Text preview for : TV2KR-TXT 40-MNTV2KR-L2T TDA935X_6X_8XPS_N2 UC3842.pdf part of Service Manual



Back to : TV2KR-TXT 40-MNTV2KR-L2T | Home

TV2KR - TXT
COLOUR TELEVISION RECEIVER

SERVICE MANUAL

SECIFICATION · SYSTEM · POWER INPUT · POWER CONSUMPTION · AERIAL IMPEDANCE · TUNER · RECEIVING CHANNELS
PAL/SECAM BG/DK/I AC 170-245(50/60Hz) 65W 75 OHM UNBALANCED FREQUENCY SYNTHESIZER TUNING VHF-L VHF-H UHF E2-S6 S7-S41 E21- E69

· PROGRAMME · PICTURE TUBE · SOUND OUTPUT · SPEAKER · AV JACKS

MAX. 100 PROGRAM MEMORIES 14", 15", 20", 21"; 90° 2.0W 3W 8OHM FULL SCART X 1

CAUTION: Before servicing the chassis, read the "Safely Precaution". "X -Ray radiation
Precaution" and "Product Safety Notice" in this manual.

X-RAY RADIATION PRECAUTION
1. Excessive high voltage can produce potentially hazardous X-RAY RADIATION. To Avoid such hazards the high voltage must be specified limit. The normal value of the high voltage of this receiver is 24.5KV +/-2KV under 230V AC power source. The high voltage must not exceed 27KV. 2. Each time a receiver requires servicing the high voltage should be checked following the HIGH VOLTAGE CHECK procedure in this manual. It is recommended the reading of the high voltage be recorded as a part of the service record. It is important to use an accurate and reliable high voltage meter. 3. The primary source of X -RAY RADIATION in this TV receiver is the picture tube. For continued X-RAY RADIATION protection, the replacement tube must be exactly the same type tube as used in this TV receiver. 4. Some parts in this receiver have special safety-related characteristics for X-RAY RADIATION protection. For continued safety, parts replacement should be undertaken only after referring the PRODUCT SAFETY NOTICE below.

SAFETY PRECAUTION
WARNING: Service should not be attempted by anyone unfamiliar with the necessary Precautions on this receiver. The following are the necessary precautions to be observed before servicing this chassis. 1. Since the power supply circuit of this receiver is directly connected to the AC power line. An isolation transformer should be used during any dynamic service to avoid possible shock hazard. 2. Always discharge the picture tube anode to the CRT conductive coating before handling the picture tube. The picture tube is highly evacuated and if broken, glass fragments will be violently expelled. Use shatterproof goggles and keep picture tube away from the unprotected body while handling. 3. When replacing a chassis in the cabinet, always be certain that all the protective devices are put back in place, such as: nonmetallic control; knobs, insulating covers, shields, isolation resistor-capacitor, network, etc. 4. When replacing parts or circuit boards, disconnect the power cord. 5. When replacing a high voltage resistor (metal oxide resistor) on circuit hoard, keep the resistor APP. 10mm(1/2 in.) away from circuit board. 6. Connection wires must be kept away from components with high voltage or high temperature. 7. If any fuse in this TV receiver is blown, replace it with the FUSE specified in the chassis parts list. 8. The receiver is designed to operate with 230V(50Hz) AC mains.

2

PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in this chassis have special safety-related characteristics are often passed unnoticed by a visual inspection and the X-RAY RADIATON protection afforded by them cannot necessarily be obtained by using replacement components rated for higher voltage. The use of substitute replacement parts that do not have the same safety characteristics as specified in the parts list may create shock, fire, X-RAY RADIATION or other hazards.

GENERAL ADJUSTMENT AUTOMATIC DEGAUSSING
An automatic degaussing coil is attached around the picture tube, degaussing the tube properly in about one second after the set is switched on. If the receiver is moved or faced on a different direction, the power must be switched off at least 15 minutes in order that the automatic degaussing circuit operated properly. External degaussing is necessary if the automatic degassing proves ineffective after the set is moved.

B+ ADJUSTMENT
CAUTION: To avoid X-ray hazards and result in a nominal display width, B+ voltage must be set in
the scale of 110.0V+/-0.5V. 1. Make sure the AC power supply is 230V, 50Hz. 2. Switch on the TV receiver, tune in an active channel. 3. Measure the voltage between C318 on Main P.C. Board by DC voltmeter. 4. Set contrast, brightness, color to maximum. 5. Adjust RP301 on Main P. C. Board for B+110.0V+/-0.5V voltage reading.

3

HIGH VOLTAGE CHECK
CAUTION: There is no high voltage adjustment in this chassis, B+110V voltage directly relates to
the high voltage. The high voltage does not exceed 27KV under any conditions. 1. Connect an accurate high voltage meter to the second anode cap of the picture tube. 2. Turn on the receiver, set brightness and contrast to minimum (Zero beam current). 3. Make sure the high voltage does not exceed 27KV. 4. NO matter whether the luminance, contrast and chrominance controls are set to maximum or minimum, the high voltage must be kept under 27KV.

FOCUSING
Receive a TV test pattern signal; adjust controls for optimum picture. Adjust Focus Control for a well-defined, sharpest display in the center area of the screen.

ADJUSTMENT AND SERVICING THE CHASSIS
SERVICE MODE
To enter the service mode, short service mode points on PCB (X202, pins 1&2) or press from ST-BY mode STATUS>MENU>MUTE>ST-BY on RC. TV will display service menu as following table 1 line by line. To select the parameter by using the `P+/P-' keys. To adjust the selected parameter by using the `V+/V-' keys. To quit the service mode, press the `TV' key on remote control when in the service mode. Table 1
SERVICE MODE (enter: to short service mode points or press from ST-BY mode STATUS>MENU>MUTE>ST-BY)

Control bits HS VHS VA VAZ VS SC CL Y IFO Vg2 Vg2BR Horizontal Shift Vertical Shift

Function

Value 31 30 30 1 33 22 7 7 32 OK sreen 32 VX

Notes

Vertical Amplitude Vertical expand (zoom) Vertical Slope S-Correction Cathode drive Level Y Delay IF PLL Offset adjusment Screen Voltage Alignment mode Brightness control setting voltage alignment mode in

50 .. 95 Volt drive

Screen VR (on the FBT)

4

BLOR BLOG R G B AGC BCF OSO AGN IE2 ACL FSL BKS IFO AGCs FFI AV2 SVID PF RPO TSM TSH TBL TBM TBH DELAY STEP HOTEL LOCAL BRT CONTR 16:9

Black level off-set R Black level off-set G White point R White point G White point B AGC Take Over Point Black Current loop Failure Overscan Switch-Off Sound pre-amplifier +6 db RGB Insertion Enable Automatic Colour Limiting forced vertical slicing level BlacK Stretch IF frequency selection AGC time constant Fast filter IF-PLL AV2 inbut enabled SVID input enabled Peaking centre frequency RATIO PRE-/OVERSHOOT Limit between VHF1/VHF3 Limit between VHF3/UHF Code for band VHF-1 Code for band VHF-3 Code for band UHF Delay time for tuner 0-50 kHz, 1-62,5 kHz Hotel mode anabled 6/3buttons keyboard swich Brightness control in service mode Contrast control in service mode 16:9 mode enabled

32 32 32 32 32 35 TOP 0 1 1 1 1 0 1 0 0 0 1 0 1 3 157 443 01 02 04 32 0 0 0 32 32 1 (IF) IF AGC speed
For special conditions (descramblers with unstable black level) the vertical slicing level can be forced to 70% under all conditions by setting FSL = 1.

Gain FM demodulator

5

IC DESCRIPTIONS AND INTERNAL BLOCK DIAGRAM · TDA9351 · STV9302 · TDA7056A · 24C08W6 · 74HC4053 · UC3842 TDA9351:
The various versions of the TDA935X/6X/8XPS/N2 series combine the functions of a TV signal processor together with a µ-Controller and US Closed Caption decoder. Most versions have a Teletext decoder on board. The Teletext decoder has an internal RAM memory for 1 or 10 page text. The ICs are intended to be used in economy television receivers with 90° and 110° picture tubes. The ICs have supply voltages of 8 V and 3.3 V and they are mounted in S-DIP envelope with 64 pins. Features: TV-signal processor

· Multi-standard vision IF circuit with alignment-free PLL demodulator. · Internal (switchable) time-constant for the IF-AGC circuit. · A choice can be made between versions with mono intercarrier sound FM demodulator and
versions with QSS IF amplifier.

· The mono intercarrier sound versions have a selective FM-PLL demodulator which can be
switched to the different FM sound frequencies (4.5/5.5/6.0/6.5 MHz). The quality of this system is such that the external band-pass filters can be omitted. Source selection between `internal 'CVBS and external CVBS or Y/C signals. Integrated chrominance trap circuit. Integrated luminance delay line with adjustable delay time. Picture improvement features with peaking (with variable centre frequency and positive/negative overshoot ratio) and black stretching.

· · · ·

· Integrated chroma band-pass filter with switchable centre frequency. · Only one reference (12 MHz) crystal required for the µ-Controller, Teletext- and the colour
decoder.

· PAL/NTSC or multi-standard colour decoder with automatic search system. · Internal base-band delay line. · RGB control circuit with `Continuous Cathode Calibration', white point and black level offset
adjustment so that the colour temperature of the dark and the light parts of the screen can be chosen independently.

· Linear RGB or YUV input with fast blanking for external RGB/YUV sources. The Text/OSD
signals are internally supplied from the µ-Controller/Teletext decoder.

· Contrast reduction possibility during mixed-mode of OSD and Text signals.
6

· · · · · · ·

Horizontal synchronization with two control loops and alignment-free horizontal oscillator. Vertical count-down circuit. Vertical driver optimized for DC-coupled vertical output stages. Horizontal and vertical geometry processing. Horizontal and vertical zoom function for 16:9 applications. Horizontal parallelogram and bow correction for large screen picture tubes. Low-power start-up of the horizontal drive circuit.

µ-Controller

· · · · · · · · · · · · · ·

80C51-controller core standard instruction set and timing. 1µs machine cycle. 32 - 128Kx8-bit late programmed ROM. 3 - 12Kx8-bit Auxiliary RAM (shared with Display and Acquisition). Interrupt controller for individual enable/disable with two level priority. Two 16-bit Timer/Counter registers. One 16 bit Timer with 8-bit Pre-scaler. WatchDog timer. Auxiliary RAM page pointer. 16-bit Data pointer. Stand-by, Idle and Power Down (PD) mode. 14 bits PWM for Voltage Synthesis Tuning. 8-bit A/D converter. 4 pins which can be programmed as general I/O pin, ADC input or PWM (6-bit) output.

Data Capture

· Text memory for 0, 1 or 10 pages. · In the 10 page versions inventory of transmitted Teletext pages stored in the Transmitted Page
Table (TPT) and Subtitle Page Table (SPT).

· Data Capture for US Closed Caption. · Data Capture for 525/625 line WST, VPS (PDC system A) and Wide Screen Signalling (WSS) bit
decoding.

· Automatic selection between 525 WST/625 WST. · Automatic selection between 625 WST/VPS on line 16 of VBI. · Real-time capture and decoding for WST Teletext in Hardware, to enable optimized-processor
throughput.

· · · · ·

Automatic detection of FASTEXT transmission. Real-time packet 26 engine in Hardware for processing accented, G2 and G3 characters. Signal quality detector for video and WST/VPS data types. Comprehensive teletext language coverage. Full Field and Vertical Blanking Interval (VBI) data capture of WST data.

Display

· Teletext and Enhanced OSD modes. · Features of level 1.5 WST and US Close Caption.
7

Serial and Parallel Display Attributes. Single/Double/Quadruple Width and Height for characters. Scrolling of display region. Variable flash rate controlled by software. Enhanced display features including overlining, underlining and italics. Soft colours using CLUT with 4096 colour palette. Globally selectable scanlines per row (9/10/13/16) and character matrix [12x10, 12x13, 12x16 (VxH)].

· · · · · · · · · · · · · · · · ·

Fringing (Shadow) selectable from N-S-E-W direction. Fringe colour selectable. Meshing of defined area. Contrast reduction of defined area. Cursor. Special Graphics Characters with two planes, allowing our colours per character. 32 software redefinable On-Screen display characters. 4 WST Character sets (G0/G2) in single device (e.g. Latin, Cyrillic, Greek, Arabic). G1 Mosaic graphics, Limited G3 Line drawing characters. WST Character sets and Closed Caption Character set in single device.

PINNING SYMBOL P1.3/T1 P1.6/SCL P1.7/SDA P2.0/TPWM P3.0/ADC0 P3.1/ADC1 P3.2/ADC2 P3.3/ADC3 VSSC/P P0.5 P0.6 VSSA SECPLL VP2 DECDIG PH2LF PH1LF GND3 DECBG AVL/EWD VDRB VDRA IFIN1 IFIN2 IREF VSC

PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

DESCRIPTION port 1.3 or Counter/Timer 1 input port 1.6 or I2C-bus clock line port 1.7 or I2C-bus data line port 2.0 or Tuning PWM output port 3.0 or ADC0 input port 3.1 or ADC1 input port 3.2 or ADC2 input port 3.3 or ADC3 input digital ground for µ-Controller core and periphery port 0.5 (8 mA current sinking capability for direct drive of LEDs) port 0.6 (8 mA current sinking capability for direct drive of LEDs) analog ground of Teletext decoder and digital ground of TV-processor SECAM PLL decoupling 2nd supply voltage TV-processor (+8V) decoupling digital supply of TV-processor phase-2 filter phase-1 filter ground 3 for TV-processor bandgap decoupling Automatic Volume Levelling /East-West drive output vertical drive B output vertical drive A output IF input 1 IF input 2 reference current input vertical sawtooth capacitor 8

TUNERAGC AUDEEM/SIFIN1 DECSDEM/SIFIN2 GND2 SNDPLL/SIFAGC AVL/SNDIF/REF0/ AMOUT HOUT FBISO output AUDEXT/QSSO/AMOUT EHTO PLLIF IFVO/SVO VP1 CVBSINT GND1 CVBS/Y CHROMA AUDOUT/AMOUT INSSW2 R2/VIN G2/YIN B2/UIN BCLIN BLKIN RO GO BO VDDA VPE VDDC OSCGND XTALIN XTALOUT RESET VDDP P1.0/INT1 P1.1/T0 P1.2/INT0

27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

tuner AGC output audio deemphasis or SIF input 1 decoupling sound demodulator or SIF input 2 ground 2 for TV processor narrow band PLL filter /AGC sound IF Automatic Volume Levelling/sound IF input/subcarrier reference output/AM output (non controlled) horizontal output flyback input/sandcastle external audio input/QSS intercarrier out/AM audio output (non controlled) EHT/overvoltage protection input IF-PLL loop filter IF video output/selected CVBS output main supply voltageTV-processor (+8V) internal CVBS input ground 1 for TV-processor external CVBS/Y input chrominance input (SVHS) audio output/AM audio output (volume controlled) 2nd RGB/YUV insertion input 2nd R input / V (R-Y) input 2nd G input / Y input 2nd B input / U (B-Y) input beam current limiter input / (V-guard input) black current input / (V-guard input) Red output Green output Blue output analog supply of Teletext decoder and digital supply of TV-processor (3.3 V) OTP Programming Voltage digital supply to core (3.3 V) oscillator ground supply crystal oscillator input crystal oscillator output reset digital supply to periphery (+3.3 V) port 1.0 or external interrupt 1 input port 1.1 or Counter/Timer 0 input port 1.2 or external interrupt 0 input

STV9302A:
The STV9302A is a vertical deflection booster designed for TV and monitor applications. This device, supplied with up to 35V, provides up to 2App output current to drive the vertical deflection yoke. The internal flyback generator delivers flyback voltages up to 70V. In double-supply applications, a stand-by state will be reached by stopping the (+) supply alone. Features:

· Power Amplifier · Flyback Generator · Output Current up to 2App
9

· Thermal Protection · Stand-by Control
PINNING 1. Input (Inverting) 2. Supply Voltage 3. Flyback Generator 4. Ground Or Negative Supply 5. Output 6. Output Stage Supply 7. Input (Non Inverting)

TDA7056A:
The TDA7056A is a mono BTL output amplifier with DC volume control. It is designed for use in TV and monitors, but also suitable for battery-fed portable recorders and radios. Features:

· · · · · · · · · ·

DC volume control Few external components Mute mode Thermal Protection Short-circuit proof No switch-on and off clicks Good overall stability Low power consumption Low HF radiation ESD protected on all pins.

PINNING 1. Not connected, n.c. 2. Positive supply voltage, VP 3. Voltage input, VI 4. Signal ground, GND1 5. DC volume control, VC 6. Positive output, OUT+ 7. Power ground, GND2 8. Negative output, OUT9. Not connected, n.c.

10

24C08W6:
The M24C08W6 is a series of 2-wire, low power 8Kbit EEPROM with a wide operating range. It is organized as 1K-word X 8-bit. It is capable of page write and sequential read. Features:

· · · · · · · · · ·

Two Wire I2C Serial Interface Supports 400kHz Protocol. Single Supply Voltage: 2.5V to 5.5V. Write Control Input. BYTE and PAGE WRITE (up to 16 Bytes). RANDOM and SEQUENTIAL READ Modes. Self-Timed Programming Cycle. Automatic Address Incrementing. Enhanced ESD/Latch-Up Behavior. More than 1 Million Erase/Write Cycles. More than 40 Year Data Retention.

PINNING 1. Connected to ground, A0 2. Connected to ground, A1 3. Connected to ground, A2 4. Connected to ground, A3 5. Serial data input/output, SDA 6. Serial clock input, SCL 7. Write protection Pin, WP : Protection valid - Connected to VCC - Connected to Ground : Protection invalid 8. Power Supply, VCC

74HC4053:
The 74HC/HCT4053 are high-speed Si-gate CMOS devices and are pin compatible with the "4053" of the "4000B" series. They are specified in compliance with JEDEC standard no. 7A. The 74HC/HCT4053 are triple 2-channel analog multiplexers/demultiplexers with a common enable input ). Each multiplexer/demultiplexer has two independent inputs/outputs (nY0 and nY1), a common input/output (nZ) and three digital select inputs (S1 to S3). With LOW, one of the two switches is selected (low impedance ON-state) by S1 to S3. With HIGH, all switches are in the high impedance OFF-state, independent of S1 to S3. VCC and GND are the supply voltage pins for the digital control inputs (S1, to S3, and ). The VCC to GND ranges are 2.0 to 10.0 V for HC and 4.5 to 5.5 V for HCT. The analog inputs/outputs (nY0 and nY1, and nZ) can swing between VCC as a positive limit and Vee as a negative limit. VCC -VEE may not exceed 10.0 V. For operation as a digital multiplexer/demultiplexer, VEE is connected to GND (typically ground).

11

Features:

· Low "ON" resistance:
80 (typ.) at VCC-VEE=4.5 V, 70 (typ.) at VCC-VEE=6.0 V, 60 (typ.) at VCC-VEE=9.0 V.

· Logic level translation: to enable 5 V logic to communicate with 5V analog signals. · Typical "break before make" built in. · Output capability: non-standard.
PINNING PIN 2, 1 5, 3 6 7 8 11, 10, 9 12, 13 14, 15, 4 16

SYMBOL 2Y0 to, 2Y1 3Y0 to, 3Y1 VEE GND S1 to S3 1Y0, 1Y1 1Z to 3Z VCC

NAME AND FUNCTION independent inputs/outputs independent inputs/outputs enable input (active LOW) negative supply voltage ground (0 V) select inputs independent inputs/outputs common inputs/outputs positive supply voltage

UC3842:
The UC3842 provides all the essential features necessary to the operation of the basic current mode controller. PINNING 1. Error amplifier output. 2. Error amplifier inverting input. 3. Current sense comparator. 4. Timing network, RT CT. 5. Device ground. 6. Switching drive output. 7. Device supply voltage input. 8. Voltage reference, 5.0V.

12

13

TV2KR PAL/SECAM, BG/I/DK, MONO
R1 15k X101 A_R_OUT A_L_OUT FB_GND G_GND SCART V_GNG V_GND V_OUT GND V_IN VT1 BF422
006

CRT1 GZS10-2-104 R2 390 om VT4 BF422 VT2 BF422
008

R3 15k
27

R4 390 om VT5 BF422 VT3 BF422

R5 15k VT6 BF422

R6 390 om

R7 2.7k R8 2.7k R9 C1 + 2.7k

013 8

R

to FRONT AV
X102 C126 22n R145 4.7k 3 2 x3 1

R/SVHS_C

007

012 6

G B

25

R_GND

A_R_IN

B_GND

A_GND

A_L_IN

S_SW

28

N.C.

N.C.

002

014 11

FB

G

005

009

B

26

IC102 21 20 19 18 17 16 15 14 13 12 11 10 HS0038A2 9 8 7 6 5 4 3 2 1 L107 fb.s 107 R108 R109
v.out

GND

OUT

20

1

2

3

L110
a.l.in a.r.in sw.s b.s

330 om 003

C12 330p
30

VT8 BF423 C13 330p
21

29

R10

+

R12 330 om

R14 330 om C14 330p

24

VT9 BF423

4.7

R103 75 om

R107 75 om R102 10k

R111 2.2k R105

N.C. N.C.

220 om

470 om

HET_

R104 75 om

HET

G1

R112 220 om

G2

R114 75 om

R144 4.7k

R115

R116

VD101 5.1v

TT14 5

117

R110 3,3k
a.s_in

R113

12

9 10

7

L112 10uH

16

12

13

IC101 74HC4053 GND E_ 6

R121 2.7k

2

1

5

3

C111 + 47.0 C113 22n

+5st.by

C107 100p

C108 47p

47p C112

C110 47p

K101 R122 R11
001

0.33 om

TT13

33k

560 om R117

R120

C114 0.47
a.s.in.

+8a

47p

OUT

OUT

OUT

Vee

SW

SW

SW

119

AV1/AV2 11

R119 47k

14

15

10

8

7

4

9

1 uH V_OUT G_SC R_SC A.S IN B_SC

R123 100 om +5st.by KEY

X4_ X4

27 uH A.OUT

K103

+
X201

X3

EXT.V.IN

A_IN1

S.SW

+5

LED

+12

FB

L101 22 uH +5st.by

EXT_V.IN

EXT_V.IN

GND

LED

KEY

A33EKC02X01 KS3300

A36EKM72X11

A48EKB02X01

A51EJJ04X01

b.out1

KS3610

KS4816

R206 100 om

FB

R208 100 om

100 om

5

4

3

2

1

C116

100n

100 om VT102 BC547
+8b

R204 10k

C210

203

+8c

R129 100 om

470 om

+5

231

229

123

R212 330 om
+3a

C207

to FRONT BOARD

204

VD202

C215

9.1v

230

201

R214 180 om

C214 100.0 47p +

236 47p C218 + C219 100n

2.4v R216 10k

C211 47n

C216 100n

C212 100n

100 om TPS 6.0 R217 27k 1n R220 360k
209 210

205

C217

C213 47n

R219 390 om

R215 10k F1 1 2 TU101 IF1 IF2 +30V NC +5V +5V SDA SCL NC NC AGC 11 10 9 8 100.0 100n 7 6 5 4 3 2 1
agc.tun +5.tun 124 135

XT1

47.0

ex.v.in

int.v.in

202

r 46C220 47n

i.cut

208

b.out

g.out

228

K2955 IR 3 4 5
IF2 IF1

227

64

63

62

61

60

59

58

57

56

55

54

53

52

51

50

49

48

47

45

44

43

42

41

40

39

38

37

36

35

34

33

R228

SDA1 IR_

R221 100 om R225 100 om

12 mHz

r.out

b

g

I cutoff

+3.3 V

G out

R out

G/Y

+3.3 V

+3.3V

B out

FB

VPE

+8V

IF_CVBS out

A_out/AM out

A_ext in/Qss_out

XTAL out

SVHS_chrom

IF_pll

RESET

EXT_ CVBS/Y in

INT_CVBS in

P1.2/NT0

OSC_gnd

B/U(b-y)

GndTV1

P1.1/T0

XTAL in

R/V(r-y)

P1.0/INT1_ IR

H_fb/SSC

Hout

EHT

BCL

7 100 om 6

L104 1 uH

8

5

125

+30 VD103 C118 4.7 L105 22 uH R133 3.3k R134 3.3k + UPC574

10n Vcc

+

SCART-SW_(p3.3/adc3)

TEST

AV1/AV2(p3.1/adc1)

24C08W6

IC201

+

KEY(p3.2/adc2)

ON/OFF_(p1.3)

+8
+5

SND_pll/SIFagc

R130 27 om C121 100.0

DEC_sdem/SIFin2

MUTE_p3.0/adc0)

V.tune(p2.0/pwm)

AUD_dem/SIFin1

C119 22n

SDA

SCL

REFO/AMout

VHF-1(P0.5)

VHF-3(P0.6)

GND

DEC_dig

GND_cp

DEC_bg

AGC

+8 V

SDA

VSC

I_ref

SCL

1

2

3

4

5

6

7

8

C122

C602 1n

C123

N.C.

+OUT

10

11

12

13

220n 14

15

16

17

18

19

20

C226 21

22

23

24

25

26

27

28

29

30

31

C232

AV1/2

220n

218

s.w MUT

C225

R230 100 om

R233 100 om

R234 100 om

1k

R232

scl.tun

SCL 127

C228 C227 1.2n 100n +

100n

+5st.by 3 4 1 2 R138 680 om R139 4.7k
128

C233 4.7

R136 100 om

SDA.

R229 100 om

100 om

sda.tun

SDA

SCL.

KY

39.2k

R135 100 om

X202

X_4

213

241

214

215

+

220

32

217

IC601 TDA7056A
221

C230

R231

LED

+ C240

C231 +

R235 3.9k
223

C236 330p IC401 R401 2.7k STV9302A 3
401

P_GND

S_GND

-OUT

C120

1

2

3

4

5

6

7

8

9

N.C.

+VS

IN

VC

470.0

1

2

3

4

9

+

VD104 5.1v

GndTV2

SEC_pll

22n

VssTV3

AVL/ew

A0

A1

A3

GND_a

VDR_B

VDR_A

PH2_lf

PH1_lf

IF_in1

IF_in2

C235 100n

R239 3.3k

R241 1.2k

R240 10k

R238 10k

AV1/AV2

ON/OFF

AGC

VD+

VD-

IF1

A_SC

TU101

1k R321 VD312
336

C407 1n

VD401 1N4002

680 om
301

RGP15D + C328 470.0

+15

C502 470.0 C504 680p
518

VD301

C301

C304 1n
305

VD302 1N4007 C303 100.0

+

R307 39k
340

C325 27n R310 39k VD308 RG2 7 T301 BCK-35-0218 8

!
335
326

0.22 om

14 C501 + +8 C406 470.0

C326 680p C318 100.0 +

327

VD305 1N4007

VD304 1N4007

R301

MF72

329

1n

1n

318

316

3 9
322

IC302 2 C307 + 470.0 C130 100n IN LM317 OUT REG 1 R305 1.2k VT302 BC547 330 3 + R302 220 om
331

+12 +8 C302 100.0 R306 15k C330 10.0 +110

C517

C305 47.0
328

10

C317 470p R308 0.22 om 325 VD303 RGP15D C309 680p

12k

FLYB

501

303

302

R303 C308 470p
321

1N4148

C314 220n L301

R311 4.7k
317

VD505 R505 1k 1N4148 L501
502

3 1 5 SV
503

TT6

FV

2.2

514

VD306

R304 150k

0.22 om

R312

+30

100n

!

1N4007 1n
304

R504 0.47 om

+110

100n VD501 1N4148

VD503 RGP15J

2

*

C505 330n

R315

VD309

RG2

C310 RV1

C311
306

IC301 UC3842 1 COMP Vfb GND Rt/Ct Vcc OUT Isens Vref 7
311 6

10 om
310

VD307 1N4148

315

2 1n 1 R323 27 om

13 14

C324 VT301 STP5NK60Z
333

100 uH C511 4.7n

C507 22.0

+

VT501 4 C516 330p TT3 C509 C510 680p

9.6 nF -5%+3%

MZ72K18RM270

R313 180k R314 1k
324

C319 220n 308

270 om

320

323

X302 ~220V

F301 3.15 A

470 om

R322 820 k

!

RP301

4.7n +

1n

334

313

RGP15D VD311

X301

C315 4.7n

!

DEGAUSSING COIL

!

C322 2.2n

C312 100.0

VD510 1N4002

E1

2

507

100n

+

ETH

2.4 om

!

509

R316 20k

C316 10n

R319 10k

C321 47.0

R320 0.33 om

R325 RGP15D 12 m +

!

VD507 1N4148 1 + C313 100.0 14 C129 +3.3 VD509

R508

307

4

8

C320

C323

R318 1k

VD506 RGP15J

510

VD310

R309 56 om
332

IC303 L78L33ACZ

ST1803DHI 4 HD.TR

TT4

508

!

5

3

519

ET2448

!

VD315 1N4148 R317 680 om

12

ON/OFF C512 H.DR 100n

+

VT502 BSR52

505

511

2

3 2 1

T502

5

504

312

314

6

11

520

3 C131 100n

+12 1N4002

C515

100.0

+

R141

AGC

+3.3

+8

1N4148

1N4148

S.SW

47k

IF2

VD204 FB

MUTE

C124 22.0 +

KEY

VD105
agc_

R142

2.2k

L206 22 uH

C243 216 1.0

C246 + 10.0

3.3n

R403 10 om

C244 1n

C408 1n VDR406

22n

404

100n
402 403

470 om R408

100n

R404 2.7 om

R143 12k

10k VT103 BC547 +5

C237 100.0 R251 R242 2.2k

240

1n

R137 10k

R236

7

6

5

4

3

2

+

+

*

+8e

4.7n R237 15k

243

W11

C242

406

1

+

10.0

VT204 BC557 R211

int.v.in1

100p

R127 120k R128

100n

207

X203 X5

121

+3.3 L205 33 uH L201 L204 33 uH 33 uH

R209

C115

BC557
+3c

100n C208 + 100.0 R210 100 om

206

A_SC

234

2.2n

VT201

C205

VT101 BC547

1k

R207 27k

VD203 1N4148

R205 91 om

R125

235

C201

100p

22.0

L202 22 uH C206

100n

g.out1

47p

C204 47.0 +

KS5160

ETH

233

R124 150 om

A51EKS41X11 KS5171

G_SC

B_SC

R_SC

AUD

R201

+

C203

IR

238

130

C202

+8

A.OUT

R202 10 om

+8d

R203 100 om

V_OUT

237 3

C245

14"

15"

CRT TUBE 20"

21"

21" RF

1

5

4

2

PART Z1 Z2 Z3 F1

VARIANTS SOUND SYSTEM 1-BG/I 2-BG/DK TPS 5,5 TPS 5,5 TPS 6,5 TPS 6,0 K2962 K2955

IR

VT202 L203 4.7 uH BC547 PART Z1 TT2 TT3 Z2 TT4 TT6 Z3 R245 1k ETH FLYB H.DR A_IN1 AUD TT12 TT13 TT14 L502

OFF OFF OFF ON ON OFF OFF 105 uH

ON OFF OFF OFF ON OFF OFF 39 uH

OFF ON ON ON ON OFF OFF 105 uH

ON OFF ON OFF ON OFF OFF 105 uH CF0801 -4780 1,03 V/0,31V R605 + C603 47.0 C608 +OUT2 330p -OUT2 C606 + X_2

TPS 5.5

VT203 BC547 R213

1k VD201

TPS 6.5

C221 100n

R218 100 om
scl_1 sda_1 226

SCL1

C222

R222 27k

T501 CF0801 -4780 MUTE +15

CF0801 CF0801 -4780 -4780

100 om R224 C224

211

R223 100 om C223 4.7

R601 750 om

1.8k

IC202

TDA9351

R226 100k

R243 4.7k

R227 3k +8

FOCUS

2

5

4

3

1

2

3

4

+

1

HV

L102

TT7

220 om

K102

-

100 om

CRT BOARD

VD102 L103 LED

R16 0.68 om SCREEN

0_IN

1_IN

0_IN

1_IN

0_IN

+Vcc

1_IN

R15

118

L111 10uH

019

TT12

MENU

C19 4.7n

1

R101 3,3k

33k

C109

004

018

GND

F

HV

100.0

L108 CB6A

R106 75 om

TT8

47.0

22n

VD6 1N4148

v.csart

220 om

470 om

C125 10.0

g.s

r.s

C101 +

75 om

105

47 uH

CB6A

C103 +

C105

+

VT7 BF423

2,2V R604 2.2 om R603 390 om

C605 220n

2,5V

_IN2

X601

2.2 C241 22n

X501

V DEFLECTION COIL

R140

C238

10.0

C239 1.2n VD+ R407 1k

C401
407

C402 R405 2.7k
-14 408

C403 R402

4 TT2 1 * 2 X_4 H DEFLECTION COIL

C404 47.0
405

C405 100n R501 0.47 om
516

3 om

VD502
515

T501 PET-21-07 HV R502 1k

RGP15J C503 680p
517

8

L502 HL105UH

9

7

VD504 RGP15J C506 +

R503 22k

!

+

HV FOCUS SCREEN

6

!
R507 10 om C514 470p

R506 10k

C508 47n X502X_4 2

C513 + 10.0

! !

3 R509 180k 4 1

R512

2005.01.07