the deflection unit and any multi-pole unit,
flat square p
deflection and the multi-pole units are set optimally at the
factory. We do not recommend adjusting this unit during
repair.
•Be carefu
section and on the picture tube.
•Never replace modules or other components while the unit
is 'on’.
•When yo
This will prevent any short circuits and the danger of a
circuit becoming unstable.
l during
u
align the set, use plastic rather than metal tools.
her semiconductors are susceptible to
999.
icture tubes form an integrated unit. The
measurements in the high voltage
2.4Notes
E_06532_007.eps
250304
)
2.2Maintenance Instructions
We recommend a maintenance inspection carried out by
qualified service personnel. The interval depends on the usage
conditions:
en a customer uses the set under normal
•Wh
circumstances, for example
recommended interval is three to five years.
en a customer uses the set in an environment with
•Wh
high
er dust, grease, or moisture levels, for example in a
kitchen, the recommended interval is one year.
intena
•The ma
1. Perform the 'general repair instru
2. Clean the power supply and deflection circuitry on the
chassis.
3. Clean the pictu
tube.
nce inspection includes the following actions:
r
in a living room, the
ction' noted above.
e tube panel and the neck of the picture
2.4.1 General
•Measure the voltage
chassis (= tuner) ground (H), or hot ground (I), depending
on the tested area of circuitry.
he voltages and waveforms shown in the diagrams are
•T
indicative. Measure them in the Service Default Mode (see
chapter 5) with a color bar signal and stereo
(L: 3 kHz, R: 1 kHz unless stated otherwise) and picture
carrier at 475.25
(channel 3).
•Where nece
with (D) and without (E) aerial signal. Measure the
voltages in the power supply section both in normal
operation (G) and in standby (F). These values are
indicated by means of the appropriate symbols.
s and waveforms with regard to the
sound
MHz fo
r PAL, or 61.25 MHz for NTSC
s
sary, measure the waveforms and voltages
Page 5
Safety and Maintenance Instructions, Warnings, and Notes
EN 5L04E AA2.
•The picture tube panel has printed spark gaps. Each spark
gap is connected between an electrode of the picture tube
and the Aquadag coating.
he semiconductors indicated in
•T
the parts lists, are interchangeable per position with the
semiconductors in the unit, irrespective of the type
indication on these semiconductors.
tic Notes
2.4.2Schem
2.4.3Practic
a
•All resistor values are in ohms and the value multiplier is
of
ten used to indicate the decimal point location (e.g. 2K2
indicates 2.2 kohm).
esistor values with no multiplier may b
•R
either an "E" or an "R" (e.g. 220E or 220R indicates 220
ohm).
•All capacitor valu
(µ= x 10^-6), nano-farads (n= x 10^-9),
(p= x 10^-12).
apacitor values may also use the value mult
•C
decimal point indication (e.g. 2p2 indicates 2.2 pF).
•The correct component values are listed in the Electrical
eplacement Parts List. Therefore, always check this list
R
when there is any doubt.
al Service Precaution
es are expressed in
the circuit diagram and in
e indicated with
micro-farads
or pico-farads
s
iplier as the
•Adjust your solder tool so that a temperature around
217 - 220 deg. C
•Do not mix lead-free soldering tin with lead
this will lead to un
•Use only original spare parts listed
are lead-free parts!
•On the website
find more information on:
– Aspects of lead-free technology.
– BGA (de-)soldering
Philips sets, and others
is reached at the solder joint.
reliable solder joints!
www.atyourservice.ce.philips.com you can
,
heating-profiles of BGAs used in
ed soldering tin;
in this manual. These
•It makes sense
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.
lways respect voltages. While some may not be
•A
da
ngerous in themselves, they can cause unexpected
reactions - 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.
efore powering up the TV set with the back cover off
•B
(or on a
ground and to a screwdriver blade that has a well insulated
handle. After the TV is powered "on" and high voltage has
developed, probe the anode lead with the blade, starting at
the case of the High Voltage Transformer (flyback - IFT).
Move the blade to within two inches of the connector of the
CRT. If there is an arc, you found it the easy way, without getting a shock! If there is an arc to the
screwdriver blade, replace the part that is causing the
problem: the High Voltage Transformer or the lead (if it is
removable).
2.4.4L
ead Free Solder
T
his set is manufactured with lead-free
This is also indicated on the PWB by the PHILIPS lead-free
logo (either by a service-printing or by a sticker).
to avoid exposure to electrical shock.
test fixture), attach a clip lead to the CRT DAG
production technology.
P
b
Figure 2-2 Lead-free logo
This set is produced with lead-free solder
lead-free sub-parts. It can be considered as lead-free.
Due to this fact, some rules have to be respected by the
workshop during a rep
•Use only lead-free soldering tin
code 0622 149 00106. If lead-free solder paste is required,
please contact the manufacturer of your soldering
equipment.
se only adequate solder tools applicable for lead-free
•U
soldering tin.
air:
alloy as well as with
Philips SAC305 with order
Page 6
EN 6L04E AA3.
3.Directions for Use
You can download this information from the following website:
http://www.philips.com/support
1. Click on “Dow
2. Fill in the T
Type?” [2] and click on “Search” [3].
Note: The correct model/typenumber can be found on the
rear cover
model/typenumber, just fill in e.g. “32PW95” or “PW95” (do
not use wildcards).
en results are returned, click o
3. Wh
typenumber under “Model” [4].
4. Now, click on the “Owner's manual” [5]
language. To read/open the PDF files you can download
and install the free Acrobat Reader
Warning: Be sure to disconnect the AC power from the set
before opening it.
4.1.1Rea
Cover
r
1. Remove all fixation screws of the rear cover (do not forget
th
e screws that hold the rear connection panel).
2. Pull the rear cover backwards to remove it.
4.2Service Position
Before placing the Mono Carrier in its service position, remove
the Front Interface assy/panel (see paragraph “Front Interface
Assy/Panel removal”), the Side AV assy/panel (see paragraph
“Side AV Assy/Panel removal”) and the PIP assy/panel (if
exists) (see paragraph “PIP Assy/Panel removal”).
1. Disconnect the de
gaussing coil [1].
2. Release the two fixation clamps (at the
right side of the bracket), and remove the bracket from the
bottom tray, by pulling it backwards [2].
3. Turn the chassis
tray 90 degrees counte
4. Move the panel bracket somewhat to the le
degrees [3], with the components towards the CRT.
5. Turn the pane
6. Place the hook of the tray in t
l bracket with the rear I
he fixation hole of the cabinet
bottom [4] and secure it.
4.3Assies/ Panels Removal
4.3.1Front Interface Assy/Panel Removal
1
2
3
1
3
mid left and mid
r clockwise.
ft and flip it 90
/O toward the CRT.
E_14480_049.eps
110204
Figure 4-2 Front interface assy/panel removal
1. Remove the complete module from
the bottom plate, by
pulling the two fixation clamps upward [1], while sliding the
module away from the CRT [2].
i
Note: these clamps are diff
cult to access.
2. Release the two fixation clamps [3] at the side of the
bracket, and lift
1
one side).
4.3.2Side AV Assy/Panel R
2
A
the panel out of the bracket (it hinges at
emoval
3
4
B
E_14480_048.eps
Figure 4-1 Service position Mono Carrier
110204
E_14480_050.eps
Figure 4-3 Side AV assy/panel removal
1. Remove the two fixation screws,
Side AV assembly.
2. Release the two fixation cla
mps, and lift the panel out of the
bracket.
170204
and remove the complete
Page 8
EN 8L04E AA4.
4.3.3LTI/CTI Interface Panel Removal
Remove the LTI/CTI Interface panel from the Mono Carrier, by
di
sconnecting it from connector 1212.
4.3.4Top Control Assy/Panel Removal
tes:
No
•PV02 styling: assy is mounted in the front cabinet;
•FL13B styling: assy is mounted in the rea
1. Remove the two
2. Push the assy a little bit upwards, an
backwards to release it from the front hinge.
he panel from its bracket, while rele
3. Lift t
fixation clamps.
fixation scre
ws.
d then pull it
Mechanical Instructions
r cover.
asing the four
4.3.5L
4.3.6PIP A
inearity Assy/Panel Removal
Fig
1. Release the two fixa
the bracket [2].
ssy/Panel R
1. Release the two fixa
bracket.
2
E_14480_051.eps
ure 4-4 Linearity assy/panel removal
tion clamps [1] to lift the panel out of
emoval
tion clamps to lift the panel out of the
1
1
270204
4.4Set Re-assembly
To re-assemble the whole set, do all processes in reverse
order.
Note: before you mount the rear cover, pe
checks:
1. Check wh
its guiding brackets.
2. Check whether a
position
ether the AC
power cord is mounted correctly in
ll cables are replaced in their original
rform the following
Page 9
Service Modes, Error Codes, and Fault Finding
5.Service Modes, Error Codes, and Fault Finding
EN 9L04E AA5.
Index:
1. Test Points.
2. Service Modes.
3. Problems and
Solving Tips (related to CSM).
4. ComPair.
5. Error Codes.
6. The Blinking LED Procedure.
7. Protections.
8. Repair Tips.
5.1Test Points
The chassis is equipped with test points printed on the circuit
board assemblies. These test points refer to the functional
blocks:
Perform measurements under the following conditions:
•Television set in Service Def
ault Alignment Mode.
•Video input: Colour bar signal.
•Audio input: 3 kHz left cha
nnel, 1 kHz right channel.
5.2Service Modes
Service Default mode (SDM) & Service Alignment Mode (SAM)
offers several features for the service technician, while the
Customer Service Mode (CSM) is used for communication
between the call centre and the customer.
tion o
This chassis also offers the op
hardware interface between a computer and the TV chassis. It
offers the abilities of structured troubleshooting, error code
reading, and software version readout for all these chassis.
Minimum requirements for ComPair: a Pentium processor, a
Windows OS, an
d a CD-ROM drive (se
f using ComPair, a
e "ComPair" section).
Table 5-2 Software cluster overview
SW Clusters SW VersionFirst MaskRemarks
L4LEF1L04EF11.0
L4LEF2L04EF21.0
L4LEF3L04EF31.0
L4LEF4L04EF41.0
L4LEF5L04EF51.0
L4LEF6L04EF61.0
L4LEF7L04EF71.0 TDA12020H1/N1B11 ICON UI
A2
5.2.1Service
Default Mode (SDM)
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 Radio 4:3 set only.
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 Radio 4:3 set only.
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 PIP
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 PIP
TDA12020H1/N1B11 Western Europe
TDA12021H1/N1B11 Radio & PIP.
TDA12020H1/N1B11 Eastern Europe
TDA12021H1/N1B11 Radio & PIP.
Purpose
A5
•To create a predefined setting for measurements to be
made.
•To override software protections.
•To start the blinking LED proc
edure.
Specifications
•Tuning frequency:
•Colour system: P
•All picture settings at 50
475.25 MHz.
AL/SECAM.
%
(brightness, colour contrast, hue).
•Bass, treble and balance
•All service-unfriendly modes (if present)
at 50 %; volume at 25 %.
are disabled. The
service unfriendly modes are:
– Timer / Sleep timer.
– Child / parental lock.
– Blue mute.
– Hotel / hospital mode.
– Auto shut o
ff (when no 'IDENT' video signal is received
for 15 minutes).
– Skipping of non-favourite preset
s / channels.
– Auto-storage of personal presets.
– Auto user menu time
-out.
– Auto Volume Levelling (AVL).
How to enter
To enter SDM, use one of the following methods:
•Press the following key sequence on the remote control
transmitter: '0 6 2
5 9 6' directly followed by the 'MENU'
button (do not allow the display to time out between entries
while keying the sequence).
925
•Short jumper wires
2 and 9275 on the family board (see
Fig. 8-1) and apply mains. Then press the power button
(remove the short after start-up).
y
Caution: Entering SDM b
shorting wires 9252 and 9275
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 damage the television
set.
•Or via C
omPair (with the C
omPair ‘Tools’, it should be
possible to enter SDM via the ComPair interface).
After entering SDM, the following screen
is visible,
with SDM in
the upper right corner of the screen to indicate that the
television is in Service Default Alignment Mode.
•When you press the MENU button on the remote control,
the set will sw
mode.
the TV, press and hold the 'VOLUME down' and press
•On
the 'C
SDM to SAM and reverse.
How to exit
Switch the set to STANDBY by pressing the POWER button on
e remote control t
th
If you turn the television set off by removing the Mains (i.e.,
nplug
ging the television) without using the POWER button,
u
the television set will remain in SDM when mains is re-applied,
and the error buffer is not cleared.
5.2.2Servic
e Align
Purpose
•To change option settings.
•To display / clear the error code
•To perform alignments.
Specifications
•Run timer (maximum five digits displayed
•Software version, Error & Option Byt
•Clear error buffer.
•Option settings
•AKB switching
•Software alignments (T
Geometry & Audio)
•NVM Editor
•ComPair Mode switching
w to enter
Ho
To enter SAM, use one of the following methods:
•Press the
transmitter: '0 6 2 5 9 6' directly followed by the “On Screen
Display icon “i +” button (do not allow the display to time out
between entries while keying the sequence).
•Or via ComPair.
After entering SAM, the following scr
the upper right corner of the screen to indicate that the
television is in Service Alignment Mode.
itch on the normal user menu in the SDM
HANNEL down' for a few seconds, to switch from
ransmitter or the television set.
ment Mode (SAM)
buffer.
es display
uner, 2 Tuner PIP, White Tone,
following key seque
nce on the remote control
en is visible, with SAM in
e
)
250504
00028 L04EF30.10 SAM
ERR 0 0 0 0 0
OP 000 057 140 032 120 128 000
. Clear Clear ?
. Options
. AKB On
. Tuner
. 2 Tuner PIP*
. White Tone
. Geometry
. Audio
. NVM Editor
. ComPair on
optional
*
Figure 5-2 SAM menu
Menu explanation
LLLL. T
1. L
normal operation hours, but does not count standby hours
(maximum four digits displayed).
2. AA
main microprocessor:
– A = the project name (L04).
– B = the region: E= Europe, A= Asia Pacific, U= NAFTA,
– C = the software diversity:
– D = the language cluster number.
– X = the main software version number (updated with a
– Y = the sub software version
3. SAM. In
4. Error Buffer. Shows all errors
the buffer was erased. Five errors possible.
5. Option Bytes. U
in the Alignments section for a detailed description. Seven
codes are possible.
6. Cle
CLEAR
content of the error buffer is cleared.
7. Op
Alignme
8. AK
current loop' (AK
9. Tuner. U
Alignments section for a detailed description.
10. 2
11. White Tone. Used to
in the Alignments section for a detailed description.
12. Geo
televisio
detailed description.
13. Au
set.
his represents the run timer. The run timer counts
ABCD-X.Y. This
AM.
L= LAT
•Europe: T =
control.
•LATAM and NAFTA: N = Stere
Stereo dBx.
•Asian P
NTSC.
•ALL regions:
major chan
versions).
minor change that is compatible with previous
versions).
dication of the Service Alignment Mode
ar. Erases the contents of the error buffer. Select the
menu item and press the MENU RIGHT key. The
tions. Used to set the option bits. See 'Options' in the
nts section for a detailed description.
B. Used to disable (Off) or enable (On) the 'black
sed to align the tuner. See 'Tuner' in the
Tuner PIP. Used to align the tuner PIP (optional)
metry. Used to align the geometry settings of the
n. See 'Geometry' in the Alignments section for a
dio. No audio alignme
is the software identification of the
1 page TXT, F = Full TXT, V = Voice
a
cific: F = Full TXT, N = non TXT, C =
M = mono, D = DVD, Q = Mk2.
ge that is incompatible with previous
sed to set the option bytes. See 'Options'
B = Auto Kine Bias).
align the white tone. See 'White Tone'
nt is necessary for this television
E_14480_140.eps
260504
o non-dBx, S =
number (updated w
detected since the last time
ith a
.
Page 11
Service Modes, Error Codes, and Fault Finding
14. NVM Editor. Used to change the NVM data in the
television set.
mPair Mode. Used to switch on the television to ISP
15. Co
mod
e (for uploading software)
How to navigate
•In SAM, select menu items with the MENU UP/DOWN keys
on
the remote control transmitter. The selected item will be
highlighted. When not all menu items fit on the screen, use
the MENU UP/DOWN keys to display the next / previous
menu items.
LEFT/R
•With the MENU
– Activate the selected menu item.
– Change the value of th
– Activate the selected submenu.
•In SAM, when you press the MENU button twice, the set
ill switch to the normal user menus (with the SAM mode
w
still active in the background). To return to the SAM menu
press the MENU or STATUS/EXIT button.
•When you press the ME
submenu, you will return to the previous menu.
IGHT keys, it is possible to:
e selected menu item.
NU key in while in an SDAM
1 00028 L04EF30.10 CSM
2 CODES 0 0 0 0 0
3 OP 000 057 140 032 120 128 000
4 nnXXnnnn/nnX
5 P3C-1
6 NOT TUNED
7 PAL
8 STEREO
9 CO 50 CL 50 BR 50 HU 0
0 AVL Off BS 50
E_14480_141.eps
igure 5-3 CSM menu
F
EN 11L04E AA5.
250504
How to store SAM settings
To store settings changed in SAM leave the top level SAM
menu by
transmitter or the television set.
How to exit
Switch the set to STANDBY by pressing the POWER button on
the remote contro
If you turn the television set off by removing the mains (i.e.,
unplugging the television) without
the television set will remain in SAM when mains is re-applied,
and the error buffer is not cleared.
5.2.3Cu
Purpose
T
information on the TV operation se
instruct the customer to enter CSM by telephone and read off
the information displayed. This helps the call centre to
diagnose problems and failures in the TV set before making a
service call.
The CSM is a read-only mode; therefore, modifications are not
possible in this mode.
How to enter
To enter CSM, press the following key sequence on the remote
control tra
out between entries while keying the sequence).
Upon entering the Customer Service Mode, the following
screen will appear:
using the POWER button on the remote control
l transmitter or the te
stomer Service Mode (CSM)
he Customer Service Mode shows error codes and
nsmitter: '
1 2 3 6 5 4' (do not allow the display to time
levision set.
using the POWER button,
ttings. The call centre can
Menu explanation
1. Indication of the service mode (CSM = Customer Service
Mode).
2. Reserved item.
3. Software ide
'Service Default Alignment Mode' for an explanation)
4. Reserved item for P3C c
Advanced Knowledge Base System).
5. Indicates the
television is receiving an 'IDENT' signal on the selected
source. If no 'IDENT' signal is detected, the display will
read 'NOT TUNED'
6. Displays th
buffer.
How to exit
To exit CSM, use one of the following methods:
•Press the MENU, STATU
remote control transmitter.
•Press the POWER button on the television set.
ntification o
type of TV system or whether or not the
e last five e
f the main microprocessor (see
all centres (AKBS stands for
rrors detected in the error code
/EXIT, or POWER button on the
S
5.3Problems and Solving Tips Related to CSM
5.3.1Picture Problems
Note: The pr
settings. The procedures used to change the value (or status)
of the different settings are described.
Picture too dark or too bright
If:
•The
PICTU
•The picture improves when you enter the Customer
Service Mode
oblems described below are all related to the TV
picture improves when you have press the AUTO
RE button on the remote control transmitter, or
Then:
1. Press
2. Press the
3. In the normal user menu, use the MEN
4. Press
5. Use the MENU UP/DOWN
6. Press the MENU LEFT/RIGHT keys to increase or
7. Use the MENU
the AUTO PICTURE button on the remote control
transmitter repeatedly (if nece
PERSONAL picture mode.
MENU button on the remote control transmitter.
This brings up the normal user menu.
to highlight the PICTURE sub menu (if necessary).
the MENU LEFT/RIGHT keys to enter the PICT
sub menu.
BRIGHTNESS.
decrease the BRIGHTNESS v
UP/DOWN
ssary) to choose
U UP/DOWN keys
keys (if necessary) to select
alue.
keys to select PICTURE.
URE
Page 12
EN 12L04E AA5.
Service Modes, Error Codes, and Fault Finding
8. Press the MENU LEFT/RIGHT keys to increase or
decrease the PICTURE value.
9. Press the
twice to exit the user menu.
10. The new PERSONAL preference values are automa
stored.
White line around picture elements and text
If:
The picture improves after you have pressed the
PICTURE button on the remote control transmitter
Then:
1. Press the AUTO PICTU
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU butt
This brings up the normal user menu.
3. In the normal u
to highlight the PICTURE sub menu (if necessary).
4. Press the MENU LEF
sub menu.
5. Use the MENU UP
6. Press the MENU LEFT key to decrease the SHARPNESS
value.
7. Press the MENU button
twice to exit the user menu.
8. The ne
stored.
Sn
owy picture
To enter CSM, press the following key sequence on the remote
control transmitter: '123654' (do no
out between entries while keying the sequence).
Check CSM line 5. If this line reads 'Not Tuned,' check the
llowing:
fo
•Antenna not connected. Connect the antenn
•No antenna signa
antenna signal.
•The tuner is faulty (in this
will contain error number 10). Check the tuner and replace/
repair the tuner if necessary.
Black and white picture
If:
•The picture improves after you have p
PICTURE button on the remote control transmitter
MENU button
s
w PERSONAL preference value is automatically
on the remote control transmitter
tically
UTO
A
RE button on the remote control
on on
the remote control transmitter.
er menu, use the MENU UP/DOWN keys
T/RIGHT keys to enter the PICTURE
/DOWN keys to select SHARPNESS.
on the remote control transmitter
t allow the display to time
a.
l or bad antenna signal. Connect a proper
case line 6, the Error Buffer line,
ressed the AUTO
text not sharp enough
Menu
If:
he picture improves after you have pressed the AUT
•T
PICTURE button on the remote control transmitter.
Then:
1. Press the AUTO PICTURE button on the remote control
transmitter repeate
PERSONAL picture mode.
ss the MENU button on the remote control transmitter.
2. Pre
T
his brings up the normal user menu.
3. In the normal user menu, use the MENU UP/DOWN keys
to highligh
4. Press the MENU LEFT/RIGHT keys to enter the PICTURE
sub menu.
5. Use the MEN
6. Press the MENU LEFT key to decrease the PICTURE
val
7. Pre
twice to exit th
8. The new PERSONAL preference valu
stored.
t the PICTURE sub menu (if necessary).
ue.
ss the MENU button on the remote control transmitter
dly (if necessary) to choose
U
UP/DOWN keys to select PICTURE.
e user menu.
e is automatically
5.4ComPair
5.4.1 Introduction
ComPair (Computer Aided Repair) is a service tool for Philips
Consumer E
development on the European DST (service remote control),
which allows faster and more accurate diagnostics. ComPair
has three big advantages:
•ComPair helps you
to repair the chassis in a short time by guiding you
systematically through the repair procedures.
•ComPair a
and is therefore capable of accurately indicating problem
areas. You do not have to know anything about I2C
commands yourself because ComPair takes care of this.
•ComPair speeds up the repair time since it can
autom
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.
5.4.2 Specificati
lectronics products. ComPair is a further
to quickly get
lows very detailed diagnostics (on I2C level)
l
atically communicate with the chassis (when the
ons
an understanding on how
O
Then:
1. Press the AUTO PICTU
transmitter repeatedly (if necessary) to choose
PERSONAL picture mode.
2. Press the MENU butt
This brings up the normal user menu.
3. In the normal u
to highlight the PICTURE sub menu (if necessary).
4. Press the MENU LEF
sub menu.
5. Use the MENU UP
6. Press the MENU RIGHT key to increase the COLOR value.
7. Press the MENU button
twice to exit the user menu.
8. The new PERSONAL preference value is automatically
stored.
s
RE button on the remote control
on on
the remote control transmitter.
er menu, use the MENU UP/DOWN keys
T/RIGHT keys to enter the PICTURE
/DOWN keys to select COLOR.
on the remote control transmitter
ComPair consists of a Wind
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 this chassis, the ComPair interface box and the TV
communicate via a bi-direction
connector.
The ComPair faultfinding program
problem of the defective television. ComPair can gather
diagnostic information in two ways:
tomatic (by communication with the television):
•Au
ComPair can au
entire error buffer. Diagnosis is done on I2C level. ComPair
can access the I2C bus of the television. ComPair can
send and receive I2C 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 I2C
busses of the TV-set.
ually (by asking questions to you): Automatic
•Man
diagnosis is on
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 give a picture? Click on the correct answer: YES /
ly possible if the micro controller of the
ows based faultf
al service cable via the
is able to determine the
tomatically read out the contents of the
inding program
service
Page 13
Service Modes, Error Codes, and Fault Finding
EN 13L04E AA5.
NO) and showing you examples (e.g. Measure test-point I7
and click on the correct waveform 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
ComPair will enable you to find
question / answer procedure
,
most problems in a fast and effective way.
Beside fault finding, ComPair provides some additiofeatures like:
p- or downloading of pre-sets.
•U
•Managing of pre-set lists.
•Emulation of the Dealer Service T
ool (DST).
•If both ComPair and SearchMan (Electronic Service
ual) are installed, all the schematics and the PWBs of
Man
the set are available by clicking on the appropriate
hyperlink. Example: Measure the DC-voltage on capacitor C2568 (Schematic/Panel) at the Mono-carrier.
– Click on the
'Panel' hype
rlink to automatically show the
PWB with a highlighted capacitor C2568.
– Click on the 'Schematic' hy
perlink to automatically
show the position of the highlighted capacitor.
5.4.3How To Connect ComPair
1. First, install the ComPair Browser software (see the Quick
eference Card for installation instructions).
R
onnect the RS232 interface cable between a free serial
2. C
(COM) port of you
r PC and the PC connector (marked with
'PC') of the ComPair interface.
onnect the mains adapter to the supply connector
3. C
(marked with 'P
OWER 9V DC') of the ComPair interface.
4. Switch the ComPair interface “off”.
5. Switch the television set “
off” with the mains switch.
6. Connect the ComPair interface cable between the
connector on the re
ar side of the ComPair interface
(marked with 'I2C') and the ComPair (or Service) connector
at the rear side of the TV (for its location see figure 8-1 in
chapter “Alignments”).
7. Plug the mains adapter in
a mains outlet, and
interface “on”. The green and red LEDs light up together.
The red LED extinguishes after approx. 1 second while the
green LED remains lit.
r
8. Start the ComPair p
ogram and read the 'Introduction'
chapter.
nal
switch the
•SearchMan32 CD
(update): 3122 785 60080 (year 2002),
3122 785 60120 (year 2003).
c
•ComPair interfa
e cable: 3122 785 90004.
•Transformer (non-UK): 4822 727 21632.
•Transformer UK: 4822 727 21633.
e: If you encounter any problems, contact
Not
support desk.
5.5Error Codes
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 displayed at the left side and all other errors shift one
position to the right.
The Error Buffer
5.5.1How To
5.5.2How To Clear T
Read
You can read the error buffer in 3 ways:
•On scree
Examp
– ERROR: 0
n via the SDAM (if you have a picture).
les:
0 0 0 0 : No
errors detected
– ERROR: 6 0 0 0 0 : Error code 6 is the last a
detected error
– ERROR: 9 6 0 0 0 : Error
code 6 w
as detected first and
error code 9 is the last detected (newest) error
•Via the blinking LED procedure (when you have no
picture). See 'The Blinking LED Proced
ure'.
•Via ComPair.
he Error Buffer
The error code buffer is cleared in the following cases:
•By using the CLEAR command in the SDAM menu:
– To enter SAM, press the following key sequence on the
re
mote control transmitter: '062596' directly followed
by the “OSD" icon button (do not allow the display to
time out between entries while keying the sequence).
enu ite
– Make sure the m
m CLEAR is highlighted. Use
the MENU UP/DOWN buttons, if necessary.
– Press the MENU RIGH
T button to clear the error
buffer. The text on the right side of the 'CLEAR' line will
change from 'CLEAR?' to 'CLEARED'
down the errors present
in the error buffer and clear the error buffer before you begin
the repair. This ensures that old error codes are no longer
present.
If possible, check the entire contents of the error buffer. In
some situation
s, an error code is only the result of another error
and not the actual cause of the problem (for example, a fault in
the protection detection circuitry can also lead to a protection).
UA1316/A
5Not applicable +5v protection 7604, 7605A5
6I2C busGeneral I2C error7200, 3207, 3214A4
7Not applicable --8Not applicable --924C16I2C error while communicating with the EEPROM7601, 3604, 3605A5
10Tuner= I2C error while communicating with the PLL tuner1000, 5001A3
11TDA6107/ABlack current loop instability protection7330, 3351, CRTB1
12SDA9488XI2C error while communicating with the PIP processor7242 (PIP Module)F1
13Not applicable --14DVD LoaderI2C error while communicating with the DVD Interface module DVD Interface moduleDVD Loader
15TDA9178T/N1 I2C error while communicating with LTI module7610H
16TDA9887I2C error while communicating with PIP_Demodulator7201F2
17Not applicable --18Not applicable --19TDA1200I2C error while communicating with SSD stereo sound decoder 7200A4
TDA1200I2C error while communicating with video cosmic in Hercules IC 7200A4
20
I2C error while communicating with 2nd tuner1000, 5010 (PIP Module)F2
Service Modes, Error Codes, and Fault Finding
6412.
A2
Note: Errors 7, 8, 13, 17, 18 are
not applicable.
5.6The Blinking LED Procedure
Using 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
-buffer:
error
en all the error-codes are displayed, the sequence
•Wh
finishes w
•The sequence starts again.
Example of error buffer: 12 9
After entering SDM, the following occurs:
•1 long 'on' blink of 5 seconds to start the sequence,
•12 short blinks follow
•9 short blinks followed by a pause of 1.5 seconds,
•6 short blinks followed by a pause of 1.5 seconds,
•1 long 'on' blink of 1.5 seconds to finish the sequence,
•The sequence starts again at 12 short blinks.
ith an 'on' LED blink of 1.5 seconds,
6 0 0
ed by a pause of 1.5 seconds,
5.7Protections
If a fault situation is detected, an error code will be generated;
and, if necessary, the television set will go into 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 protection mode. The error codes of the
error buffer and the blinking LED procedure can be read via the
Service Default Menu (SDM), or via ComPair.
t
To get a quick diagnosis the chassis has
implemented:
•The Customer Service Mode (CSM).
•The Service Default Mode (SDM).
•The Service Alignment Mode (SAM).
or a detailed description, see the "Customer Service Mode,
F
Service Default mode" and "Service
hree service modes
Alig
nment Mode" sections.
5.8Fault Finding and Repair Tips
Notes:
•It is assumed that
with correct values and no bad solder joints.
•Before any fault finding actions, check if the correct options
t.
are se
5.8.1 NVM Editor
In some cases, it ca
NVM conte
mode. In the next table, the default NVM values are given.
nts. This can be done with the “NVM Editor” in SAM
2084F
Last Brightness (VID PP others)26434
Last Color (VID PP others)2652C
Last Contrast (VID PP others)2664B
Last Sharpness (VID PP others)26737
Last Hue (VID PP others)26832
Last Colour Temperature (VID PP others) 2690D
White-D Cool Red294FD
White-D Cool Blue2968
White-D Normal Red29722
White-D Normal Green29820
White-D Normal Blue2991B
White-D Warm Red3002
White-D Warm Blue302FA
Last Volume34319
Last Balance34432
Last Treble (AUD PP others)34532
Last Bass (AUD PP others)34632
Set Not Working
Check Power
Supply Mains
Switch
Bridge Rectifier
circuit 6500
Ok
Check DC
voltage at
2505/2507
Ok
Check
fusible
resistor 3532
Not Ok
Check
7512
Not Ok
Check fusible
resistor 3510 &
circuit before it
Check IC7511 &
IC7531
Ok
Set able to
start-up
Yes
End
No
Check other
fusible resistor
and capacitor in
the circuit
E_14480_057.eps
190204
Figure 5-5 Fault finding tree “Set not working”
Set Does Not Start Up
Set Unable
to Start
Software
loaded?
Yes
Check
voltage
across 2552
No
Is Vbatt
approximately
140V
Yes
Check
voltage 2562
&2563
16V
Yes
Check 3V
across 2535
Yes
Check 6V
across 2535
Fuse Blown?
Load
Software
Yes
No
Yes
Check Power
Supply circuit
No
Set able to
Start
Yes
Change
Fuse
No
Check Line
Transistor 7405
Figure 5-6 Fault finding tree “Set do
End
es no
E_14480_058.eps
t start up”
170204
Page 16
EN 16L04E AA5.
Service Modes, Error Codes, and Fault Finding
5.8.3Deflection
One Thin Vertical Line
Quick check:
•Set in pr
•LED blinking with error “3
One Thin Vertical Line
LED Blinking
Check all
connection and
peripheral at
Deflection Circuit in
place
Check
Line Transistor
7405
Is VBE between
200mV to 30mV & V
approximately 500mV
otection mode.
CB
”.
Yes
Check Horizontal
Deflection
Circuitry
Blank Screen
Blank Screen
Check Vg2
(fine tune)
Not Ok
Check Beam Current Limit
(voltage is 1.8V-2V when
brightness and contrast is
set to the maximum
Ok
Check heater voltage
(measure pin 9&10
at the CRT socket)
Check video supply
(2457) is approximately
180V
Ok
Not Ok
Ok
Picture
appears?
Picture not appearing
Check deflection
circuit
Picture not appearing
Picture
appears?
Ok
Not Ok
Replace transistor
E_14480_059.eps
170204
Figure 5-7 Fault finding tree “One thin vertical line”
One Thin Horizontal Line
Quick check:
•Set in pr
•LED blinking with error “2
Check all connection
(7451, 7523, 7543) at
Vertical Deflection Circuitry
otection mode.
One Horizontal
Thin Line
LED Blinking
and peripheral at
Deflection Circuit
in place
Check transistor
Check Vertical
Deflection Circuit
”.
Replace transistor
E_14480_060.eps
170204
Ok
Figure 5-9 Fault finding tree “Blank screen”
5.8.4 Sour
ce Selection
Set is not able to go into AV or any missing AV is
tered
encoun
E.g. AV1 is available but not able to enter to AV1: Check if the
option setting
Set is
is correct.
able to go to AV, but no audio is heard.
1. Check that continuity of signal is there from the SCART/
Cinch in
put to the input of the Hercules.
2. If continuity is there and
still no audio, check that option
settings are correct.
3. If logic setting is correct
and still no audio, proceed to Audio
Decoder/Processor troubleshooting section.
Set is able to go into AV but no video is available:
1. Check continuity from AV input to HERCULES depending
on th
e input.
2. If continuity is available and yet no video, proceed to Video
Pro
cessor troubleshooting section.
5.8.5 Tu
ner and IF
Picture
No
1. Che
ck that the Option settings are correct.
2. If correct, check that s
3. If supply voltages are p
upply voltages are there.
r
esent, check whether picture is
present in AV.
4. If picture is present in AV, check with the scope the T
IF output signal by manual storage to a known channel.
End
E_14480_061.eps
170204
uner
Figure 5-8 Fault finding tree “One thin horizontal line”
Page 17
Service Modes, Error Codes, and Fault Finding
EN 17L04E AA5.
5. If IF output is present, Tuner is working fine. If no IF output,
I2C data lines may be open, check continuity of I2C lines.
If I2C lines are ok, Tuner may be defect, replaced Tuner.
uner IF is present and yet still no picture in RF mode, go
6. If T
to
Video Processing troubleshooting section.
No Picture, No Sound
Yes
Check tuning
supply voltage,
pin 9 of tuner
>30V & <35V
Check supply
voltage, pin 7 of
tuner
5V
Yes
Check Tuner
pin 4 & 5
I2C Bus
Check
V
Supply
No
T
Section
Check Power
No
Supply
No Picture,
No Sound,
Raster Ok
Check AGC
Voltage, pin 1
of tuner
AGC voltage
changes with
different signal
strength
No
Check AGC
circuit section
Picture Ok, No Sound
Picture Ok,
No Sound
Check IF output of
tuner, pin 11
CVBS
present?
Yes
Check SAW filter output
(pin 4&5)
EU/AP/CH (QSS)- 1001
NA/LA/AP INT - 1002
Output Ok?
Yes
No
No
Refer to fig.
"Power Supply:
Set not working"
Replace SAW
filter
Ok
Yes
Replace Tuner
No
Check other
functional area
E_14480_062.eps
Figure 5-10 Fault finding tree “No picture, no sound”
170204
Check other
functional area
E_14480_063.eps
170204
Figure 5-11 Fault finding tree “Picture ok, no sound”
Unable To Perform Tuning
Unable to
perform tuning
Enter SDM
check optionbyte 1
Correct
Check if tuner
Supply Voltage
pin 7
Incorrect
5V
Yes
Check Tuner
Supply Voltage
Check I2C at pin
4 & 5 and tuner
Ok
Check other
functional area
Enter SDM and change
to the appropriate byte
Check Power
No
Supply
No
33V
Yes
Not Ok
Check I2C
circuit
Not Ok
I2C
Not Ok
E_14480_064.eps
Replace
Tuner
Not Ok
Tuner
170204
Figure 5-12 Fault finding tree “Unable to perform tuning”
5.8.6Con
t
roller
Below are some guidelines for troubleshooting of the Micro
Controller function. Normal
ly Micro Controller should be
checked when there is a problem of startup.
V
1. Check that both +3.3 V_dc and +1.8
_dc are present.
2. Check that crystal oscillator is working.
Page 18
EN 18L04E AA5.
Service Modes, Error Codes, and Fault Finding
3. Check that Power Good signal is at “high” logic, normal
operation.
4. Check th
at HERCUL
ES is not in standby mode. Pin 15 of
HERCULES should be 0 V_dc.
5. Make sure H-drive pulse is there. This can
resistor R3239. If H-drive does not exist, remove resistor
R3239 to check if there is loading.
Note: When the set shuts down after a few second after power
“on”, t
he main cause is that Vg2 not aligned properly, try
adjusting Vg2 during the few seconds of power “on”.
5.8.7Video Pro
cessing
No Picture
When “no picture in RF”, first c
eck if the microprocessor is
h
functioning ok in section “Controller”. If that is ok, follow the
next steps.
When “no picture in AV”, first check if the video
select
ion is functioning ok in section “Source Selection”. If that
is ok, follow the next steps.
1. Check th
at normal operatin
2. Check that there is video signal a
g conditions are met.
t pin 81. If no video,
demodulator part of the HERCULES is faulty, replace with
new HERCULES.
3. If video
signal is available at
pin 81, check pin 56, 57, and
58 for the RGB signal.
4. If signal is not available, try checking the BRIGHTNESS
and/or CONTR
5. If still wi
AST control, and make sure it is not at zero.
th the correct settings and no video is available,
proceed to the CRT/RGB amplifier diagram.
For sets with TDA9178, follow steps below:
Option Byte 2 bit 4 to “0”; if video
1. Put
signal is not available,
then check fault finding section “Controller”, Section
“Source Selection”, and steps above.
but n
2. If video is available
ot correct, put Option Byte 2 bit 4
to “1”, then check if LTI panel is present. If not, put LTI
panel in the main chassis (connector 1221).
3. If LTI p
anel is in main chassis, check cable between LTI
panel and main ch
assis (position is 1206). If it is
connected, then the LTI panel is faulty, replace it.
For sets with Scavem, and Scavem does not work, follo
below:
1. Check Scavem coil con
nector (position is 1361) if
connected; if not, connect it.
2. If conne
cted, check NVM “bit sto
rage” byte 1 bit 7; if it is not
“1”, set it to “1”.
3. If it is “1”, then check the data of the NVM addresses as in
the next table. If the da
ta is not correct, then set these
addresses to diagram values.
4. If it still not wo
rks, track Scavem
output from pin64 of
HERCULES to CRT panel.
Table 5-5 NVM default values for Scavem
be checked at
source
w
steps
5.8.8 Au
dio Processing
No
Sound
Picture Ok,
No Sound
Tuner IF OkCheck T uner/IFNot Ok
Ok
Check AUDOUTLSL &
AUDOUTLSR pin at
Hercules
Ok
Check Audio
Amplifier
Not Ok
Not Ok
Check Hercules IC
Check Audio
Power Supply
Ok
Check Audio
Amplifier Circuit
and loud speaker
Ok
Check NVM
Not Ok
Figure 5-13 Fault finding tree “No sound”
No RF audio for QSS/Inter-Carrier stereo sets.
1. Check pin 99 and 100 for SIF signal (for QSS) or pin 104
and 1
05 for video with SIF (for Inter-Carrier)
signal is not present, check for the
2. If
QSS/FMI bit settings.
Check also the NVM data.
3. If signals are present and still no aud
io, check the audio
supply voltage +8V are present.
4. If still no aud
io signal at Hercules output, Hercules is faulty.
No AV audio.
1. Check troubleshooting methods in section “Source
Select
ion”.
2. Check the output of the Hercules to see if there is signal
available. If no,
check the normal operating condition and
also the NVM data.
aud
3. If still no
io signal at Hercules output, Hercules is faulty.
Note: If there is audio signal at Hercules output and no audio
at loudspeaker, procee
d to Audio Amplifier troubleshooting
methods.
Check Power
Supply
Replace Audio
Amplifier
E_14480_065.eps
170204
DescriptionAddress
)
(dec
Address
(hex)
Value
(hex)
SPR, WS1408C00
VMA, SVM1418D31
NVM_SOC_SMD1428E33
5.8.9 Audio Amplifier
No
RF as well as AV audio at the loudspeaker:
1. Check that the normal operation condition of the amplifier
t.
is me
2. If normal operation
conditions are met, check the continuity
from Hercules output to input of the amplifier.
y
3. If continuit
is there and still no audio, check speaker wire
connections. If still no audio, amplifier IC might be faulty.
Page 19
Block Diagrams, Testpoint Overviews, and Waveforms
6.Block Diagrams, Testpoint Overviews, and Waveforms
Wiring Diagram
19L04E AA6.
CVBS (YELLOW)
LEFT (WHITE)
RIGHT (RED)
HEADPHONE
RIGHT
SPEAKER
D
91
9P
1212
4P
1219
NC
4P
1206
RED
BLACK
SIDE
A/V PANEL +
HEADPHONE
1279
3P
to
SUB
WOOFER
(OPTIONAL)
PIP
F
NC
5P
1220
4P
1214
1252
1254
1278
TUNER
AQUADAG
DEGAUSSING COIL
CRT
16:9
ROTATION
BLUE
RED
FRAME
COIL
B
YELLOW
ORANGE
SCAVEM
COIL
EHT
CRT
BLACK
RED
LEFT
SPEAKER
TOP CONTROL PANEL
E
1010
3P
(component view)
CRT PANEL
B
5P
1351
7P
1352
1332
CRT
SOCKET
1361
3P
CRT PANEL
1381
3P
FRONT INTERFACE
1693
6P
7P
1504
2P
5P
4P
MONO
A
CARRIER
3P
LTI/
H
CTI
1401
12P
5P
1451
2P
9P91
LOT
(track view)
LTI/CTI
H
INTERFACE
1216
1206
7P4P
4P5P 15
1215
1214
1212
12P
5P
1280
1207
TUNER
1682
3P
1206
7P
7P
1221
1204
7P
1212
1219
1505
2P
1404
2P
5401
J
1693
6P
1212
2P
LINEARITY&
G
PANORAMA
1462
3P
1464
2P
1461
2P
MAINS
SWITCH
1211
MAINS
CORD
2P
1005
3P
COMPAIR
CONNECTOR
E_14480_080.eps
170504
Page 20
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Supply and Deflection
20L04E AA6.
SUPPLY AND DEFLECTION
SUPPLY
FRONT INTERFACE
J
1211
A1
1505
1505
1
2
1231
MAINS
SWITCH
(not USA)
POWER SUPPLY
Degaussing
1506
OR
MAINS
SWITCH
(not USA)
I511
6512
3519
7532
F508 268V
/ div DC
F511 15V5 / div DC
F531 2V7 / div DC
F537 0V (N.A.)
Coil
2511
6533
3530
I531
1212
1504
1500
T4E
7511
TEA1506T
2
Vcc
CONTROL
6
CTRL
STANDBY
SUPPLY
7531
TEA1620
3
Vcc
CONTROL
6
REG
11
AUX
F552 130V
F561 15V9
F564 9V4 / div DC
F573 0V (N.A.)
1
2
5500 :
5502
DRAIN
IC
IC
SOURCE
DRIVER
SENSE
DEMAG
DRAIN
3507
t
14
/ div DC
/ div DC
I513I516I519I533
11
9
7
14
12
6532
LINEARITY & PANORAMA
TO 1221
A5
CONNECTIONS
G
ONLY FOR:
28"WSRF LA/NA
32" WSRF LA/NA
28" WS-SF LA
1404
4
1
1462
1
2
3
+9V
I2SD/1
7460
ACTIVATING
CIRCUIT
2466
LINEARITY AND
PANORAMA
CORRECTION
2474
2475
7462
7463
2464
2467
1463
1461
4
1
HOR.
DEFL.
COIL
DEFLECTION
HERCULES
Vbatt
-Vaudio
+Vaudio
+6VA
A4
A4
+3V
+6VA
+6VA
+6V
Vaux
2x
A4
INTF_Y GREEN_IN
A5
EHTinfo
A2
F401 130V
F402 32V8
56
97
7200-H
(SYNC)
VIDEO
IDENT
MAIN
SYNC
SEPARATOR
EHTo
/ div DC
/ div DC
2240
PHI 1
DETECTOR
VERTICAL
SEPARATOR
HORIZONTAL
GENERATOR
PROTECTION
SYNC
F412F414
2V
/ div DC
20µs
/ div
7541
1503
43
ENERGIZING
2
6500
AC
I513
3513
3514
I519
3532
3517
3518
I533
2534
3538
3534
3531
F508
2505
DC
5520
I516
7514
9
8
4
5
3
2
4
3
35321532
1A
5531
4
5
1
2
6511
G
7512
MAIN
SUPPLY
D
S
3516
CIRCUIT
1
(optional)
55515552
17
18
5562
13
14
5561
10
11
1
7515
TCET1103
2
6564
6535
10
9
6536
8
6
6551
6563
6562
3571
6573
F552
1543
7571
REFERENCE
7573
6565 6566
2564
2535
2536
V_DG
6571
CIRCUIT
+3V3
STANDBY
CIRCUIT
3565
F536
6537
S
G
7536
7561
D
I573
6676
7535
For IDTV only
F563
F561
3575
3576
Stdby_Con
POWER-DOWN
F564
5537
F537
I548
F455F458F459
3232
112
OSC.
SAND-
CASTLE
X-RAY
VERTICAL
DIVIDER
200V
20µs
A2A2
EHTinfo
113116
VERTICAL
GUARD
DETECTOR
PHI 2
DETECTOR
VERTICAL
SAW-
THOOTH
/ div DC
/ div
Vguard
HORIZONTAL
OUTPUT
E/W
+
GEOMETRY
VERTICAL
OUTPUT
+
GEOMETRY
F418
5V
/ div DC
20µs
/ div
F460F461
R.G.B.
BLANKING
F452 -13V4
F453 190V8
62
63
108
106
107
TO RGB
PROC.
HDRIVE
HD
7207
SANDCASTLE
A5
HD_PIP
3291
SEE BLOCK DIAGRAM VIDEO
/ div DC
/ div DC
A5
EW_DRIVE
VDRA
VDRB
I416I417I468I423I433I462
LINE + FRAME DEFLECTION
A2
LINE
HD
6486
-9V
5402
7404
E/W
+8V
+8V
34203440
7410
I417
7484
3498
FRAME
+9V
F460
F461
74557456
3462
F412
+6VA
BU4508DX
F418
7406
3463
7408
7405
3497
F414
LINE
OUTPUT
CIRCUIT
+
E/W
CORR.
7452
3465
-12V
7411
7454
1404
1
2
Vbatt
OR
7451
7453
F402
6401
5445
3
1
FOCUS
10
HOR.
DEFL.
COIL
6
5
7
8
9
SEE BLOCK DIAGRAM VIDEO
3474
F458
3466
1491
1
2
VER.
DEFL.
COIL
F459
3461
FRAME_FB
3471
EHT
VD
Vguard
VG2
1454
3442
6481
Vbatt
A5
A4
CRT
I433
TO
B1
3481
3410
3411
+Vbatt
3451
2403
6452
64836484
3458
6453
3484
3485
6456
1452
3457
2456
3455
6459
7401 : 7403
7480 : 7483
EHTb
EHTinfo
PROC.
Vbatt
+
+
BCL
F452
F453
F455
6454
6455
FILAMENT
VIDEO/SUPPLY
3401
F401
POWER-DOWN
FRAME_FB
EHTb
EHTinfo
BCL
VIDEO/SUPPLY
FILAMENT
EHTb
VT_SUPPLY
A4
A1
A4
A4
-12V
+9V
1401
5
4
TO 1351
3
B1
2
CRT
1
100V
5µs
/ div DC
/ div
100V
5µs
/ div DC
/ div
2V
5µs
/ div DC
/ div
100V
5µs
/ div DC
/ div
HOT GROUND COLD GROUND
5V
20µs
/ div DC
/ div
20 V
5ms
/ div DC
/ div
1V
5ms
/ div DC
/ div
500mV
5ms
/ div DC
/ div
500mV
5ms
/ div DC
/ div
500mV
20V
/ div DC
20µs
/ div
20µs
/ div DC
/ div
10V
20µs
/ div DC
/ div
10V
20µs
/ div DC
/ div
10V
5ms
/ div DC
/ div
5V
5ms
/ div DC
/ div
E_14480_081.eps
060504
Page 21
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagrams, Testpoint Overviews, and Waveforms
Block Diagram Audio/Control
AUDIO
TUNER IF
A3
+5V
+5VS
SDA
A4
SCL
A4
SEL-LLPIM
A4
REAR I/O SCART
A8
SCART 1
SCART 2
SIDE AV
D
L
R
9002
6
3
2
1
6
3
2
1
FM
3001
3000
VT_SUPPLY
A2
50019003
1000 6, 79
2
ERR
10
TV
I002
I001
1252
3
1
FM-RADIO
TUNER
+
TV TUNER
5
4
7001
FILTER
SELECTION
A5
1207
3
1
6001
BZX79-C33
VT
F002
10
FM
F004
11
IF
AGC
1
CONNECTIVITIES
SIDE_L_IN
SIDE_R_IN
SC1_L_IN
SC1_R_IN
SC2_L_IN
SC2_R_IN
7003
1002
1003
1004
SSIF
VIF_1
VIF_2
RF
SIF1
SIF2
A4
24
25
31
29
30
HERCULES
7200-A (IF)
PHASE
DISC
VIDEO
IF
TUNER IF
AGC
AUDIO IF
QSS/AM
VCO
VIDEO
DEMOD
PLL
To VIDEO PART
see block diagram
VIDEO
PLL
SOUND
MIXER
AM
SOUND
DET.
FM/QSS
24L04E AA6.
REAR I/O SCART
A8
37643761
12781254
1
2
3762
3757
L 8 Ohm/15W
R 8 Ohm/15W
7200-F (AUDIO)
DIGITAL PART
SC1_L_OUT
FM/QSS
SSIF
96
AM
INTF_R_IN 75
N.C.
INTF_L_IN 76
SC2_R_IN 72
SC2_L_IN 73
SIDE_R_IN 79
SIDE_L_IN 80
AM
SC1_R_IN 94
SC1_L_IN 95
FM
DEM.
AMPLI
+
MUTE
MAIN_OUTL
MAIN_OUTR
AUDIO
SOURCE
SELECTION
AUDIO AMPLIFIER
A7
A4
VOL_MUTE
PROCESSING
DECODER
7991
7992
VOLUME
+
MUTE
DIGITAL
SOUND
DIGITAL
STEREO
SOUND
ERR
19
I951
I952
7990
TDA2616Q
1
9
2
7991
ADCDAC
AUDIO
SELECT
AUDIO
SELECT
V AUDIO+1
7
5
-V AUDIO
SCART
CINCH
OUTPUT
OUTPUT
OUTPUT
F952
4
F955
6
93
SC1_R_OUT
92
SC2_L_OUT
67
HP
LS
66
68
69
SC2_R_OUT
MAIN_OUTR
MAIN_OUTL
A4
A4
1281
5
2
1280
1
2
Stby_Con
POWER_DOWN
OR
SCART 1
6
3
2
1
SCART 2
6
3
2
1
7705
5
2
L 8 Ohm/15W
R 8 Ohm/15W
SIDE AV
D
5
2
4
1
MUTING
7993, 7994
MUTE
77037702
MUTING
SPDIF
(optional)
1228
SUBWOOFER
(optional)
MONITOR
OUT
L
R
A5
1
2
3
CONTROL
FRONT INTERFACE
J1
(PARTLY)
6692
TSOP1836
+3.3V
ON/OFF
USA only
6693
6691
KEYBOARD
LIGHT_SENSOR
LED
TOP CONTROL
E
LOCAL
KEYBOARD
FRONT CONTROL
A9
1693
3
IR
4
5
6
1693
3
4
5
6
6693
6692
TSOP1836
+3.3V
LOCAL
KEYBOARD
(USA only)
F692
+
ON/OFF
6691
1010
2
LED
KEYBOARD
LIGHT_SENSOR
LIGHT_SENSOR
LED
KEYBOARD
IR
OR
IR1
OR
HERCULES (CONTROL)
A4
1682
2
KEY_PROTN9
IR32
LED30
LIGHT-SENSOR14
POWER_DOWN 31
A1
1205
24MHz
7200-G (Control)
TDA12001H1
I/O PORTS
IIC BUS
TRANSCEIVER
PWM
OUTPUTS
TELETEXT
(close caption)
ROM
119
118
+
+
+
CPU
+
+
RAM
ERR
20
22
3207
20
3214
21
2
1
18
15
17
16
23
24
25
SEL_SC2_INTF
+3.3V
VOL_MUTE
Stdby_Con
7205
SEL_LLPIM
Reset__5V
WRITE_PROTECT
+3.3V
32043202
32803279
3266
3265
ROT
I2SD/1
SDA
SCL
E
D
DIAGRAM
A7
A1
A7
B2
A3
A5
G
A5
A5
see
IIC
(FOR LTI
AND PIP)
A5
FEATURES
EEPROM
(NVM)
7
ERR
8
6
5
9
+3.3V
36043605
see
IIC
DIAGRAM
SERVICE JUMPER
9275
SDM
9252
F003 0V (N.A.)
F201 2V / div DC
F203 2V / div DC
F004I001I002
/ div AC
200mV
10ms / div
F205
500mV
/ div DC
10ms / div
50mV / div AC
2ms / div
F692
2V / div DC
2ms / div
1V / div DC
20µs / div
F206
1V / div DC
20µs / div
I952I951F952F955
50mV / div AC
2ms / div
500mV / div AC
1V / div DC
20µs / div
2ms / div
500mV / div AC
2ms / div
E_14480_087.eps
280504
Page 25
Block Diagrams, Testpoint Overviews, and Waveforms
I2C and Supply Voltage Overview
SUPPLY LINES DIAGRAM
POWER SUPPLY
A1
SUPPLY
PRIMARY
SIDE
5520
9
8
4
5
3
2
3
4
3532
5531
4
5
1
2
HOT GROUND COLD GROUND
7541
1503
43
ENERGIZING
1
2
55515552
17
18
5562
14
13
5561
10
12
1
7515
TCET1103
2
10
8
6
CIRCUIT
(optional)
6551
6563
6562
6564
6535
6536
6537
3571
6573
2564
2535 6676
2536
1543
6571
7571
REFERENCE
CIRCUIT
7573
STANDBY
CIRCUIT
6565 6566
V_DGV_DG
3575
3576
+3V3
STDBY_CON
POWER-DOWN
7561
3565
5537
D
S
7535
G
7536
only used in sets with DVD
Vbatt
-Vaudio-Vaudio
+Vaudio
+6VA
AUDIO_AMPLIFIER
A7
Vaudio+1
CLASS D
A6
AUDIO AMP
(RESERVED)
+Vaudio
A4
A4
+6VA
+3V
+6VA
+6V
Vaux
2X
2X
2X
1903
see diversity table
*
+6VA
HERCULES
A4
+3V
+3.3V
Stdby_Con
A1
POWER_DOWN
A1
+5V
+Vbutter
+6V
+8V
9911
9910
25L04E AA6.
LINE + FRAME DEFLECTION
A2
+Vbatt
FILAMENT
To 6403, 3480,
3420, b-7401,
c-7403
on
To
VERTICAL
DEFLECTION
7605
7604
3609
A2
Vbatt
1401
1
2
3
4
5
+3V (N.C.)
+6V
+6VS
+3.3V
+5V
5445
3
1
1404
1
2
+
E/W
HOR.
DEFL.
COIL
7990
TDA2616Q
5
OUTPUT
7
AUDIO
Vaudio+1
5402
A4
EW_DRIVE
7405
LINE
OUTPUT
CIRCUIT
CORR.
7404
HDRIVE
A4
To 6407
on
A2
3401
VT_SUPPLY
*
V_DG
7200
HERCULES
19
35
125
15
31
+3.3V
+5V
+Vbutter
+6V
+8V
PWM1
115
16
+6VA (To 3445)
DECDIG
6207
3217
3295
2204
7202
VT_SUPPLY
2X
3210
3211
3206
3209
3208
7210
G
7204
7201-2
7203
7201-1
7209
D
S
D
G
S
+3V
+1.8V_A
+1.8V_B
EHT
FOCUS VG2
10
BCL
6
5
7
8
9
1454
6453
6456
34572456
3455
TO
CRT
B1
6452
3458
3484
3485
1452
6459
+3V
+6V
VT_SUPPLY
RESET +5V
A4
Vbatt
6483 6484
To 3405, 3463,
3475
on
A2
VIDEO SUPPLY
6455
3606
6454
4604
FILAMENT
VIDEO SUPPLY
-12V
+9V
7603
L78L33ACZ
13
3608
3607
CRT
B1
1351
A5
+9V
VSVM
1
+200V
2
FILAMENT
3
4
5
FEATURES & CONNECTIVITIES
+9V
+3.3V
1X
2X
+5V
1X
4611
B2
FILAMENT
3639
3610 6610
9605
SCAVEM
VSVM
FILAMENT
+200V
3351
F1
1212
962
+200A
1221
1
+9V
1212
12
+9V
+9V
+9VA
+9VA_1
+8V
Vbuffer
PIP POWER SUPPLY
+9V
3505
7502
5501
+3V3
5502
7501
MC34063AD
SUPPLY
6502
IC
+8V
Vbuffer
6509
6503
-/B33
TUNER IF
A3
+5V
5001
+5V
VT_SUPPLY
REAR I/O CINCH
A8
Vbutter
FRONT CONTROL
A9
+5V
1X
1X
1X
6504
5507
????
PIP TUNER IF
F2
9002
6001
-/C33
36903693
6694
-/C5V1
FRONT INTERFACE
J
1693
LINEARITY & PANORAMA
G
1462
1
LTI/CTI
H
1212
3610
5504
5506
5220
5010
6610
9V
12
2507
9613
+5V
+3V3
+5VS
+5VA
+33V
To TUNER
Pin 6.7
To TUNER
Pin 9
Vbutter
To LED
To 3-6692
(IR_REC)
+6V
+9V
+8V
1693
1216
1
4
I2C BUS INTERCONNECTION DIAGRAMPIP MODULE
A4
HERCULES
7200
SET
PROCESSOR
PART OF
VIDEO-
PROCESSER
(HERCULES)
ERR
19,20
+3.3V
+3.3V
3202
20
21
22
+3.3V
3279 3280
2
1
3207
3214
62116210
+3.3V
3266
3265
3204
SDA
SCL
WRITE_PROTECT
E
D
A5
ERR
6
FEATURES & CONNECTIONS
+3.3V
3601
56
7601
PCF8511
EEPROM
7
(NVM)
ERR
9
TUNER IF
A3
12061206
E
1
D
3
36043605
30003001
54
1000
TUNER
ERR
10
COMPAIR
1005
1
2
3
For
only
LTI/CTI INTERFACE
H
1
3
1411
7610
TDA9178T
LTI/CTI
PROC.
ERR
15
SDA
SCL
36173616
F1
12151214
1
3
PIP POWER SUPPLYTUNER IF
32433244
56
7242
SDA9488X
PIP
PROC.
ERR
12
SDA
SCL
1
3
F2A5
30013002
54
1000
UV1316
TUNER
PIP
ERR
4
1011
7201
TDA9887
PIP
IF
DEMO.
ERR
16
32063207
ERROR CODE LIST
ERROR Device Error description Check item Diagram
0 Not applicable No Error
1 Not applicable X-Ray / over-voltage protection
2 Not applicable High beam (BCI) protection 3404, 7405 A2
3 Not applicable Vertical guard protection 3466, 7451, 7452, 7453,
4 Tuner UA1316/A I2C error while communicating
5 Not applicable +5v protection 7604, 7605 A5
6 I2C bus General I2C error 7200, 3207, 3214 A4
7 Not applicable - - 8 Not applicable - - 9 24C16 I2C error while communicating
10 Tuner = I2C error while
11 TDA6107/A Black current loop instability
12 SDA9488X I2C error while communicating
13 Not applicable - - -
14 DVD Loader I2C error while communicating
15 TDA9178T/N1 I2C error while communicating
16 TDA9887 I2C error while communicating
17 Not applicable - - -
18 Not applicable - - 19 TDA1200 I2C error while communicating
20 TDA1200 I2C error while communicating
(US only)
with 2nd tuner
with the EEPROM
communicating with the PLL
tuner
protection
with the PIP processor
with the DVD Interface module
with LTI module
with PIP_Demodulator
he Service Default Mode (SDM) and Service Alignment
•T
Mod
e (SAM) are described in chapter 5 “Service Modes,
...”.
u navigation is done with the CURSOR UP, DOWN,
•Men
LEF
T, or RIGHT keys of the remote control transmitter.
8.1General Alignment Conditions
Perform all electrical adjustments under the following
conditions:
e
•AC voltag
and frequency: 120 V_ac / 60 Hz or 240 V_ac /
50 Hz (region dependent).
•Connect the set to the Mains voltage via an isolation
transformer wit
h a low internal resistance.
•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.
est probe: Ri > 10 Mohm; Ci < 2.5 pF.
•T
•Use an isolated trimmer / screwdriver to perform the
alignments.
8.2Hardware Alignments
5. SATURATION/COLOR
6. CONTRA
7. BRIGHTNE
ST to “0”.
SS to minimum (OSD just visible).
to “0”.
8. Return to the SAM via the MENU key.
9. 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) with a signal
strength of 1 V_pp.
10. Set the channel of the oscillos
cope to 50 V/div and the time
base to 0.2 ms (external triggering on the vertical pulse).
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).
11. Measure the cut off pulse during first full line after
blanking (see
figure “V_cutoff waveform”). 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.
12. Sele
ct the cathode with the highest V_dc value for the
alignmen
t. Adjust the V_cutoff of this gun with the
SCREEN potentiometer (see figure “Top view family
board”) on the LOT to 160 V_dc, except for the 25/28BLD
picture tube (Black Line Display, for EU only); this tube
must be aligned to 140 V_dc.
13. Restore BRIGHTNESS and
CONTRAST t
o normal (= 31).
max.
V
CUTOFF
[VDC]
the frame
D
1005
ComPair
7990
1000 (TUNER)
7601
1204
9252
SDM
9275
1221
0V Ref.
E_06532_011.eps
110204
Figure 8-2 V_cutoff waveform
1504
C
1506
8.2.2Focusin
g
1. Tune the set to a circle or crosshatch test pattern (use an
external video p
2. Choose pictur
attern generator).
e mode NATURAL (or MOVIES) with the
SMART PICTURE button on the remote control
transmitter.
3. Adju
Focus
Screen
5512
B
LOT
VG2
E_14480_030.eps
130204
A
st the FOCUS potentiometer (see figure “Top view
family board”) u
ntil the vertical lines at 2/3 from east and
west, at the height of the centreline, are of minimum width
without visible haze.
Figure 8-1 Top view family board
8.2.1Vg2 Adjustment
1. Activate the SA
2. Go to the WH
M.
ITE TONE sub menu.
3. Set the values of NORMAL RED, GREEN and BLUE to
“32”.
4. Go, via the MENU key, to the normal user menu and set
Enter the Service Alignment Mode (see also chapter 5 “Service
Modes, ....”). The SAM menu will now appear on the screen.
Select one of the following alignments:
•Options
uner
•T
•White Tone
•Geometry
•Audio
8.3.1Options
Options a
featur
re used to control the presence/absence of certain
es 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 (OP1.. OP7) with the MENU UP/
DOWN keys, and enter the new value.
Leaving the OPTION submenu saves the changes in the
Option Byte settings. Some changes will only take effect after
the set has been
switched “of
f” and “on” with the AC power
switch (cold start).
How to calculate the value of an Option Byte
•Calculate an Option Byte value (OP
1 .. OP7) in the
following way:
•Check the status o
f the single option bits (OB): are they
enabled (1) or disabled (0).
abled
•When an option bit is en
(1) it represents a certain
value (see column “Bit value” in table below). When an
option bit is disabled, its value is 0.
l value
•The tota
of an Option Byte (decimal) is formed by the
sum of its eight option bits. The factory values are printed
on a sticker on the CRT.
•Option Byte 6 (OP6)
– OB67: PERSONAL ZAPPING
– OB66: Reserved (value= 0)
– OB65: FM
– OB64: CO
– OB63: ACTIVE CONTROL
– OB62: VIDE
– OB61: LIGHT SENSOR
– OB60: DUAL TEXT
•OB17: PHILIP
– 0 : ALPS / MASCO compatible tuner is in use.
– 1 : Philips compatible tuner is in us
•OB16: FM
– 0 : FM radio feature
– 1 : FM radio feature
•OB15: LNA
RADIO
PNP
IN MODE
I
ANNEL NAMING
I
NING
PIP
UAL DOLBY
LTA VOLUME
I
V
TEL MODE
TRAP
MB FILTER
O TEXT
S TUNER
RADIO
ION
R
e.
is disabled or not applicable.
is enabled.
– 0 : Auto Picture Booster is not available or not
applicable.
– 1 : Auto Picture Booster
•OB14: ATS
– 0 : Automatic Tuning System (ATS
or not applicable.
– 1 : ATS feature is enabled. When ATS is enabled, it
sorts the program in an ascending order starting from
program “1”.
13: ACI
•OB
– 0 : Automatic Channe
disabled or not applicable.
– 1 : ACI feature is enabled.
•OB12: UK PNP
– 0 : UK's default Plug
not applicable.
– 1 : UK's default Plug and Play setting
– When UK PNP and V
initial setup and after exiting from menu, VIRGIN
MODE will be set automatically to “0” while UK PNP
remains “1”.
•OB11: VIRGIN MODE
– 0 : Virgin mode is disabled or not applicable.
– 1 : Virgin mode is enabled. Plug and Play menu item
will be displayed to p
startup of the TV when VIRGIN MODE is set to “1”.
After installation is finished, this option bit will be
automatically set to “0”.
10: CHINA
•OB
– 0 : Tuning is not for China set, or th
applicable.
– 1 : Tuning is for China set.
Option Byte 2 (OP2)
•OB
27: SC
– 0 : Soft clipping is disabled.
– 1 : Soft clipping is enable
•OB26: GREEN UI
– 0 : Green UI is disabled
– 1 : Green UI is ena
– Note: only for NAFTA region.
•OB25: CHANNEL NAMING
– 0 : Name FM Channel is disabled or not applicable.
– 1 : Name FM Channel is enabled.
– Note : Name FM channel can be enabled only when
M RADIO= “1”.
F
24: LTI
•OB
– 0 : Luminance Transient Improveme
or not applicable.
– 1 : LT
•OB23: TILT
– 0 : Rotate Picture is disabled or not applicable.
– 1 : Rotate Picture is enabled.
•OB22: FINE TUNING
– 0 : Fine Tuning for Channel Offset
– 1 : Fine Tuning for Channel Offset is enabled.
•OB21: PIP PHILIPS TUNER
– 0 : ALPS / MASCO compatible tuner is in use for
– 1 : Philips compatible tune
•OB20: HUE
– 0 : Hue/Tint Level is disabled or not applicable.
– 1 : Hue/Tint Level is enabled.
Option Byte 3 (OP3)
•OB
– 0 : EW function is disabl
– 1 : EW function is enabled. In this case, b
•OB
– 0 : Software selection no PIP
– 1 : Software selection with PIP
I is enabled.
applicable.
module.
37: EW FUNCTION
4:3 is allowed, Compress 16:9 is not applicable.
4:3 and Compress 16:9 are applicable.
36: 2 TUNER PIP
is available.
) feature is disabled
l Installation (ACI) feature is
and Play setting is not available or
is available.
IRGIN MODE are set to “1” at the
erform installation at the initial
is option bit is not
d.
(for Philips brand).
bled (for Magnavox brand).
nt (LTI) is disabled
is disabled or not
r is in use for PIP module.
ed. In this case, only Expand
oth Expand
PIP
Page 70
EN 70L04E AA8.
Alignments
– Note: Only for EU/AP region for sets with PIP.
•OB35: PIP SPLITTER
– 0 : Normal Tuner in PIP
– 1 : Splitter in
– Note: Only for EU/AP region. For PIP sets and build in
with Splitter
•OB34: SP
– 0 : Normal Tuner for main chassis
– 1 : Splitter
– Note: Only for EU/AP re
•OB33: VIR
– 0 : Virtual Dolby is not applicable.
– 1 : Virtual Dolby is applicable.
•OB32: WIDE
– 0 : Softwar
– 1 : Softwar
•OB31: WSSB (EU)
– 0 : WSSB is
– 1 : WSSB is
– Note : This option bit can
SCREEN= “1”.
•OB30: ECO SUBWOOFER
– 0 : Feature is disabled or not applicable.
– 1 : Feature is enabled.
Option Byte 4 (OP4)
•OB47: Reserved
– Default setting is “0”.
•OB46: Reserved
– Default setting is “0”.
•OB45: ULTRA BASS
– 0 : Ultra B
– 1 : Ultra B
– Default setting is “0”.
•OB44: DELTA VOLUME
– 0 : Delta Volume Level is disabled or not applicable.
– 1 : Delta Volume Level is enabled.
•OB43: Rese
– Default setting is “0”.
•OB42: VO
– 0 : Volume Limiter Level is disabled or not applicable.
– 1 : Toggle Volume Limiter Level is enabled.
•OB41: Reserved
– Default setting is “0”.
•OB40: STEREO NICAM 2CS
– 0 : For AV Stereo.
– 1 : For NICAM Stereo 2CS.
Option Byte 5 (OP5)
•OB57: AV
– 0 : AV1 source is not present.
– 1 : AV1 source is present.
•OB56: AV
– 0 : AV2 source is not present.
– 1 : AV2 source is present.
– Note : For EU, when AV2=“1”, both EXT2 and SVHS2
should
•OB55: AV
– 0 : Side/Front AV3 source is not present.
– 1 : Side/Front AV3 source is present
•OB54: CVI
– 0 : CVI source is not available.
– 1 : CVI source is available.
•OB53: SV
– 0 : SVHS2 source is not ava
– 1 : SVHS2 source is av
– Note : This option bit is not applicable for EU.
•OB52: SV
– 0 : SVHS3 source is not ava
– 1 : SVHS3 source is av
– Note : This option bit is not applicable for EU.
•OB51: HOTE
– 0 : Hotel mode is disabled or not applicable.
– 1 : Hotel mode is enabled.
PIP
in PIP tuner.
LITTER
Tun
er for main chassis
TUAL DOLBY
SCREEN
e is used for 4:3 sets or not applicable.
e is used for 16:9 sets.
disabled or not applicable.
enabled.
ass is disabled or not applicable.
ass is enabled.
rved
LUME LIMITER
1
2
be included in the OSD loop.
3
HS2
HS3
L MODE
gion.
be set to “1” only when WIDE
.
ilable.
ailable.
ilable.
ailable.
•OB50: Reserved
– Default setting is “0”.
Byte 6 (OP6)
Option
•OB67: PERSONAL ZAPPING
– 0 : Personal Zapping feature is disabled or not
ap
plicable.
– 1 : Personal Zapping feature is enabled.
•OB66: Reserved
efault setting is “0”.
– D
•OB65: FM TR
– 0 : FM Trap is not present.
– 1 : FM Trap is present.
– Note: Only for LATAM region.
•OB64: COMBFILTER
– 0 : 3D-combfilter is not present.
– 1 : 3D-combfilter is present.
•OB63: ACTIVE CONTROL
– 0 : Active Control feature is disabled
– 1 : Active Control feature is enabled.
•OB62: VIDEO TEXT
– 0
ap
– 1 : Video Text (DW with TXT) is enabled.
– Note: For EU only.
•OB61: LIGHT
– 0 : Light sensor feature is disabled or not applicable.
– 1 : Light sensor feature is enabled.
•OB60: DUAL TEXT
– 0 : Dual Text and Text Dual
applicable.
– 1: Dual Text and Text Dual Screen are enabled.
Byte 7 (OP7)
Option
•OB77: TIME WIN1
– 00 : The time window is set to 1.2 s.
– 01 : The time window is set to 2 s.
– Note :The time-out for all digit entries depends on this
setting.
•OB76: Reserved
– D
•OB75: Reserved
– Default setting is “0”.
•OB74: Reserved
– D
•OB73: Reserved
– Default setting is “0”.
•OB72 Reserved
– Default setting is “0”.
•OB71 Reserved
– D
•OB70: Reserved
– Default setting is “0”.
3.2 Tuner
8.
No
te: Described alignments are only necessary when
(item 7601) is replaced.
IF PLL
This adjustment is auto-aligned. Therefo
required.
AGC (AGC take over point)
1. Set the external pattern g
signal and connect the RF output to aerial input. Set
amplitude to 10 mV and set frequency to 475 MHz.
nect a DC multimeter to pin 1 of the tuner (item 1000
2. Con
on th
e main panel).
3. Activate the
4. Go to the TUNER sub men
5. Select AGC with the UP/DOWN cursor keys.
AP
: Video Text (DW with TXT) is disabled or not
plicable.
SENSOR
efault setting is “0”.
efault setting is “0”.
efault setting is “0”.
enerator to a colour bar video
S
AM.
or not applicable.
Screen are disabled or not
the NVM
re, no action is
u.
Page 71
Alignments
EN 71L04E AA8.
6. Adjust the AGC-value with the LEFT/ RIGHT cursor keys
until the voltage at pin 1 of the tuner lies between 3.8 and
2.3 V (default value is “20”).
7. Switch the set to STAN
DBY, in o
rder to store the
alignments.
CL (Cathode drive level)
Always set to “5”.
8.3.3W
hite Tone
In the WHITE TONE sub
menu, the values of the black cut off
level can be adjusted. Normally, no align
ment is needed, and
you can use the given default values.
The colour temperature mode (NORMAL, COOL and WARM)
he colour (R, G, and B) ca
and t
n 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 colour 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:
RMAL:
•NO
– NORMAL R= “26”
– NORMAL G= “32”
– NORMAL B= “27”
The geometry alignments menu contains several items to align
the set, in order to obt
ain correct picture geometry.
1
2
3
4
5
6
7
8
VERT. SLOPE
VERT. SHIFT
VERT. AMPLITUDE
V.S-CORRECTION
HOR. SHIFT
HOR. AMPLITUDE
E/W PARABOLE
UPPER E/W CORNER
1. Connect an ex
ternal 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 475 MHz.
Smart Picture' to NATURAL (or MOVIES).
2. Set '
3. Activate the SAM menu (see chap
ter 5 “Service Modes,
...”).
4. Go to the GEOMETRY sub menu.
5. Choose HORIZO
NTAL or VERTICAL alignment.
Now the following alignments can be p
erformed:
Horizontal
•Horizon
al Parallelogram (HP). Align straight vertical
t
lines in the top and the bottom; vertical rotation around the
centre.
t
•Horizon
al Bow (HB). Align straight horizontal lines in the
top and the bottom; horizontal rotation around the centre.
horizontal lines if NTSC system is used (60 Hz) i.s.o. PAL
(50 Hz). Default value is “9”.
Vertical
•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).
h
•Vertical S
ift (VSH). Align the vertical centring so that the
test pattern is located vertically in the middle. Repeat the
'vertical amplitude' alignment if necessary.
e
•Vertical slop
(VS). Align the vertical centre of the picture
to the vertical centre of the CRT. This is the first of the
vertical alignments to perform. For an easy alignment, set
SBL to “on”.
•Vertical Am
plitude (VAM). Align the vertical amplitude so
that the complete test pattern is visible.
•Vertical S-Correction (VSC). Align
meaning that vertical intervals of a grid patte
the vertical linearity,
rn must be
equal over the entire screen height.
o
•Vertical Z
om (VX, if present). The vertical zoom is
added in for the purpose of development. It helps the
designer to set proper values for the movie expand or
movie (16x9) compress. Default value is “25”.
•V60 (Delta VAM for 60Hz, if present). A
lign straight
vertical lines if NTSC system (60 Hz) is used i.s.o. PAL (50
Hz). Default value is “-2”.
In the next table, you will find the GEOMET
for the d
o alignments are needed for the audio sub menu. Use the
ven default values.
gi
QSS (Quasi Split Sound)
•For NICAM/2CS sound system (EU/AP, except for
AP
NTSC), set to “On”.
•For A
•For all other sets (NAFTA/LATAM/AP-NTSC), set to “Off”.
V-Stereo sound system (sets without NICAM), set to
“O
n”.
values
ex)
(h
Default
values
(dec)
MI (Freq. Modulation Intercarrier)
F
•For NICAM/2CS sound system (EU/AP, except for
AP
NTSC), set to “On”.
•For AV-Stereo sound system (sets without NICAM), set to
“Off”.
•For dBx/non-dBx soun
NICAM Alignment
•For sets with NICAM/2CS (EU/AP, except for AP-NTSC)
soun
d system, set to “79”.
•For all other sets (NAFTA/LATAM/AP-NTSC), set to “63” (=
don’t care).
d systems, set to “On”.
Page 73
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 73L04E AA9.
9.Circuit Descriptions, List of Abbreviations, and IC Data Sheets
Index of this chapter:
1. Introduction
2. Power Supply
3. Deflection
4. Control
5. Tuner and IF
6. Source Selection
7. Video Proc
8. Audio Proc
essing
essing
9. Picture in Picture (PIP)
10. Abbreviations
11. IC Data Sheets
tes:
No
•Only
new (not recently published) circuits are described in
th
is chapter. For the other circuit descriptions, see the
L01.1/M8 Service Manual.
he descriptions below are a co
•T
py from the L04U manual,
therefore sometimes a reference is made to region specific
terminology or chassis (like the M8). Only the PIP
description is new.
igures can deviate slightly from the a
•F
ctual situation, due
to different set executions.
•For a good understanding of the following circuit
scriptions, please use the diagrams in sections “Block
de
Diagrams, ...”, and/or “Electrical Diagrams”. Where
necessary, you will find a separate drawing for clarification.
9.1Introduction
The "L04" chassis is a global TV chassis for the model year
2004 and is used for TV sets with large screen sizes (from 21
to 36 inch), in Super Flat and Real Flat executions (both in 4:3
and 16:9 variants).
There are three types of CRT namely the 100 degrees, 110
degrees and Wide
Screen CRT
•The 100 deg. 4:3 CRT is
not need East/West Correction (except when used in AP
regions), therefore the corrections needed are Horizontal
Shift, Vertical Slope, Vertical Amplitude, Vertical SCorrection, Vertical Shift, and Vertical Zoom for geometry
corrections.
he 110 deg. 4:3 CRT comes with East/West Cor
•T
In addition to the parameter mentioned above, it also
needs the Horizontal Parallelogram, Horizontal Bow,
Horizontal Shift, East/West Width, East/West Parabola,
East/West Upper and Lower Corners, and East/West
Trapezium correction.
he Wide Screen TV sets ha
•T
110 deg. 4:3 CRTs and also have additional picture format
like the 4:3 format, 16:9, 14:9, 16:9 zoom, subtitle zoom,
and the Super-Wide picture format.
In comparison to its predecessor (the L01.1/M8
has the following (new
•Audio:
The sound processor is part of the UOC processor
) features:
(called “Hercules”).
•Video: Enhanced video features, video
Control.
ontrol:
•C
Comparable to L01.1/M8 (e.g. Dual clock, I/O
mapping, I/O switching).
•Power Supply: Adapted to supply the
enable 0.5 W Standby power dissipation. Also provisions
are made for future extensions like DVD and iDTV.
The standard architecture consists of a Main pane
"family board"), a Picture Tube panel, a Side I/O panel, and a
Top Control panel. The Main panel consists primarily of
conventional components with some surface mounted devices
in the audio and video processing part.
.
raster-correction-free and does
ve all the correction of the
drivers, and Active
Hercules IC, and to
rection.
), this chassis is
l (calle
d
The functions for video/audio processing, microprocessor (P),
and CC/T
eletext (TXT) decoder are all combined in one IC
(TDA1200x, item 7200), the so-called third generation Ultimate
One Chip (UOC-III) or “Hercules”. This chip is mounted on the
“solder” side of the main panel, and has the following features:
•Control, small signal, mono/stereo, an
d exte
Video switching in one IC.
•Upgrade with digital sound & vide
•Alignment free IF, including
•FM sound 4.5/5.5/6.0/6.5,
o processing.
SECAM-L/L1 and AM.
no traps/bandpass filters.
•Full multi-standard color decoder.
•One Xtal referenc
e for all functions (microprocessor, RCP,
TXT/CC, RDS, color decoder, and stereo sound
processor).
The tuning system features 181 channels wit
display. T
he main tuning system uses a tuner, a
microcomputer, and a memory IC mounted on the main panel.
The microcomputer communicates with the memory IC, the
oard,
customer keyb
remote receiver, tuner, signal processor IC
and the audio output IC via the I2C bus. The memory IC retains
the settings for favorite stations, customer-preferred settings,
and service / factory data.
s
The on-screen graphics and clo
ed caption decoding are done
within the microprocessor where they are added to the main
signal.
P
The chassis uses a Switching Mode
ower Supply (SMPS) for
the main voltage source. The chassis has a 'hot' ground
reference on the primary side and a cold ground reference on
the secondary side of the power supply and the rest of the
chassis.
9.2Power Supply
9.2.1Block Diagram
Vbatt (to deflection & DVD interface board)
FILTER &
SWITCH
Degaussing Supply (V_DG)
Derived from =Vaudio
MH COIL
RELAY
DEGAUSS
RECTIFIER
MAIN SMPS
AUX SMPS
Figure 9-1 Block diagram power supply
Stdby_con signal
The Hercules generates this signal. This line is
under normal operation and in semi-Standby of the TV, and is
“high” (3.3 V) during Standby.
Power_down signal
The AUX SMPS generates this signal. It is logic “h
under normal operation of the TV and goes “low” (0 V) when the
AC power (or Mains) input voltage supply goes below 70 V_ac.
B (Hercules port)
This port is used to switch the AUX SMPS output V_aux “On/
Off”. This is required for DVD and iDT
Vaux (for IDTV)
B (connected to HERCULES port B to
switch ON/OFF Vaux)
(for future extensions).
V
nsive Audio/
h on-screen
E_14480_072.eps
logic “low” (0 V)
igh” (3 .3 V)
120504
Page 74
EN 74L04E AA9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.2.2Timing Diagrams
Power ON - To Standby - Out of
Power ON
3, 3.3, 6V
POWER_DOWN
STDBY
+1V8 EXT.
Stdby_con
Vbat, Vaudio
STB bit
VT_supply
PIP Supplies
Relay status
Normal
+5V
10mS
B
Closed
2s(ref)
200ms100ms(ref)
1s(ref)
To Standby
Standby - Power OFF
Out of Standby
Standby mode
Open
800ms
200ms
Normal
2s(ref)
Figure 9-2 Timing diagram Standby
Power ON - To Semi Standby - Out of Semi Stand
Power OFF
Power ON
3, 3.3,6V
STDBY
+1V8 ext
Stdby_con
Vbat, Vaudio
STB bit
VT_supply
+5V
PIP Supplies
B
Relay status
Normal
10mS
Closed
200ms 20ms (ref) 10ms(ref)
1s(ref)
2s(ref)
To Semi Standby Out of Semi Standby
Semi Standby Normal
Open
800ms
Figure 9-3 Timing diagram Semi Standby
9.2.3Startup Sequ
ence
When the set is connected to the AC power, the rectified line
voltage (via winding 4-5 of
L5531 connected to pin 14 of
IC7531) will start the internal voltage source to charge the V_cc
capacitor (C2532). The IC starts to switch as soon as the V_cc
reaches the V_cc start level of 9.5 V. This supply is
automatically taken over by winding 1-2, as soon as the V_cc
is high enough, and the internal supply source will stop (for high
efficiency switching).
Power off
20ms(ref)
Power OFF
Perform hard-reset
10ms(ref
10ms(ref)
E_14480_073.eps
by -
under start_up
Perform
sequence for details.
Hard-reset
10ms(ref)
E_14480_074.eps
Pin Symbol Description
12Sense This pin contains three different functions.: 1) Dectection of soft
14DrainThis pin is connected to the drain of the switch or center tap of
start, protection levels of 2) OCP, and 3) SWP.
the transformer. It contains three functions: 1) M-level (mainsdependent operation-enabling level), 2) Supply for star t- up
current, and 3) Valley detection.
As C2532 of IC7531 is charged, it will also start to charge the
(C2511) of IC7511. Via resistor R3519 and
V_cc capacito
r
C2511, the TEA1506 starts to switch as soon as the V_cc
voltage reaches the V_cc start level of is about 11 V. The V_cc
voltage is automatically taken over by the main transformer
L5512 (winding 2-3) when the V_cc is high enough (when this
voltage is even higher than the voltage on C2511, there is no
current flow from C2532 to C2511 due to diode D6512).
Table 9-2 Pinning overview TEA1506
200204
9.2.4 Stan
200204
Pin Symbol Description
2VccThis pin is connected to the supply voltage. When this voltage
is high (Vcc_start level, about 11 V), the IC will start switching.
When the voltage is lower than Vcc_uvlo (about 8.7 V), the IC
will stop switching.Note: This pin is not self supplied by internal
source like in TEA1507
3GndThis pin is Ground of the IC.
6CtrlThis pin is connected to the feedback loop. The pin will control
7Demag This pin is connected to the Vcc winding of 5512. It co ntains
the "on" time between 1 V to 1.5 V.
three functions: 1) During magnetisation, the input voltage is
sensed to compensate OCP level for OPP, 2) During
demagnetisation, the output voltage is sensed for OVP and 3)
a comparator is used to prevent continuous conduction when
the output is overloaded.
9Sense This pin contains three different functions: 1) dectection of soft
start, protection levels of 2) OCP, and 3) SWP.
11Driver This pin will drive the (MOSFET) switch.
12HVSThis is High Volt Spacer (n.a.)
14DrainConnected to the Drain of the external MOSFET switch, th i s i s
db
In this mode, IC7511 (TEA1506) will be totally disable
the input for valley sensing and initial internal supply.
y Mode
d. So
there is no voltage on the main transformer output. But IC7531
(TEA1523) will still work and will provide the necessary output
voltages (6V -> 5V, 3.3V, 3V -> 1.8V) to the Hercules (IC7200).
Table 9-3 PSU voltage overview
VoltageNormal operationStdby mode
V_batt130 - 143 V0 V
V_audio+/- 15.5 V0 V
+6V6 V6 V
+3V3 V3 V
Stdby_con0 V3.3 V
Table 9-1 Pinning overview TEA1523
Pin Symbol Description
2GndThis pin is Ground of the IC.
3V_ccThis pin is connected to the supply voltage. An internal current
5RCFrequency setting
6REGThis pin is connected to the feedback loop. The pin contains two
11Demag This pin is connected to the V_cc winding of 5531. It has three
charges the V_cc capacitor (2532), and the start-up sequence
is initiated when this voltage reaches a level of 9.5 V. Note: The
output power is disabled when the voltage gets below 9 V
(UVLO). Operating range is between 0 to 40 V.
ns: 1) Between 1 to 1.425 V it controls the "on" time. 2)
functio
Above the threshold of 3.5 V, it is possible to initiate "burst
mode" standby.
functi
ons: 1) During Magnetisation, the input voltage is sensed
to compensate OCP level for OP P. 2) During demagn etisation,
the output voltage is sensed for OVP and 3) A comparator is
used to prevent continuous conduction when output is
overloaded.
9.3Deflection
9.3.1 Synchronization
Before the Hercules (IC7200) can generate horizontal drive
pulses, the +3.3
start up command of the microprocessor (via I2C), the
Hercules outputs the horizontal pulses. These horizontal
pulses begin “initially” with double line frequency and then
change “gradually” to line frequency in order to limit the current
in the line stage (slow-start).
The VDRA and VDRB signals are the bala
(sawtoot
the Hercules). These output signals are balanced, so they are
less sensitive to disturbances.
V supply voltages must be present. After the
nced output currents
h shaped) of the frame oscillator (pins 106 and 107 of
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Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 75L04E AA9.
There is a current source inside the UOC at pin 102. This
pumps energy in the capacitor connected to this pin producing
a pure saw tooth. The vertical drive signals and the E/W
correction signal are derived.
Pin 108 is the East-West drive (or AVL), and it is a single ended
current output. T
EHT” from this pin is available by setting the HCO bit to “1”.
The Phase-2 Compensation available at pin 113 gives frame
correction for high beam curr
signal is used to correct the phase of the picture from the
horizontal drive signal.
Pin 63 is the SANDCASTLE output (contains all sync info) and
HORIZONTAL FLYBACK (HFB) input.
o
als
Pin 97 is the EHT tracking/over-voltage protection pin. T
HCO bit can switch on the tracking on EW. If the voltage at pin
97 exceeds 3.9 V, the over-voltage protection will be activated
and the horizontal drive is switched “off” via a slow stop.
9.3.2Ho
rizontal Deflection
here are several executions (depending on the CRT):
T
•Sets with no
horizontal deflection is based on the quasi-diode
modulation circuit. This horizontal deflection circuit
supplies the deflection current and auxiliary voltages from
the LOT.
•Sets with Eas
horizontal deflection is based on a diode modulator with
east-west correction. This horizontal deflection circuit
supplies the deflection current and auxiliary voltages from
the LOT.
•Sets with d
of the horizontal deflection is based on a diode modulator
with dynamic east-west correction for picture tubes with
inner pincushion. This horizontal deflection circuit supplies
the deflection current and auxiliary voltages from the LOT.
Basic Principle
During a scan period, either the Line T
conduct to ensure a constant voltage over the deflection coil
(that results in a linear current). During the flyback period, the
Line Transistor stops conducting, and the flyback capacitor(s)
together with the inductance of the deflection coil creates
oscillation.
First Part of Scan
Pin 62 of the UOC delivers the horizontal drive signal for the
Line Output stage. T
frequency. L5402 is the flyback drive transformer. This
transformer de-couples the line output stage from the UOC. It
has a direct polarization. The flyback drive circuit works with
the start-up supply taken from +6V of the Aux supply (and
subsequently taking from VlotAux+9V). When the H-drive is
high, TS7404 conducts, and transformer L5402 starts to store
energy. The base of the line transistor TS7405 is low and
therefore blocks. The current in the deflection coil returns from
diode D6404.
Second Part of Scan
When the H-drive is low, T
energy that is stored in the transformer will transfer to the
secondary, making the base of the Line Transistor high. Then
the Line Transistor starts to conduct. The current in the
deflection coil returns from the transistor in another direction.
Flyback
At the moment the H-drive becomes high, the base of the Line
ansistor becomes low. Both the Line Transistor and the
r
T
Flyback Diode will block. There is an oscillation between the
flyback capacitor C2412 and the deflection coil. Because of the
inductance of the LOT, the Line Transistor cannot stop
he correction for “horizon
ents. The phase compensation
East-West correction. The principle of the
t-West correcti
ic East-West correction. The principle
ynam
his signal is a square pulse of line
S
7404 does not conduct, and the
tal width for changed
on. The principle of the
ansistor or diode(s)
r
he
conducting immediately. After the Line Transistor is out of
conduction, the flyback pulse is created. The flyback capacitor
charges until the current in the deflection coil reduce to zero.
Then it discharges through the deflection coil and the deflection
current increases from the other direction. The flyback diode
conducts and is back to the first part of the scan.
Linearity Correction
Because the deflection coil has a certain resistance, a picture
out any linearity issues cann
with
linearity coil to compensate for this resistance. It is a coil with a
pre-magnetized core. This correction is called linearity
correction.
Horizontal S-Correction
Because the electronic beam needs to
to both sides of the screen than the center, the middle of the
screen would become narrower than both sides. To prevent
this, a parabolic voltage is applied across the deflection coil
during scan. To create this parabolic voltage, a capacitor called
S-cap (C2417/C2418) is used as a voltage source during scan.
The sawtooth current of the deflection through this capacitor
creates the required parabolic voltage. This correction is called
S-Correction.
Mannheim-Circuit
When the EHT is heavily loaded with a bright line, the flyback
time can be
scan delays a bit causing a DC-shift to the right in the next line,
which would create a small spike on the S-cap. This spike
oscillates with the inductance of the deflection coil and the
primary of LOT. The result is visible in vertical lines under
horizontal white line. This is called the Mannheim-effect.
To prevent this from happening, a circu
circuit is added. This consists of C2415, R3404, R3417 and
D6406. During the scan, C2415 is charged via R3417. During
the flyback, the S-correction parabola across the S-Cap
C2417/C2418 is in its most negative, and D6406 conducts.
Thus, C2415 is switched in parallel to C2417/C2418 during
flyback. As C2415 is much larger than C2417/C2418, the
voltage across C2415 reduces the Mannheim-effect oscillation.
Class D East-West Driver
To reduce the power loss of the
amplifier, a class-D East-West circuit is used. To achieve this,
the East-West parabola waveform EW_DRIVE from the
Hercules (frame frequency) is sampled with a saw tooth (line
frequency) taken from the line aux output. Then a series of
width-modulated pulses is formed via two inverted phase
amplifiers, filtered by an inductor, which then directly drive the
diode modulated line circuit.
East-West Correction
To achieve a good geometry, dyn
The design is such that the tube/yoke needs East-West
correction. Besides that, an inner pincushion is present after
East-West correction. The line deflection is modulated with a
parabolic voltage (frame frequency). In this way it is not so
much at top and bottom, and much more in the middle.
Upon entering the picture geometry menu in the SAM mode,
the follow
•EWW: East West Width.
•EWP: East West Parabola.
•UCP: Upper Co
•LCP: Lower Corner Parabola.
•EWT: East West Tr
The East-West drive circuit realizes
be changed by a remote control. All changed data will be
stored into the NVM after the geometry alignment.
increased a b
ing corrections will be displayed.
rner Parabola.
apezium.
ot be expected. L5401 is the
a longer distance
travel
it in this situation. As a result, the
t called Mannheim-
i
normal used linear East-West
mic S-correction is needed.
a
them all. The settings can
Page 76
EN 76L04E AA9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
Panorama
For Wide Screen sets, the S-correction of the picture has to
dapt between the different picture modes. In particular,
a
between 16:9 Wide Screen and 4:3 picture modes. This is
achieved with the (separate) Panorama circuit (see diagram
“G”). A signal (I2SDI1) from the UOC controls the state of
TS7463. When in the normal 16:9 Wide Screen mode, the
signal is “low” and therefore TS7463 is switched “off”.
When the 4:3 mode is selected, this signal from the UOC is
ulled “h
p
Panorama panel is subsequently turned “on” and, in effect,
paralleling capacitor C2475/C2474 to the S-Cap C2469/
C2470. This changes the overall effective S-correction. The
relay is switched “on” in 4:3 and Superwide picture modes.
9.3.3A
T
d
the LOT:
•+
•+11V: This supplies the frame amplifier.
•-12V: This supplies the frame amplifier.
•50V: This supplies t
•Filament: This supplies th
•VideoSupply (+200V from primary side
Notes:
•The V_T
•The EHT voltage
9.3.4B
T
components R
EHT_info characteristic. The voltage across C2412 varies
when the beam current changes. This EHT_info is used to
compensate the picture geometry via pin 97 of the Hercules
when the picture changes rapidly, and compensate the phase
2 loop via pin 113 of the Hercules. Also from the EHT_info line,
a BCL signal is derived and sent to the Hercules for controlling
the picture’s contrast and brightness.
When the picture content becomes brighter,
•Geometry distortion due to the impedance of the LOT
•Picture bl
Because of the above mentioned, we will need a circuit for
Beam
(EHT_info). These two circuits derive the signal from the
picture tube current info through LOT pin 10.
BCL
•Wh
•When it reaches 1.7 V, then the BRIGHTNESS gain limit
•Wh
Components TS7483, R3490, R3491, R3492, and C2483 are
fo
pattern).
Components R3454, D6451, D6450, C2453, R3493, and
C2230 are for avera
R3493 also control the timing where average beam current
limiting is more active or less active.
igh”, switching TS7463 “on”. The relay 1463 on the
uxiliary Voltages
he horizontal deflection provides various auxiliary voltages
erived either directly or indirectly from the secondary pins of
9V: This supplies the Hercules’s fly
he frame amplifier.
e heater pins of the picture tube.
supplies the RGB amplifier and Scavem circuit at the CRT
panel.
vo
ltage (to tuner) is drawn from V_batt.
Transformer (LOT). The Focus and Vg2 voltages are
created with two potentiometers integrated in the
transformer.
eam Current
he beam current is adjusted with R3451 and R3452. The
causing the EHT
Current Limiter (BCL) and EHT compensation
en the BCL pin voltage goes to 2.8 V, the Hercules will
t to limit CONTRAST gain.
star
t to react.
will star
en BCL pin voltage goes to 0.8 V, the RGB will be
blan
ked.
r fast beam current limiting
is generated by the Line Output
3473, R3453 and C2451 determine the
to drop.
ooming due to the picture characteristics
(e.g. with a Black-to-White
ge beam current limiting. C2453 and
back driver.
of LOT): This
it will introd
uce:
EHT_info
The “PHI2 correction” is to correct the
the Line Output Transistor, which is causing geometry
distortion due to brightness change.
Line EHT_info is to correct the geometry distortion due to EHT
deviation.
Both of them feedback through the EHTO and PH2LF pin, and
ct the
corre
Power Down
The power down connection is for EHT discharge during AC
Power
trigger the X-ray protection circuit via a 2fH soft stop sequence.
The Hercules bits OSO (Switch Off in Vertical Over scan) and
FBC (Fixed Beam Current Switch Off) will discharge the EHT
with 1mA cathode current at over-scan position.
During switch-off, the H_out fre
and the duty cycle is set to 25% fixed, during 43 ms. The RGB
outputs are driven “high” to get a controlled discharge of the
picture tube with 1 mA during 38 ms. This will decrease the
EHT to about half the nominal value (= safety requirement).
When bit OSO is set, the white spot/flash during switch-off will
be written in overscan and thus will not be visible on the screen.
Careful application must guarantee that the vertical deflection
stays operational until the end of the discharge period.
9.3.5 DAF
The Dynamic Astigmatic Focus (DAF)
34RF sets only. It provides vertical DAF and horizontal DAF.
Both of the parabola signals are derived through integration by
using chassis available signals:
•T
•T
Both of the parabolas are added on the output stage through
adder TS7402 and TS7403
drives TS7401 and is amplified by pull up resistor R3411.
D6401 and C2405 provide the rectified supply voltage.
9.3.6 X-ray Protectio
The
uses it to trigger TS7481 w
biased at “off” condition by D6480, R3482, and R3483 during
normal operation. When the EHT goes too high, the voltage
across R3482 will tend to increase as well, while the voltage
across D6481 is fixed. Up to certain level (triggering point),
TS7481 will be “on” and will force the EHT_info > 3.9 V. The
chassis will be shut down through a soft stop sequence.
9.3.7 Vertical D
The
has the advantage f
was used.
The Frame differential drive signal from the Hercules comes
from
them into a voltage, and feed them into the differential amplifier
TS7455 and TS7456. The output of TS7456 is input to the next
amplification stage of TS7452. Finally, TS7451 and TS7453
deliver the Vertical yoke current to the coil and feedback
through the sensing resistors R3471 and R3472.
D6458 and TS7454 are used to bias TS7451 and TS7453, to
get rid
the screen center.
The negative supply is from -12V and the
supply is from +12V through D6459. The flyback supply is
derived from D6455, D6456 and C2456. This circuit is a voltage
doubler, which stores energy in C2456 during the Line flyback
geometry through the East-West circuit.
“Off” state. In the Hercules, if EHT_info > 3.9 V, it will
he vertical parabola is using RC integration (via R3403
and C
2401) on the Frame sensing resistor saw tooth
(Frame_FB).
he horizontal parabola is obtained by 2 RC integration
(R3409, R3
X-ray protection circuit rectifies the filament voltage and
Frame stage consists fully of discrete components. This
a current source. Resistors R3460 and R3461 convert
o
410, C2402, C2403) on the +9V LOT output.
. The collector of TS7402 emitter-
n
hen the EHT is too high. TS7481 is
eflection
or better flash behavior than when an IC
f zero crossovers, which can cause horizontal lines at
storage time deviation
quency is doubled imme
ci
rcuit is required by
positive scannin
of
diately
g
Page 77
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 77L04E AA9.
period and delivers the energy to C2465 during the Line
scanning period. Throughout the Frame period, the charging
and discharging of C2456 works alternatively. However, at the
first half of the Frame scanning, TS7451 is “on” and consumes
all the charge from C2456. When entering 2nd half Frame
period, TS7451 is “off”, so C2456 will gradually charge up to the
required flyback supply.
C2463, R3464 and D6457 are for boosting the base voltage of
S
7451 during the flyback period and the 1st half Frame period
T
as well. C2463 is charged by D6457 during the 2nd half
scanning. R3467 and R3468 are for oscillation damping.
the
The V_guard protection is to protect
Frame stage if a fault
condition happens. The V_guard will sense the pulse with
voltage > 3.8 V and period < 900 us. Any signal out of this
range will be considered as fault, and the chassis will be shut
down.
9.3.8T
ilt and Rotation
he rotation control signal is a PWM output from th
T
filtered by R3252, R3246, R3259 and C2259. The DC voltage
after filtering at C2259 will be amplified by R3245 (Main Board)
and R3390 (CRT panel).
The output stage functions similarly as in L01.1/M8 with
IC TD
rotation
A8941P. TS7331/TS7382 and TS7332/TS7381
will function alternatively corresponding to the rotation setting.
9.3.9CRT panel
T
he RGB amplifier stage is exactly the same as in L01.1/M8.
ver, the RGB amplifier IC has been changed to
Howe
TDA6107AJF or TDA6108AJF. The “A” indication is with gain
of “80” rather than “50” in L01.1/M8. The diode D6332 used in
the former chassis, to solve the bright screen during start up, is
not required because this IC has the error correction
implemented.
Scavem
ed to enhance the
In certain versions, the Scavem feature is u
s
sharpness of the picture. The RGB signals are first
differentiated and subsequently amplified before feeding to an
auxiliary coil known as the SVM coil. The current, flowing
through the SVM coil during the picture intensity transients,
modulates the deflection field and thus the scan velocity.
During the first half of the intensity in
crease,
is increased (thus decreasing the current density by spreading
it on a wider area). During the second half of the intensity
increase, the scan velocity is decreased (increasing the current
density by concentrating it on a smaller area). The increasing
current density transition is sharpened. A decreasing current
density transition is processed in a similar way and is also
sharpened.
In this chassis the SCAVEM signal is different from its
predecessor b
ecause the H
ercules generates the differential
SCAVEM signal inside the IC.
The supply of the SCAVEM is taken from V_bat through a 1k5
ared w
/ 5 W resistor. Comp
ith the L01.1/M8, this has the
advantage of getting better performance for the pattern with
tremendous SCAVEM current (like V_sweep). In this former
chassis, because the supply was taken from the 200 V through
a 8k2 / 5 W resistor, the supply dropped significantly during a
large SCAVEM current. In this chassis, the drop due to the
pattern will be less because of the lower supply voltage
impedance.
In the Main Board, 1st stage amplification is taken care by 7208
7) lo
with the pull up resistors (3361, 338
cated in the CRT panel.
TS7361 and TS7362 is the current buffer delivering the current
output stage. T
to the
he diode D6361 is to lightly bias these
transistors, to get rid of the zero crossover of the stage.
e UOC. It is
the scan velocity
After that, the signal is ac-coupled to TS7363 and TS7364
where the emitter resistors (R3364
and R3370) will determine
the final SCAVEM current. TS7363 and TS7364 are biased by
R3363, R3366, R3367 and R3368.
C2387, R3388, R3389, R3365, R3369, C2384, and C2385 are
used
for suppre
ssing unwanted oscillations.
The function of TS7376 is to limit the SCAVEM current from
going too
high. It basically senses the voltage after R3373 and
clamps the SCAVEM signal through D6367 and C2376.
9.4Control
The Micro Controller is integrated with the Video Processor,
and is called the Hercules. For dynamic data storage, such as
SMART PICTURE and SMART SOUND settings, an external
NVM IC is being used.
Another feature includes an optional Teletext/Closed Caption
der with the possibility of diff
deco
on the Hercules type number.
The Micro Controller ranges in ROM
decoder to 128 kB with a 10 page Teletext or with Closed
Caption.
9.4.1Block Diagram
The block diagram of the Micro Controller ap
below.
#!$$%
KEYBOARD/
PROTECTION
CIRCUIT
VOLUME/MUTE/TREBBLE /BASS/PANORAMA
STBY_CON
POWER GOOD
KEYBOARD/PROTECTION
INPUT
OUTPUT
LIGHT SENSOR
LED
IR
Figure 9-4 Micro Controller block diagram
9.4.2Basic Sp
The
ecification
Micro Controller operates at
•+3.3 V_dc at pins 33, 125, and 19
•+1.8 V_dc at pins 126, 36, and 33
•I2C pull up supply: +3.3V_dc.
9.4.3Pin Co
guration and Functionality
nfi
The ports of the Micro Controller can be configured as follows:
•A normal input port.
•An input ADC port.
•An output Open Dr
ain port.
•An output Push-Pull port.
•An output PWM port.
•Input/Output Port
The following table shows the ports used for the L04 control:
erent page storage depending
from 128
WRITE
PROTECT
" !
the following supply voltages:
.
.
kB with no TXT-
plication is shown
E_14480_070.eps
120504
Page 78
EN 78L04E AA9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
The description of each functional pin is explained below
P0.2
:
•LED. This signal is used as an indication for the Standby,
Remote and
– During p
Error Indicator. Region diversity:
r
otection mode, the LED blinks and the set is
in standby mode.
– During error co
– After receiving a va
nditions it blinks at a predefined rate.
lid RC-5 or local keyboard
command it flashes once.
– For sets with error message indication,
the LED blinks
when message is active and the set is in standby
mode.
Table 9-5 LED signal diversity
LEDEuropeAP/ LATAMNAFTA
0 LED bright er StandbyLED lighted Standby LED lighted Normal
1 LED dimmerNormalLED "off" Normal LED "off" Standby
is the clock wire of the two-wire single master bi-
•SCL. Thi
s
directional I2C bus.
•SDA. Th
is is the da
ta wire of the two-wire single master bi-
directional I2C bus.
•STDBY_CON
. The Hercules generates this signal. This
can enable the MAIN SMPS in normal operation and
disable it during Standby. It is of logic “low” (0 V) under
normal operation and “high” (3.3 V) during Standby.
•IR. Th
is input pin is connected to an RC5 remote control
rec
eiver.
•SEL-IF-LL’/ M-TRAP. For AP: All L04 AP sets are Multi
System QSS set.
This is an output pin to switch the Video
SAW filter between M system and other systems.
– 0: NT
SC M (default)
– 1: PAL B/G, DK, I, L
•Write Protect.
The global pro
tection line is used to enable
and disable write protection to the NVM. When write to the
NVM is required, pin 7 of the NVM must be pulled to logic
‘0’ first (via Write_Protect of the micro-controller pin) before
a write is performed. Otherwise pin 7 of NVM must always
be at logic “1”
– 0: Disabled
efault
– 1: Enabled (d
•Mute. This p
in is use to MUTE the audio amplifier. It is
)
configured as push pull.
•Rotation. T
his pin is configured as PWM for the Rotation
feature. The output of the PWM is proportional to the
feature control.
ight Sensor. This pin is conf
•L
igured as ADC input for the
Light Sensor.
Inte
•Sel_SC2_
rface. This pin is use to switch between the
SC2_CVBS_OUT and the INTF_CVBS_OUT for the
SCART_2_CVBS_OUT/ MONITOR_OUT signal.
Hercules CVBS Output (default)
– 0:
– 1: Interface CVBS Output
•PWRDOWN. The AUX SMPS generates this sig
“high” (3.3 V) under normal operation of the TV and goes
“low” (0 V) when the Mains input voltage supply goes below
70 V_ac.
•Key
board. Followin
g are the Keyboard functions and the
step values (8 bit) for it.
Table 9-6 Local keyboard values
FunctionVoltage (V_dc) Step values (8 bit)
NAFTA Standby00 - 6
Ch +0.437 - 3 3
Exit Factory (Ch- and Vol-)0.6934 - 53
Ch -0.9354 - 73
Menu (Vol - and Vol +)1.1974 - 96
Vol -1.4997 - 121
DVD Eject1.8122 - 147
Vol +2.12148 - 169
•SDM. This
pin is conf
igured as Open Drain during the cold
start only. If this pin is shorted to ground during cold start,
it will enter the SDM mode (for Service use).
•ISP. T
his pin is configured as Open Drain d
start only. If this pin is shorted to ground during cold start,
it will enter the ISP mode (for Service use).
•PANEL
. This pin is con
figured as Open Drain during the
cold start only. If this pin is shorted to ground during that,
then it will enter to the PANEL mode.
•Res
etEnabled.
This is an output pin to switch the control
transistor (pos. TS7202) “high” or “low” for the reset of 1.8
V in case there is a corruption in the Hercules.
9.5Tuner and IF
The tuner used in this chassis comes from two sources, from
Philips and from Alps. Both tuner sources have the same pin
configuration so they are 1 to 1 compatible except for the
software, which will be selected by means of Option Settings.
The table below shows the switching behavior of SAW filter.
Table 9-9 Switching behavior SAW filter
Condition
HighLow
SystemMBG/DK/I/L
Note: The logic level is measured at th
7001
.
e base of transistor
9.5.3Option Settings
T
he option settings for the Tuner type can be found in Option
setting 1 of the
SAM mode. The Option settings for Option 1 are
as follows:
•Option Byte 1
it 7: OP_PHILIPS_TUNER
– B
– Bit 6: OP_FM_RADIO
– Bit 5: OP_LNA
– Bit 4: OP_ATS
– Bit 3: OP_ACI
– Bit 2: OP_UK_PNP
– Bit 1: OP_VIRGIN_MODE
– Bit 0: OP_CHINA
or more details on the option settings, please refer to the
F
chapter 8 “Alignments”.
9.6Source Select
For this chassis, the audio/video source selection is controlled
via the Hercules.
The Audio/Video Source Select is one of the more complex
i
ons due to its diversity and complex switching. The Audio/
funct
Video Source Select comprises of the following components:
•The
•The
9.6.1Op
The opt
Option settings of the SAM mode. T
Hercules itself for Mono Audio and Video Source
Sele
ction.
HEF switch for Stereo Audio as well as Video
Sele
ction.
tions
ion settings for the Source Selection can be found in
he Option settings for
Option 5 are as follows:
•Option Byte 5
– Bit 7: AV1
– Bit 6: AV2
– Bit 5: AV3
– Bit 4: CVI
– Bit 3: SVHS2
– Bit 2: SVHS3
– Bit 1: HOTEL MODE
– Bit 0:
For more detail on the option settings, please refer to the
ter 8 “Alignments”.
chap
9.6.2Diversity
The basic diversity of the
between the Mono and th
Audio/Video Source Select is
e Stereo sets and the number of
Cinch/SCART’s as specified in the product specification. The
table below shows the Audio/Video Source Select diversity for
all regions:
Table 9-10 AV Source Select diversity
Pin SymbolRemark
51 R/Pr IN3AV1 (CVI)
50 G/Y IN3
49 B/Pb IN3
52 INSSW3
74 CVBS2/Y2
95 AUDIO IN5 L
94 AUDIO IN5 R
73 AUDIO IN3 LAV2 (SVHS)
72 AUDIO IN3 R
71 CVBS3/Y3
70 C2/C3
80 AUDIO IN4 LSide (SHVS)
79 AUDIO IN4 R
78 CVBS4/Y4
77 C4
81 IFVO/SVO/CVBSIMonitor Out
67 AUD OUT HP L
66 AUD OUT HP R
69 AUD OUT LS L (AUD OUT/AM OUT)HP/ LS Out
68 AUD OUT LS R
59 V IN (R/Pr IN2/CX)Interface
58 U IN (B/Pb IN2)
57 Y IN (G/Y IN2/CVBS-Yx)
54 U OUT (INSSW2)
76 AUDIO IN2 L
75 AUDIO IN2 R
86 DVBO/IFVO/FMRON.C.
65 CVBSO/PIPPIP application
56 Y SYNC100 nF
55 Y OUT100 nF
53 V OUT (SWO)N.C.
93 AUD OUT S LN.C.
92 AUD OUT S RN.C.
Page 80
EN 80L04E AA9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
Table 9-11 SCART Source Select diversity
Pin SymbolRemark
51 R/Pr IN3SCART 1
50 G/Y IN3
49 B/Pb IN3
52 INSSW3
74 CVBS2/Y2
86 DVBO/IFVO/FMRO
95 AUDIO IN5 L
94 AUDIO IN5 R
93 AUD OUT S L
92 AUD OUT S R
71 CVBS3/Y3SCART 2
70 C2/C3
81 IFVO/SVO/CVBSI
73 AUDIO IN3 L
72 AUDIO IN3 R
67 AUD OUT HP L
66 AUD OUT HP R
80 AUDIO IN4 LSide I/O
79 AUDIO IN4 R
78 CVBS4/Y4
77 C4
69 AUD OUT LS L (AUD OUT/AM OUT)LS/ HP/ MON OUT
68 AUD OUT LS R
59 V IN (R/Pr IN2/CX)Interface
58 U IN (B/Pb IN2)
57 Y IN (G/Y IN2/CVBS-Yx)
54 U OUT(INSSW2)
76 AUDIO IN2 L
75 AUDIO IN2 R
65 CVBSO/PIPfor PIP
56 YSYNC100 nF
55 YOUT100 nF
53 VOUT(SWO)N.C.
9.6.3Audio Source Selection
T
he signals coming out of the DEMDEC (internal demodulator/
decode
r block of the Hercules) are selectable and consist of
the following (depending on the transmission):
•DEC L/R (Can be
•Mono (Refers to fallb
NICAM, FM 2
ack/forced Mono in Stereo
Transmission).
•SAP.
or L04, the assigned I/O with respec
F
follows:
r
•SCART1 o
•SCART2 or
AV1 Input assigned to Audio In 5.
AV2 Input assigned to Audio In 3.
•Side AV Input assigned to Au
•External Interface Input
assigned to Audio In 2.
•SCART1 Output assigned to SCAR
•SCART2 Output (EU) o
r Monitor Output (LA/NA/AP)
assigned to Headphone Output.
•Constant Level Output assigned to L
9.6.4Video Source Selection
CS, or BTSC Stereo).
t to the Hercules is as
dio In 4.
T Output.
oudspeaker Output.
9.7Video Processing
The Video Processor is basically the Hercules and the
TDA9178 (CTI/LTI). Video processing is done in these two
chips such as the Brightness Control, Contrast Control and so
on.
•Internal OSD insertion (not Saturation or Contrast
•Double window implementation.
•Linear / non linear scaling for 16:9
•Tint (hue) on UV signals (including DVD).
•Peaking, Coring, Black \ Blue \ White-stretch.
•Transfer-Ratio and Scavem
9.7.1 Feat
The features included in the Hercules are as follows:
•Brightness Control.
•Contrast Control.
•Saturation Control.
•Sharpness Control.
•Peak White Limiter.
•Beam Curren
•Black Stretch (Contrast Plus).
For sets w
•Luminance Transient Improvement (LTI).
•Color Transient Improveme
9.7.2 Block Diag
Following diagram is the block diagram of
part:
TUNER
VIDEO
SAW
AUDIO
SAW
lled).
contro
sets.
(also on TXT).
ures
t Limiter.
ith the TDA9178, there are two extra features:
nt (CTI).
ram
the video processing
NVM
68,69
2021
MONITOR
OUT
6586,81,
AUDIO
AMP
2425
29,30
95,94,80,79,
78,77,76,75,
74,73,72,71,70
67,66
CVBS/AUDIO
REAR/SIDE
INPUT/OUTPUT
HERCULES
42,4344
49,50,51
53,54,55
57,5859
SW
CRT
RGB/CVI
INPUT
LTI/CTI
PIP/
DVD
E_14480_071.eps
200204
Video source selection is done inside the
ercules. Therefore
H
it provides a video switch with 3 external CVBS inputs and a
CVBS output. All CVBS inputs can be used as Y-input for Y/C
signals. However, only 2 Y/C sources can be selected because
the circuit has 2 chroma inputs.
All input signals are converted to YUV, and looped through an
x
ternal interface. This to enable picture improvement features
e
(like LTI/CTI) or PIP.
Figure 9-5 Video processing block diagram
9.7.3 LTI/CTI
The
TDA9178 is an I2C-bus controlled IC (INCREDIBLE chip)
with YUV interface. This IC can do mainly histogram
processing, color transient improvement
transient improvement (LTI).
•Luminance Vector Processing
involve
which provides scene dependent contrast improvement,
adaptive black and white point stretching.
e
•Color V
ctor Processing involves skin tone correction,
green enhancement and blue stretch.
(CTI) and line
s histogram function,
Page 81
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
EN 81L04E AA9.
•Spectral Processor involves step improvement processing,
contour processing, smart sharpness control, color
dependant sharpness and Color Transient Improvement.
oise detector, feature mode detector and cue flash
•N
fu
nctions.
emonstration mode shows all the
•D
improvement features
in one picture.
Table 9-12 Pinning overview TDA9178
Pin SymbolDescription
1SCSandcastle input pin
2n.c.Not connected pin
3ADEXT1 External AD-conversion #1 input pin
4ADEXT2 External AD-conversion #2 input pin
5ADEXT3 External AD-conversion #3 input pin
6Y inLuminance input pin
7ADRAddress selection input pin
8U in-(B-Y) signal input pin
9V in-(R-Y) signal input pin
10 TPTestpin, connected to ground
11 SCLI2C-bus: clock input pin
12 n.c.Not connected pin
13 n.c.Not connected pin
14 SDAI2C-bus: data input pin
15 DECDIG Decoupling digital supply
16 V out-(R-Y) signal output pin
17 U out-(B-Y) signal output pin
18 V eeGround pin
19 Y outLuminance output pin
20 V ccSupply-voltage pin
21 S outLuminance output fo r SCAVEM
22 CFCue-flash output pin
23 n.c.Not connected pin
24 n.c.Not connected pin
9.7.4Op
tions
he option settings allow for process of the video as per set
T
specification. T
he option settings can be found in “Option 2”
and “Option 6” in the SAM mode. The option settings are as
follows:
•Option Byte 2
t 7:
– Bi
– Bit 6 :OP_GREEN_UI
– Bit 5: OP_CHANNEL_NAMING,
– Bit 4: OP_LTI,
– Bit 3: OP_TILT,
– Bit 2: OP_FINE_TUNING
– Bit 1: OP_PIP_PHILIPS_TUNER,
– Bit 0: OP_HUE,
•Option Byte 6
– Bit 7: OP_PERSONAL_ZAPPING,
– Bit 6:
– Bit 5: OP_FMTRAP
– Bit 4: OP_COMBFILTER
– Bit 3: OP_ACTIVE_CONTROL
– Bit 2: OP_VIDEO_TEXT
– Bit 1 :OP_LIGHT_SENSOR,
– Bit 0: OP_DUAL_TEXT
or more details on the option settings, please refer to the
F
chapter 8 “Alignments”.
9.8Audio Processing
The audio decoding is done entirely via the Hercules. The IF
output from the Tuner is fed directly to either the Video-IF or the
Sound-IF input depending on the type of concept chosen.
There are mainly two types of decoder in the Hercules, an
analog decoder that decodes only Mono, regardless of any
standards, and a digital decoder (or DEMDEC) that can decode
both Mono as well as Stereo, again regardless of any
standards.
In this chassis, the analog decoder is used in
•It is used for AM Sound demodulation in the Euro
SECAM LL’ transmission.
•It is used for all FM
demodulation in AP AV-Stereo sets.
9.8.1Diversity
The diversity for the Audio decoding can be broken up into two
main concepts:
•The Quasi Split So
und concept used in Europe and some
AP sets.
•The Inter Carrier concept, used in NAFTA and LATAM.
The UOC-III family makes n
o difference anymore be
QSS- and Intercarrier IF, nearly all types are softwareswitchable between the two SAW-filter constructions.
Simple data settings are required for the set to determine
whether it is us
ing the Inter Carrier or the QSS concept. These
settings are done via the “QSS” and “FMI” bit found in SAM
mode. Due to the diversity involved, the data for the 2 bits are
being placed in the NVM location and it is required to write once
during startup.
On top of that, it can be further broken down into various
systems de
pending on the regio
n. The systems or region
chosen, will in turn affect the type of sound standard that is/are
allowed to be decoded.
or the case of Europe, the standa
•F
rd consists of BG/DK/I/
LL’ for a Multi-System set. There are also versions of
Eastern Europe and Western Europe set and the standard
for decoding will be BG/DK and I/DK respectively. FM
Radio is a feature diversity for the Europe sets. The same
version can have either FM Radio or not, independent of
the system (e.g. sets with BG/DK/I/LL’ can have or not
have FM radio).
NAFTA and LATAM, there is only one
•For the case
of
transmission standard, which is the M standard. The
diversity then will be based on whether it has a dBx noise
reduction or a Non-dBx (no dBx noise reduction).
or the case of AP, the stan
•F
dard consists of BG/DK/I/M for
a Multi-System set. The diversity here will then depends on
the region. AP China can have a Multi-System and I/DK
version. For India, it might only be BG standard.
nality
9.8.2Fun
ctio
The features available in the Hercules are as follow
•Treble and Bass Control.
•Surround Sound Effect that includes:
– Incredible Stereo.
– Incredible Mono.
– 3D Sou
nd (not fo
r AV Stereo).
– TruSurround (not for AV Stereo).
– Virtual Dolby Surround, VDS422 (no
– Virtual Dolby Surround, VDS423 (no
– Dolby Pro-Logic (n
ot for AV Stereo).
•Bass Feature that includes:
– Dynamic Ul
tra-Bass.
– Dynamic Bass Enhancement.
– BBE (not for AV Stereo).
•Auto-Volume Leveler.
•5 Band Equalizer.
•Loudness Control.
All the fea
tures stated are available for the F
ull Stere
and limited features for the AV Stereo
9.8.3Aud
o Amplifier
i
The audio amplifier part is very straightforward. It uses the
integr
ated power amplifier TDA2616Q, and delivers a
maximum output of 2 x 10 W_rms.
The maximum operating condition for this amplifier is 21 V
ded. Normal op
unloa
erating supply is from 7.5 V to 16 V.
two cases:
pe
tween
s:
t for AV Stereo).
t for AV Stereo).
o versions
Page 82
EN 82L04E AA9.
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
Muting is done via the VOLUME_MUTE line connected to pin
2 of the amplifier-IC and coming from the UOC.
The following table shows pin functionality of the Audio
e
r:
Amplifi
Table 9-13 Pinning overview TDA2616
Pin Pin NameNormal Operation
1 Input LeftInput AC signal
2 Mute16 V_dc
3 Ground0 V
4 Output L Channel AC waveform
5 Supply Voltage (negative)-16 V_dc
6 Output R ChannelAC waveform
7 Supply Volta ge (positive)+ 16 V_dc
8 Inverting inputs L and R0 V
9 Input RightInput AC signal
9.9Picture in Picture (PIP)
The PIP application has two tuners, one with a splitter on the
main chassis and another with "phono" input on the PIP panel.
The same signal is injected to both tuners, so that it does not
need separate auto tuning for the PIP tuner.
The TDA9887TS (item 7201) is an alignment free multistanda
positive and negative modulation, including sound AM and FM
processing.
The SDA9489 (item 7242) is a multi system color decoder with
ny f
ma
YPbPr, 16:9 application, WSS detection, Closed Caption, and
OSD display for PIP window etc.
The PIP power supply is based o
principle. The +9V input voltage is converted to +5V and +3.3V
via the regulator (item 7501).
n and sound IF signal PLL demodulator for
rd visio
eatures such as: half screen size PIP, selectable YUV or
algorithm that installs TV sets dir
from cable network by means of a
predefined TXT page
ADCAnalogue to Digital Converter
AFCAutomatic Frequency Control: control
s
signal u
frequency
AFTAutomatic Fine Tuning
AGCAutomatic Gain Control: algorithm that
controls the vid
box
AMAmplitude Modulation
APAsia Pacific region
ARAspect Ratio: 4 by 3 or 16 by 9
ATSAutomatic Tuning System
AVExternal Audio Video
AVLAutomatic Volume Leveler
BCLBeam Current Limitation
B/GMonochrome TV system. Sound
carrier distance is 5
BTSCBroadcast Television Standard
Committee
system, originating from the USA and
used e.g. in LATAM and AP-NTSC
countries
CCClosed Caption
CCCContinuous Cathode Calibration
ComPairComputer aided rePair
CRTCathode Ray Tube or picture tube
CSMCustomer Service Mode
CTIColor Transient Improvement:
man
transients
CVBSComposite Video Blanking and
Synchroniza
CVIC
DACDigital to Analogue Converter
DBXDynamic Bass Expander or noise
reduction syste
D/KMonochrome TV system. Sound
carrier distance is 6.
DFUDirection For Use: description for the
end user
DNRD
DSPDigital Signal Processing
DSTDealer Service Tool: special remote
control designed for dealers to enter
e.g
DVDDigital Versatile Disc
EEPROMElectrically Erasable and
Programmable Rea
EHTExtra High Tension
EHT-INFOExtra High Tension information
EPGElectronic Programming Guide
EUEurope
EWEast West, related to horizontal
def
EXTExternal (source), entering the set via
SCART or
FBLFast Blanking: DC signal
accompanying RGB signals
FILAMENTF
FMField Memory or Frequency
Mod
HHorizontal sync signal
HPHeadphone
IMonochrome TV system. Sound
carrier distance is 6
I2CIntegrated IC bus
IFIntermediate Frequency
ed to tune to the correct
eo inp
.
. Multiplex FM stereo sound
pulates steepness of chroma
i
tion
omponent Video Input
m in BT
ynamic Noise Reduction
.
service mode
d On
n of the set
lectio
Cinch
ilament of CRT
u
lation
.
ectly
ut of the feature
5 MHz
SC
5 MHz
ly Memory
0 MHz
Page 83
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
IICIntegrated IC bus
ITVInstitutional TV
LATAMLatin American countries like Brazil,
LEDLight Emitting Diode
L/L'Monochrome TV system. Sound
LSLarge Screen or Loudspeaker
M/NMonochrome TV system. Sound
OBOption Bit
OCOpen Circuit
OPOption Byte
OSDOn Screen Display
PALPhase Alternating Line. Color system
PCBPrinted Circuit board
PLLPhase Locked Loop. Used for e.g.
PORPower-On Reset
PTPPicture Tube Panel (or CRT-panel)
RAMRandom Access Memory
RCRemote Control handset
RGBRed, Green, and Blue video signals
ROMRead Only Memory
SDAMService Default / Alignment Mode
SAPSecond Audio Program
SCSandcastle: pulse derived from sync
S/CShort Circuit
SCLSerial Clock
SDASerial Data
SECAMSEequence Couleur Avec Memoire.
SIFSound Intermediate Frequency
SSSmall Screen
STBYStandby
SVHSSuper Video Home System
SWSoftware
THDTotal Harmonic Distortion
TXTTeletext
uPMicroprocessor
UOCUltimate One Chip
VVertical sync signal
V_BATMain supply voltage for the deflection
V-chipV
VCRVideo Cassette Recorder
WYSIWYRWhat You See Is What You Record:
XTALQuartz crystal
YCLuminance (Y) and Chrominance (C)
r
gentina, etc.
A
carrier distance is 6.5 MH
I, L is all ba
carr
ud
A
sound system, mainly used in Europe.
Committ
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)
TV related da
mainly used
carrier = 4.433619 MHz) and South
America (color carrier PAL M =
3.575612 MHz and PAL N = 3.582056
MHz)
FST tun
can give directly the desired frequency
signals
Colo
and East
4.406250 MHz and 4.250000 MHz
stage
iolence Chip
record selection that f
picture and sound
signal
nds except for Band I
ier distance is 4.5 MHz
io Multiplexing. This is a digital
ee. C
olor system mainly used
ta e.g. alignme
in West Europe
i
ng systems. The customer
r system mainly used in France
Europe. Color carriers =
(mostly 141 V)
z. L' is Band
nts
(color
ollows main
EN 83L04E AA9.
Page 84
EN 84L04E AA9.
9.11 IC Data Sheets
This section shows the internal block diagrams and pin layouts
of ICs that are drawn as "black boxes" in the electrical diagrams
(with the exception of "memory" and "logic" ICs).
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.11.1 D
iagram F, TDA9887 (IC7201)
BLOCK DIA
VIF2
2
1
VIF1
SIF2
24
23
SIF1
GRAM
C
VAGC(pos)
TAGC
14
C
AGC(neg)
TUNER AGC
SUPPLYSIF AGC
VIF-AGC
VIF-PLL
filter
VAGCTOP
C
SINGLE REFERENCE QSS MIXER
C
VPLL
199161521
BL
RC VCO
VIF-PLL
INTERCARRIER MIXER
AND AM DEMODULATOR
AGC
OUTPUT
PORTS
I2C-BUS TRANSCEIVER
external reference signal
or 4 MHz crystal
DIGITAL VCO CONTROL AFC DETECTOR
TDA9887TS
MAD
REFAFC
SOUND TRAPS
4.5 to 6.5 MHz
AUDIO PROCESSING
NARROW-BAND
FM-PLL DEMODULATOR
AND SWITCHES
17
CVBS
video output: 2 V (p-p)
[1.1 V (p-p) without trap]
AUD
8
5
6
DEEM
AFD
audio output
de-emphasis
network
C
AF
AGND
V
P
PIN CONFIGURATION
113
22
OP1 OP2FMPLLFMIN
sound intercarrier output
VIF1
1
VIF2
2
3
OP1
FMPLL
4
DEEM
5
AFD
6
DGND
AUD
TOP
SDA
SCL
SIOMAD
TDA9887TS
7
8
9
10
11
12
MHC144
121820
7
SIOMADSDASCL
DGND
and MAD select
SIF2
24
SIF1
23
OP2
22
AFC
21
V
20
P
19
VPLL
AGND
18
17
CVBS
VAGC
16
REF
15
TAGC
14
FMIN
13
41310
MHC143
FM-PLL
filter
E_14480_129.eps
120504
Fig
ure 9-6 Internal Block Diagram and Pin Configuration
Page 85
Circuit Descriptions, List of Abbreviations, and IC Data Sheets
9.11.2 Diagram H, TDA9178 (IC7610)
BLOCK DIAGRAM
EN 85L04E AA9.
Sout
Yin
Uin
Vin
DEC
DIG
Vcc
ground
Sandcastle
inputstage
supply
window
generation
calibrate
Y
U,V
Luminance vector processing
luminance
processing
saturation
correction
skin tone correction
green enhancement
blue stretch