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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.
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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