o Safety Instructions 2
o Technical Specifications 3
o Remote Control 4
o Preparations 7
o Operating Your TV 8
o Block Diagram 21
o IC Datasheets&Specs 22
o Pin Voltages of IC’s 29
o Oscillosgraphs Of Some IC Pins 31
o Electrical Adjustments 35
o Channel Frequency Tables 38
o Spare Part List 41
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1. SAFETY INSTRUCTIONS .
GENERAL GUIDELINES
1. It is advised to insert an isolation transformer
in the AC supply before servicing a hot
chassis.
2. Potentials as high as 33KV are present when
this receiver is in operation. Operation of the
receiver without the rear cover involves the
danger of a shock hazard from the receiver
power supply. Servicing should not be
attempted by any one who is not competent
with the precautions necessary when working
on the high voltage equipment. Always
discharge the anode of the tube.
3. When servicing observe the original lead
dress in the high voltage circuits. If a short
circuit is found, replace all the parts which
have been overheated or damaged by the
short circuit.
4. Always use the manufacturer’s replacement
safety components. The critical safety
components marked with
on the
schematics diagrams should not be replaced
by other substitutes. Other substitute may
create the electrical shock, fire or other
exposed metallic part a return path to the
chassis the reading should be between
4Mohm and the 20Mohm. When the exposed
metal does not have a return path to the
chassis, the reading must be infinite.
LEAKAGE CURRENT HOT CHECK
1. Plug the AC cord directly in to the AC outlet.
Do not use an isolation transformer for this
check.
2. Connect a 2Kohm 10W resistor in series with
an exposed metallic part on the receiver and
an earth, such as a water pipe.
3. Use an AC voltmeter with high impedance to
measure the potential across the resistor.
4. Check each exposed metallic part and
check the voltage at the each point.
5. Reverse the AC plug at the outlet and repeat
each of the above measurements.
6. The potential at the any point should not
exceed 1.4 Vrms. In case a measurement is
outside the limits specified, there is the
possibility of a shock hazard, and the receiver
should be repaired and rechecked before it
is returned to the customer.
hazards. Take attention to replace the
spacers with the originals. Furthermore where
a short circuit has occurred, replace those
components that indicate evidence of
overheating.
5. After servicing, see that all the protective
HOT CHECK CIRCUIT
TO INSTRUMENTS
EXPOSED
METALLIC PARTS
AC-Voltmeter
Water pipe
(earth)
devices such as insulation barriers, insulation
papers, shields and isolation R-C
2 K Ohm
combinations are correctly installed.
6. When the receiver is not being used for a
long time of period of time, unplug the
power cord from the AC outlet.
7. After servicing make the following leakage
current checks to prevent the customer from
being exposed to shock hazard.
LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper
between the two prongs of the plug.
2. Turn the receiver’s power switch on.
3. Measure the resistance value with an
ohmmeter, between the jumpered AC plug
and each exposed metallic cabinet part on
the receiver, such as screw heads, aerials,
Figure 1
X-RAY RADIATION WARNING
The primary source of X-ray radiation in this receiver
is the picture tube. The chassis is specially
constructed to limit X-ray radiation. For continued Xray radiation protection, replace the tube with the
same type of the original one.
CAUTION
AFTER REMOVAL OF THE ANODE CAP, DISCHARGE THE
ANODE OF THE PICTURE TUBE AND THE ANODE CAP TO
THE METAL CHASSIS, CRT SHIELD, OR THE CARBON
PAINTED ON THE CRT WITH A HIGH VOLTAGE PROBE
AND MULTIMETER (SELECT VDC) AND THEN SHORT
CIRCUIT DIRECTLY TO DISCHARGE COMPLETELY
connectors, control shafts etc. When the
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2. TECHNICAL SPECIFICATIONS .
Power source: 220-240V AC, 50-60Hz
Power consumption (nom.) : 73W 20”, 21”
Standby power consumption : 2 W
Aerial impedance : 75Ohm, coaxial type
1
Receiving system
: PAL BG
PAL SECAM BG
PAL SECAM BG DK
PAL I
Receiving channels: VHF BAND I CH2-4 VHF BAND III CH5-12
CABLE TV S1-41
UHF BAND CH21-69
Audio outputs : 7W RMS at %10 THD 21”
High Voltage : 25 ± 0.5 KV 21”
Focus voltage : %25.6 ± %38 of EHT
Grid 2 voltage : 0-1400 V
Heater voltage : 6.2 ± 0.2 Vrms
Video/Audio Terminals : AV1 IN Video : 1 Vpp,75 Ohm
Media formats: DVD video, audio CD, video CD
(VCD 1.0/1.1/2.0), S-Video CD,
CD-ROM (MP3, JPEG)
1
: TV set is produced to receive “one” of these colour and sound systems.
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3. REMOTE CONTROL .
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Special features
• Your TV can receive stereo channels directly (NICAM
optional).
• Automatic tuning system with country selection.
• 100 Programme Memory.
• Available for Cable Channels (A decoder may be required).
• Manual Fine Tuning.
• Child Lock.
• Return to the last viewed channel (SWAP).
• Spatial Sound effect.
• 16:9 picture format.
• S-Video connection (optional).
• Audio/Video RCA sockets (optional).
• Sound adjustment using one button (Smart control).
• Equalizer Sound Setup.
• Automatic Volume Limiting.
• Your TV set is equipped with an On-Screen Display system.
This system enables the user to see the functions on-screen
and to control them efficiently.
• Infrared Remote Control.
• Virtual Dolby Surround (optional).
• Dynamic Bass (optional).
• Multi language menu system.
• On Timer.
• Off Timer.
• Stereo headphone socket (optional).
• 2 Scart Socket: Video cassette recorder, satellite receiver,
video disc player,DVD, TV games or a home computer can be
connected to this AV socket with an appropriate connecting
cable.
• Channel naming.
• Teletext reception.
• Automatic recognition of the broadcasting format (4:3, 16-9)
via WSS feature.
• Channel editing.
• Quick Program Display.
• Alarm function (optional).
• Zoom.
• Freeze.
• MP3 Playback.
• JPEG display.
• Dolby Digital.
• Coaxial output (optional).
• Screen saver.
• SPDIF output.
• Last memory.
• Kid Safe mode.
(*): These features are not available in all models.
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4. PREPARATIONS .
MAIN SUPPLY CONNECTIONS
Connect the TV mains plug into your domestic mains
socket outlet (230 V 50Hz AC).
Press the Program up, Program down button or
Numeric Buttons on the remote handset to switch
• the TV on.
AERIAL CONNECTION
Using a 75Ω aerial lead connect your TV to the
aerial outlet in your home.
BATTERY FITTING
Insert the 2 AAA Batteries supplied into the
compartment on the rear of the remote control,
ensure you follow the polarity diagram inside
the compartment.
4
4
PIN CONNECTIONS FOR SCART SOCKET
1-
Audio output Right 11- RGB input, Green
2- Audio input Right 12-
3- Audio output Left(Mono)13- Red ground
4- Audio ground 14- Ground
5- Blue ground 15- RGB input, Red
6- Audio input Left(Mono) 16- Blanking Signal
7- RGB input, Blue 17- Video output ground
8- Switching voltage 18- Video input ground
9- Green ground 19- Video output
10- 20- Video input
21- Screening
CONNECTING TV WITH VIDEO AND SATELLITE/DIGITALRECEIVER
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5. OPERATING YOUR TV .
A. SWAP FUNCTION
Allows you to swap between the
program you are watching and the
last selected program. i.e. If you were
watching Program 1 and
change to Program 11, press the
SWAP button to go back to
Program 1. Press it again to return to
Program 11.
C. TUNING THE TELEVISION
There are two ways of tuning your television:
• Manual, where you control the tuning process
or Autoprogram where the television does it all
automatically.
• The TV sets equipped with ATS (Automatic
Tuning System) sorts the channels regarding
the broadcasting system of your country
(optionally).
Please Note
If the TV is set to a channel with no signal the
B. AV
Press theAV button to select your
For use when you are connecting an
external source to your TV (Video
recorder, DVD player etc.) via the SCART
sockets or RCA sockets.
See ‘Connecting external equipment’.
Press the AV button to select your input as
follows:
2 Scart models:
1 AV1 when using SCART socket 1.
TV will return to standby after 5 minutes. The
time remaining is displayed on the screen.
Manual Tuning
Tuning the TV is accessed through the SETUP
menu.
There are two ways to access the SETUP
menu:
Press the blue Setup button or Press
the Menu button and use the
Program down button to select
SETUP. Press the OK button to
enter the SETUP menu.
2 AV2 when using SCART socket 2.
3 AV2-S for S-Video equipment. (Optional)
4 AV3 when using the RCA sockets
of the TV. (Optional)
5 AV3-S when using the S-video socket and
RCA audio sockets of the TV. (Optional)
1 Scart models:
1 AV1 when using SCART socket 1.
2 AV2 when using the RCA sockets of the
TV. (Optional)
3 AV2-S when using the S-video socket and
RCA audio sockets of the TV. (Optional)
Press the AVbutton again to return
toTV
Please note
The system will displayed automatically on
SYSTEM row i.e.BG, L, I, DK depending the
receiving broadcasting system of the country. In
some countries the broadcasting system can be
both in BG/DK or BG/LL´. Only the TV sets
produced with Pal Secam BG/DK or Pal Secam
BG/LL´ systems can receive both BG/DK or
BG/LL´ broadcasts. In this case the user can
select the required SYSTEM using Volume
up/down buttons.
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Please note
If you do not press any buttons for 15
seconds the TV will exit the menu
system.
In the Setupmenu select PROG NO
and change to P1 using the Program
down button to select it and the
Volume up button to change it.
Starting with Program 1, tune in the
first channel as follows:
Use the Program down button to
select SEARCH.
Press the Volume up or Volume
down button to start the tuning
search.
When the search finds a strong
channel signal it will stop searching.
The picture will appear.
Identify which channel you are
watching (BBC 1, ITV 1 etc.) and
decide which program number you
want it to be.
Use the Program down button to
select PROGRAM NO.
Use the Volume up/down buttons to
select the program number.
Use the Program down button to
select Store. Press theOK button and
STORED will appear on the STORE
line.
Tuning with channel numbers
Enter the SETUP menu by pressing
the blue button. Press the OK button
to enter the CHANNEL row.
Use the OK button to select “S” for
cable channels and “C” for terrestrial
broadcast.
Use Volume up button to select the
channel number buttons.
Enter the channel number using the
Numeric buttons.
Press the Program down/up buttons
to exit the channel row.
Use the Program down button to
select PROGRAM NO.
Use the Volume up/down buttons to
select the program number.
Use the Program down button to
select STORE. Press the OK button
and STORED will appear on the
STORE line.
You have now stored the first
channel.
Use the Program up button to select
again SEARCH and continue the
tuning procedure until you have tuned
in all the programmes you want or the
television can receive.
To exit the SETUP menu press the
TV/TX button.
Automatic tuning (Autoprogram)
Enter the SETUP menu as before.
You have now stored the first
channel.
Use the Program up button to select
again SEARCH and continue the
tuning procedure until you have tuned
in all the programmes you want or the
television can receive.
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Use the Program down button to
select AUTOPROGRAM and the OK
button. A list of Press countries will
appear. Select the desired country
using Program and Volume buttons.
When you are sure the aerial is
connected properly press the OK
button. Autoprogam will start.
To cancel Autoprogram while it
isworking press the Menu button.
Your TV is now tuned and ready to use.
Please note:
If auto sort fails to arrange the programmes in
the required sequence please refer to
programme table.
Fine tuning
Although the search and Autoprogram will
automatically try and tune to the best reception,
in areas of poor reception a bit of fine tuning
may be required.
In the SETUP menu use the Program
up/down buttons to select FINE
TUNE. Use the Volume up and
Volume down buttons to fine tune.
When you have finished use the
Program down button to select
STORE and press the OK button.
D. FEATURES
1-) TV GUIDE(Optional)
You can see the TV Guide information on the
screen by pressing "DOUB" button while a
provider channel or a supported channel by
provider is selected. The information of the
current and next programmes which is sent by
provider is displayed on the screen.
Note: TV Guide information may not have for all
programmes. It depends on the broadcasting
and determined by broadcasting company.
Note: TV Guide is not displayed on the screen,
if there is not a provider in the saved channels.
DATE: Date information is given by provider
channel. You can use the numeric buttons to
change the date.
PROVIDER:Provider is the channel which send
the TV Guide information. You can select the
provider via this function. Press Volume up/down buttons to select the provider and
then press "OK".
.
STATION MATCH:The supported channels by
provider may not be defined automatically. You
can open this menu and define the provider for
these channels. Adjusting the provider just one
time is enough for these channels.
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DISPLAY INFO: If you want to see the TV
Guide information automatically while changing
the channels, this option should be open. In this
case, if you open the provider channel Mini
Guide occurs on the screen.
2-) PAT (Picture and Text) (OPTIONAL)
In the double window function, you can also
display the teletext screen in the second
window.
3-) PIP Picture Position Change
Press the POS button repeatedly until
desired position is achieved. The PIP
picture moves clockwise.
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6.K1-K5 ŞASİ BLOK DİAGRAMI.
FBT
TR 502
SCART 1
115 V / 122
SCART 2
2
T
U
O
V
1
T
U
O
V
POWER AMP.
IC 301 AN 5277
AOUT1R
AOUT1L
MUTE
B
R
G
IC 201
SWITCH
MC14052B
T703
RGB IN
54
CVBS OUT
40
30/31/32
Video-Controller-
16
T701, T702,
CRT MODÜLÜ
7
6
71/72/73
47
50
49
FRONT AV
DVD/SCART
CVBS OUT
H-OUT
11
41
10
Family
IC 101
Text-IFAudio IC
14
58
57
17
SAPTIRMA
HORIZONTAL
60
2SD2586
H-SYNC
61
858459
VPROT
VDR Q
VDR T
IC 501
SAPTIRMA
TDA 8357
VERTICAL
EHT45 V33 V12 V
KEYBOARD & IR
LED
IR
TUNER
SCL SDAIF1 IF2
AGC
SDA
SCL
EEPROM
WR. PRO.
IC 401
24C16
SDA
SCL
220V AC in
IC 602
ICE1QS01
SMPS CONT.
SMPS
TR601
6.5 V 5 V 3.3 V 1.8 V
115/122 V24 V 12 V 8 V
Page 23
7. IC DATASHEETS&SPECS .
7.1)VCT 49XYI
GENERAL DECRIPTION
The VCT 49xyI is an IC family of high-quality singlechip TV processors. Modular design and deepsubmicron technology allow the economic integration of features in all classes of single-scan TV sets.
The VCT 49xyI family is based on functional blocks contained and approved in existing products like
DRX 396xA, MSP 34x5G, VSP 94x7B, DDP 3315C, and SDA 55xx.
Each member of the family contains the entire IF, audio, video, display, and deflection processing for
4:3 and 16:9 50/60-Hz mono and stereo TV sets. The integrated microcontroller is supported by a
powerful OSD generator with integrated Teletext & CC acquisition including on-chip page memory.
Features
The VCT 49xyI family offers a rich feature set,
overing the whole range of state-of-the-art
50/60-Hz TV applications.
– PSSDIP88-1/-2 package
– PMQFP144-2 package
– Submicron CMOS technology
– Low-power standby mode
– Single 20.25 MHz reference crystal
– 8-bit 8051 instruction set compatible CPU
– Up to 256 kB on-chip program ROM
– WST, PDC, VPS, and WSS acquisition
– Closed Caption and V-chip acquisition
– Up to 10 pages on-chip teletext memory
– Multi-standard QSS IF processing with single SAW
– FM Radio and RDS with standard TV tuner
– TV-sound demodulation:
• all A2 standards
• all NICAM standards
• BTSC/SAP with MNR (DBX optional)
• EIA-J
– Baseband sound processing for loudspeaker
channel:
• volume and balance
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• bass/treble or equalizer
• loudness and spatial effect (e.g. pseudo stereo)
• Micronas AROUND (virtual Dolby optional)
• Micronas BASS
• further optional and licence requiring sound enhancements as BBE, SRS Wow and Micronas
VOICE
– CVBS, S-VHS, YCrCb and RGB inputs
– 4H adaptive comb filter (PAL/NTSC)
– multi-standard color decoder (PAL/NTSC/SECAM)
– Nonlinear horizontal scaling “panorama vision”
– Luma and chroma transient improvement (LTI, CTI)
– Non-linear color space enhancement (NCE)
– Dynamic black level expander (BLE)
– Scan velocity modulation output
– Soft start/stop of H-drive
– Vertical angle and bow correction
– Average and peak beam current limiter
– Nonlinear and dynamic EHT compensation
– Black switch off procedure (BSO)
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PIN CONNECTIONS AND SHORT DESCRIPTIONS
NC = not connected
LV = if not used, leave vacant
OBL = obligatory; connect as described in circuit diagram
IN = Input Pin
OUT = Output Pin
SUPPLY = Supply Pin
Connection
Pin
No Pin Name Type
1 GND SUPPLY OBL Ground Platform
2 VSUP8.0AU SUPPLY OBL Supply Voltage Analog Audio, 8.0 V
3 VREFAU OBL Reference Voltage, Audio
4 SPEAKERL OUT LV Analog Loudspeaker Output, Right
5 SPEAKERR OUT LV Analog Loudspeaker Output, Right
6 AOUT1L OUT LV Analog Audio 1 Output, Left
7 AOUT1R OUT LV Analog Audio 1 Output, Right
8 AIN3L/AOUT2L IN/OUT LV Analog Audio 3 Input, Left / Analog Audio 2 Output, Left
9 AIN3R/AOUT2R IN/OUT LV Analog Audio 3 Input, Right / Analog Audio 2 Output, Right
10 AIN2L IN GND Analog Audio 2 Input, Left
11 AIN2R IN GND Analog Audio 2 Input, Right
12 AIN1L IN GND Analog Audio 1 Input, Left
13 AIN1R/SIF IN/OUT GND Analog Audio 1 Input Right/Analog 2nd Sound IF Output
14 TAGC OUT LV Tuner AGC Output
15 VREFIF OBL Reference Voltage, IF ADCs
16 IFIN- IN VREFıf Differential IF Input
17 IFIN+ IN VREFıf Differential IF Input
18 RESETQ IN/OUT OBL Reset Input/Output
19 VSUP5.0FE SUPPLY OBL Supply Voltage Analog IF Front-end, 5.0 V
20 VSUP5.0IF SUPPLY OBL Supply Voltage IF ADC, 5.0 V
21 VSUP3.3DIG SUPPLY OBL Supply Voltage Digital Core, 3.3 V
22 GND SUPPLY OBL Ground Platform
23 GND SUPPLY OBL Ground Platform
24 VSUP1.8DIG SUPPLY OBL Supply Voltage Digital Core, 1.8 V (main and stand by supply)
25 XTAL1 IN OBL Analog Crystal Input
26 XTAL2 OUT OBL Analog Crystal Output
27 P22 IN/OUT LV Port 2, Bit 2 Input/Output
28 P23 IN/OUT LV Port 2, Bit 3 Input/Output
29 VIN11 IN GND Analog Video 11 Input
30 VIN10 IN GND Analog Video 10 Input
31 VIN9 IN GND Analog Video 9 Input
32 VIN8 IN GND Analog Video 8 Input
33 VIN7 IN GND Analog Video 7 Input
34 VIN6 IN GND Analog Video 6 Input
35 VIN5 IN GND Analog Video 5 Input
36 VIN4 IN GND Analog Video 4 Input
37 VIN3 IN GND Analog Video 3 Input
38 VIN2 IN GND Analog Video 2 Input
39 VIN1 IN GND Analog Video 1 Input
40 VOUT1 OUT LV Analog Video 1 Output
41 VOUT2 OUT LV Analog Video 2 Output
42 VOUT3 OUT LV Analog Video 3 Output
(If not
used) Short Description
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Supply Voltage Analog Video Front-end, 1.8 V (main and stand by
46 VSUP3.3FE SUPPLY OBL
47 P10 IN/OUT LV Port 1, Bit 0 Input/Output
48 P11 IN/OUT LV Port 1, Bit 1 Input/Output
49 P12 IN/OUT LV Port 1, Bit 2 Input/Output
50 P13 IN/OUT LV Port 1, Bit 3 Input/Output
51 P14 IN/OUT LV Port 1, Bit 4 Input/Output
52 P15 IN/OUT LV Port 1, Bit 5 Input/Output
53 P16 IN/OUT LV Port 1, Bit 6 Input/Output
54 P17 IN/OUT LV Port 1, Bit 7 Input/Output
55 P20 IN/OUT LV Port 2, Bit 0 Input/Output
56 P21 IN/OUT LV Port 2, Bit 1 Input/Output
57 SCL IN/OUT OBL I²C Bus Clock Input/Output
58 SDA IN/OUT OBL I²C Bus Data Input/Output
59 VPROT IN GND Vertical Protection Input
60 HOUT OUT LV Horizontal Drive Output
61 HFLB IN HOUT Horizontal Flyback Input
62 SAFETY IN GND Safety Input
63 GNDDAC SUPPLY OBL Ground Video DACs
64 VSUP3.3DAC SUPPLY OBL Supply Voltage Video DACs, 3.3 V
65 VSUP3.3IO SUPPLY OBL Supply Voltage I/O Ports, 3.3 V (main and Standby supply)
66 GND SUPPLY OBL Ground Platform
67 GND SUPPLY OBL Ground Platform
68 VSUP3.3BE SUPPLY OBL Supply Voltage Analog Video Back-end, 3.3 V
69 XREF OBL Reference Current for RGB DACs
70 VRD OBL Reference Voltage for RGB DACs
71 BOUT OUT VSUP5.0BE Analog Blue Output
72 GOUT OUT VSUP5.0BE Analog Green Output
73 ROUT OUT VSUP5.0BE Analog Red Output
74 SVMOUT OUT VSUP5.0BE Scan Velocity Modulation Output
75 BIN IN GND Analog Blue Input, Back-end
76 GIN IN GND Analog Green Input, Back-end
77 RIN IN GND Analog Red Input, Back-end
78 FBIN IN GND Fast Blank Input, Back-end
79 GNDM IN GND Reference Ground for Sense ADC
80 SENSE IN GND Sense ADC Input
81 RSW1 OUT LV Range Switch 1 Output
82 RSW2 OUT LV Range Switch 2 Output
83 EW OUT GND Vertical Parabola Output
84 VERT- OUT GND Differential Vertical Sawtooth Output
85 VERT+ OUT GND Differential Vertical Sawtooth Output
86 TEST IN GND Test Input, reserved for Test
87 VSUP5.0BE SUPPLY OBL Supply Voltage Analog Video Back-end, 5.0 V
88 GND SUPPLY OBL Ground Platform
supply)
Supply Voltage Analog Video Front-end, 3.3 V (main and stand by
supply)
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7.2)TDA 8357
GENERAL DESCRIPTION
The TDA8357J is a power circuit for use in 90° and
110° colour deflection systems for 25 to 200 Hz field
frequencies, and for 4 : 3 and 16 : 9 picture tubes. The IC
contains a vertical deflection output circuit, operating as a
high efficiency class G system. The full bridge output
circuit allows DC coupling of the deflection coil in
combination with single positive supply voltages.
The IC is constructed in a Low Voltage DMOS (LVDMOS)
process that combines bipolar, CMOS and DMOS
devices. DMOS transistors are used in the output stage
because of absence of second breakdown.
FEATURES
• Few external components required
• High efficiency fully DC coupled vertical bridge outputcircuit
• Vertical flyback switch with short rise and fall times
• Built-in guard circuit
• Thermal protection circuit
• Improved EMC performance due to differential inputs
SYMBOL PARAMETERSCONDITIONSMIN.TYP.MAXUNIT
Supplies
VpSupply voltage7.51218V
VFBflyback supply voltage2 x VP4566V
Iq(P)(av)average quiescent supply currentduring scan-1015mA
Iq(FB)(av)Iq(FB)(av)during scan--10mA
Ptottotal power dissipation--8W
Inputs and outputs
Vi(p-p)input voltage (peak-to-peak value)-10001500mV
Io(p-p)output current (peak-to-peak value)--2.0A
The MC14052B analog multiplexer is a digitally–controlled analog switch.
The MC14052B effectively implements a DP4T solid state switch. This
device’s feature low ON impedance and very low OFF leakage current.
Control of analog signals up to the complete supply voltage range can be
achieved.
• Triple Diode Protection on Control Inputs
• Switch Function is Break Before Make
• Supply Voltage Range = 3.0 Vdc to 18 Vdc
ºC
ºC
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• Analog Voltage Range (VDD – VEE) = 3.0 to 18 V Note: VEE must be _ VSS
• Linearized Transfer Characteristics
• Low–noise – 12 nV//Cycle, f . 1.0 kHz Typical
This device contains protection circuitry to guard against damage due to high static voltages or electric
fields. However, precautions must be taken to avoid applications of any voltage higher than maximum
rated voltages to this high–impedance circuit. For proper operation, Vin and Vout should be constrained
to the range VSS _ (Vin or Vout) _ VDD. Unused inputs must always be tied to an appropriate logic
voltage level (e.g., either VSS, VEE or VDD). Unused outputs must be left open.
7.4)AN5277(Dual Channel SEPP Power Amplifier)
The AN5277 is a monolithic integrated circuit designed for 10.0 W (26 V, 8 W)output audio power
amplifier. It is a dual channel SEPP IC suitable for stereo operation in TV application.
Features
• Few external components :
• No Boucherot cells(output C, R)
• No Bootstrap Capacitors
• No Negative Feedback Capacitors
• Built-in muting circuit
• Built-in standby circuit
• Built-in various protection circuits (Load-short, thermal, over-voltage and current)
• High ripple rejection(55 dB)
• Compatible with AN5275, AN5276
• Operating voltage range 10 ~ 32 V(26 V typ.)
7.5)ICE1QS01(Controller for Switch Mode Power Supplies Supporting Low Power
Standby and Power Factor Correction (PFC))
Features
• Line Current Consumption with PFC
• Standby Input Power < 1 W
• Stable Standby Frequency
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• Low Power Consumption
• Very Low Start-up Current
• Soft-Start for noiseless Start-up
• Standby Burst Mode with and without
Control Signal for lowered Output Voltages
• Digital Frequency Reduction in small Steps
at Decreasing Load
• Over- and Undervoltage Lockout
• Switch Off at Mains Undervoltage
• Mains Voltage Dependent Fold Back Point
Correction
• Ringing Suppression Time Controlled from
Output Voltage
• Easy Design In
• Free usable Fault Comparator
Functional Description
The ICE1QS01 is optimized to control free running flyback converters with and without Power Factor
Correction (with PFC Charge Pump). The switching frequency is reduced in small steps with
decreasing load towards a minimum of 20 kHz in standby mode. This function is performed by a digital
circuit to avoid any jitter also with periodically pulsed loads. To provide extremely low power
consumption at light loads, this device can be switched into Standby Burst Mode. This is also possible
without standby control signal (for adapter application). Additionally, the start up current is very low. To
avoid switching stresses of the power devices, the power transistor is always switched on at minimum
voltage. The device has several protection functions: VCC overand undervoltage, mains undervoltage
and current limiting. Regulation can be done by using the internal error amplifier or an opto coupler
feedback. The output driver is ideally suited for driving a power MOSFET. The ICE1QS01 is suited for
TV-sets, VCR- sets, SAT- receivers and other consumer applications in the power range from 0 to app.
300 W.
Connect a digital voltmeter to the cathode of diode D610 at the AV mode of the TV and set the screen voltage
to the minimum with the screen potentiometer. Adjust the main supply voltage (B+) with P601 potentiometer to
the following value (after supply adjustment, readjust Screen and focus voltage).
21” : 122 VDC (for A51QDX993X030)
2. SERVICE ADJUSTMENTS
To enter the Service Mode, ‘Service In/Out” button on the Service Remote Control or activate the “Picture Menu”
with the user remote control and press “9301” (Press “0” button to exit the Service Mode). To exit from the
service menu, TV/TX button should be typed on the Remote Control.
While the service menu is on screen, version and the date of the software are written on right bottom of the
screen.
For Example:
SK5.256-01 T09
12:07:26
10/03/05 F1
2.1 AGC Adjustment
• Switch to Service Menu
• Find the “AGC METHOD” under “OPTIONS” sub-menu with P+/P-,
• Set its value to “SYNC+PEAK WHITE”.
• Find “AGC” under “IF ADJ.” sub-menu with P+/P-,
• Set its value to “4”
• Find “AGC FOR VHF I” under “IF ADJ.” sub-menu with P+/P-,
• Set its value to “4”
• Set “PIP AGC” topic‘s value to “15”
• Set “PIP AGC FOR VHF I” topic‘s value to “20”
• Exit from the service menu.
2.2 Screen Adjustment
• Switch the TV to the AV mode
• Do not make any connecttion from the scart switch
• Switch on the service menu
• Set the value of “BLUEBLACK” option to “OFF”
• Set the value of the “SCREEN ADJ.” to the indicated value in FACTORY SETTINGS TABLE
• Press “OK” button on the RC
• There should appear a horizontal line on the center of the set
• Adjsut the screen potentiometre to set the line at the first seen point.
• Exit from the service menu
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2.3 White Balance Adjustment
• Apply a white pattern with a pattern generator to the antenna input.
• Enter the Service Menu and access to VIDEO ADJ. I sub-menu
• Set the value of “G.CUT OFF” value to “156” and “G.DRIVE” value to “356”.
• Adjust red drive with“R.DRIVE” and blue drive with “B.DRIVE” .
• Adjust red cut off with “R.CUT OFF” and blue cut off with “B. CUT OFF”
• If white balance can not be adjusted properly, slightly change the values of “G.CUT OFF” and “G.DRIVE”.
• Exit from Service menu.
2.4 Geometry Adjustments
• Apply the cross hatch pattern with a pattern generator to the antenna input.
• Enter Service Menu and access to GEOMETRY sub-menu
• The options, “50Hz GEOM.”, “50Hz. GEOM.HOR.II”, “50Hz GEOM.EHT” are for PAL/SECAM.
• The options, “60Hz GEOM.”, “60Hz. GEOM.HOR.II”, “60Hz GEOM.EHT” are for NTSC.
• Adjust Vertical Amplitude with “VERTICAL AMPLITUDE” option.
• Adjust vertical centring with “VERTICAL SHIFT”, vertical linearity with “LINEARITY” , vertical s-correction with
“S-CORRECTION”, vertical parallelogram with “VERTICAL ANGLE”, vertical bow with “VERTICAL BOW”,
horizontal centering with “HORIZONTAL SHIFT”, trapeze adjustment with “TRAPEEZE CORR.I”, general
parabole adjustment with “CUSHION CORR.I” options.
• Adjust the parabole of the top corners with “UPPER CORNER 1” and “UPPER CORNER 2”.
• Adjust the parabole of the bottom corners with “LOWER CORNER 1” and “LOWER CORNER 2”.
• Adjust the horizontal OSD centering with “HORIZONTAL OSD POSITION” and vertical OSD centering with
“VERTICAL OSD POSITION”
•For NTSC adjustments, connect an NTSC signal from AV1 follow the adjustments explained above under
the sub-menus “60Hz GEOM.”, “60Hz. GEOM.HOR.II”, “60Hz GEOM.EHT”.
•Exit from the Service Menu.
2.7 Options Menu
Enter the Service Menu with the Service RC and and access to OPTION sub-menu and the options and their
defitinons are written below.
AV1YUV : AVAILABLE(Component input is available from Scart 1); N/A(Not Available)
AV2&AV3 : AV2&AV3 N/A (Not Available); AV2 AVAIL.-AV3 N/A (AV1 Available, AV2 Not Av.);
AV2&AV3 AVAILABLE ( Both Available)
AV4 : NONE(No Front AV); CVBS+SVHS(Both Available); CVBS ONLY(Front AV Available);
SVHS ONLY(SVHS available)
TELETEXT : DEFAULT(Teletext); FASTEXT; TOPTEXT; FASTEXT+TOPTEXT
LANGUAGE : 1 (English, French, German, Italien, Spanish, Portuguese, Dutch, Greek, Danish, Swedish,
Only Vertical protection avaliable); BCL&VERTICAL(Both avaliable)
PANORAMA : AVAILABLE; N/A
KEYBOARD : P-P+V-V+; MENU P/V-+
GAME : AVAILABLE; N/A
ALARM TIMER : AVAILABLE; N/A
DVD LANG : A; B; C; D
DEMO : 0(Otoprogram in first start, closed); 1(open)
2.7 Sound Options Menu
BG : EUROPE(BG Europe); NEW ZELLAND(BG New Zelland); AUSTRALIA(BG Australia); N/A(BG not
avaliable)
DK : AVAILABLE; N/A
I : AVAILABLE; N/A
L/L’ : AVAILABLE; N/A
FM RADIO
/ TV GUIDE : NONE(Radio&EPG, not available); FM RADIO(Only radio avaliable); TV GUIDE(Only TV Guide
avaliable)
NICAM : AVAILABLE; N/A
DOLBY VITUAL : AVAILABLE; N/A
BASS OPTION : DYNAMIC BASS(Dynamic Bass avaliable); SUBWOOFER(Subwoofer avaliable); NONE
HEADPHONE : AVAILABLE; N/A
CARRIER MUTE : VIA MSP; VIA MICRO
PAT : AVAILABLE(Picture and Text avaliable); N/A
SIMPLE HOTEL : AVAILABLE; N/A
HOTEL MAX
VOL : Limites the max volume level in hotel mode
AGC METHOD : SYNC PEAK WHITE; FIXED
TILT : N/A; AVAILABLE
CRT 4:3,
MODE 16:9 : VIA FLYBL(Prevents cut off line to be seen by shifting up); DISABLE CUTOFF( Directly Prevents Cut
off line to be seen)
2.7 Hotel Mode
If “Simple Hotel” option in the Service Menu is selected as “ON”, to access set up menu “4658” should be typed
whilst the “Features Menu” is on screen. After finishing the adjustments by taking the TV to St.by or shutting down,
the access can be re-inhibited.
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2.7 Factory Settings for Service Mode
Values given in Table 1 are typical values and can vary according to the CRT type.
X203CONN.HOUSING X2003 RE
X204CONN.HOUSING X2003 BLAC
X205CONN. CINCH .......BLACK HOR. L6B032937
X301CONN.HOUSING X2004 GRE
X302CONN.HOUSING X2003 GRE
X401
X402CONN.HOUS.2P 2317-2S JST B 2B-XH-A RED032993
X402-1CONN.MALE 5 RIGHT-A 2317-5R JST S 5B-XH-38889
X402-2CONN.HOUSING.2P 2.5MM HORZ.250GX402-X402-2CABLE HAR.CFIZ 2'LI TUS T. DVD L=...MMKX5530
X403CONN.HOUS.3P 2317-3S JST B 3B-XH-A RED31646
X403-DVDCABLE 3'LU 2317 BEYAZ KON.L=330 FER+SUNY08509
X404CONN.HOUSING 2.5TMK 2104 GRI31989
X406CONN.HOUS.5P 2317-5S JST B 5B-XH-A RED031196
X406-X402-1CABLE 5'LI RED/WHI CON.L=370 K5KX5512
X407CONN.HOUS.2P 2317-2S JST B 2B-XH-A WHITE31245
X407-DVDCABLE BLEND/FER. 2'LI L=430 DIG.AUDI
X501CONN.HOUSING 2'LI GRE
X502CON.HOUSING LOCKED 5/431777
X503CABLE WITH HOLDER 3+1P L=430 CRT/SASI K1KX1553
X601CON.HOUSING 2P MALE31675
X602CON.HOUSING 2P MALE TPK75(POW)12.6 RED31797
X603CON.MALE 5'LI 2317-5S JST B5B-XH-A BLACK38890
X603-DVDCABLE 5'LI BLACK/WHI MINI KON.L=...K5 FEKX5513
X703CRT SOCKET NARROW INCHANG31532
X921KONN. CINCH ........... YELLOW HOR.14.1031165
X922KONN. CINCH ........... RED HOR.14.1031164
X923KONN. CINCH ........ WHITE HOR.14.1031163
X925CONN.S-VHS031795
X941HEADPHONE JACK YKB21-5103031423
ZD501DIODE Z. BZX55C 15
ZD502DIODE Z. BZX55C33 52MM302318
ZD503-ZD504DIODE Z. BZX55C8V2 26MM302294
ZD601DIODE Z.TZMB9V1303454
ZD602DIODE Z. BZX55C5V1302298
TR502DST 21PF TR/2416003313132 28KV K1040150R-T1See the "CPT Difference List", too
TR601SMPS 20/21 EL/ 2084.0130 23V050150R-E1See the "CPT Difference List", too