GRUNDIG BUSH 1431 Grundig, 1432 Grundig, 1471T Grundig, 1472T Grundig, 2160NTX Grundig CONTINENT CT1411, CT1412 CROWN CTF1401R, CTF1402T, CTF2001R, CTF2005NFT GRUNDIG GT1401, GT1402, GT2001, GT2003, GT2101, GT2103, GT2105, P37-065 MATSUI 14R1 Grundig, 20R1 Grundig MINERVA MT3711(H), MT5112 РЕКОРД 51ТЦ5171, 54ТЦ5171 Service manual & schematics

Page 1

Page 2

Page 3

TP101. IC100, pin 4. Oscillator waveform 2V/ div. 10uS/div

TP102. IC100, pin 6 Drive output. 5V/div at 10uS/div.

Page 4
Power Supply

The power supply is a conventional flyback power transfer isolated switch mode system. AC line voltage is applied, via an isolating double pole switch, a fuse and RFI filter, to the degauss coil and bridge rectifier. Diodes D100-D103 form a full wave bridge rectifier with the resultant DC voltage filtered by C103, C104 [and C134] and fed to the switch mode transformer T100. IC100 controls the switch mode operation and supply regulation as a fixed frequency pulse width modulation drive to T100 via transistor TR100. R105 and C107 set the oscillator frequency.

Regulation

C123

Regulation is determined by an error voltage tap off of the transformer T100, pin 11, via diode D105 and VR100 to pin 2 of IC100. Within IC100 this error voltage is compared to a fixed reference and the pulse width output on pin 6 is varied accordingly. If the output voltage falls due to increased load then the 'on' time of TR100 is increased to compensate by varying the PWM signal on its base. Note that the heatsink of TR100 is not isolated and is at a high voltage.

Over current protection.

The power supply is overcurrent protected by IC100 sensing the excessive current flowing through TR100. R113, R114, D112, D113, R112 and C113 form a network to set the sense current value. A voltage proportional to the current flowing through TR100 is developed across R113 and R114 in parallel. D112 and D113 limit the voltage applied to the IC sense pin 6. R112 and C113 filter out noise and spikes to prevent erroneous operation. In the event of an over current situation and the sense threshold is exceeded then IC100 will remove the PWM drive to TR100. After a short period of time the drive is reinstated and if the fault has not cleared it will shut down again.

A secondary supply is 110V for the line output stage, this is regulated to 33V across across a close tolerance shunt regulator, D120. A 9V supply is produced by D114/ C115 this is regulated to 5V by IC102

Control of electrostatic discharge and RFI is done by the isolating components C114 and R115.

1000uF 16V

C134 F8 E . 470nF 500V 75990-200 17
C122 G9 1µF/50V 10000-200.11
C125 E12 470uF 25V
C127 G12 1000uF 35V 75988-015.52
C129 E13 470uF 50V
C131 H12 10nF/400V 75990-500.02
D100 J9 1N4007 8309-215-127
D101 J8 1N4007 8309-215-127
D102 18 1N4007 8309-215-127
D103 J9 1N4007 8309-215-127
D104 J11 BA157 8309-201-103
, D105 13 BAS16 SOT23 8309-210-016
D107 110 BA159 8309-210-101
D108 К4 BSX84C 2V4 75990-200 20
D100 .110 114 BA157 75990-200.20
D110 010 нз BYD 37K 75990-500 03
D112 .110 110 1N4007 75990-200.81
D112 110 1N4007 75000-200.81
D114 FQ BV200 8300 204 060
D114 F9 D ( 235
D / 235
8309-204-060
D116 D1299 0309-204-000
D110 E11 DA157 0309-200.21
D117 DA 137 8309-200.21
D118 GIZ B1299 8309-204-060
D119 EIS BA137 8309-200.21
D120 K7 ZIK33B 8305-306-003
F100 L11 Fuse 1A1 75990-200.22
F101 F12 Fuse 1.6AI
IC100 J11 IC3844 /5990-200.23
IC102 G8 IC7805 8305-202-906
IC102 CLIP 75990-200.24
L100 L9 RFI CHOKE 75990-200.25
R100 K8 PTC MONO 75990-300.30
or PTC DUO 79550-300.10
R101 K9 68K 2W 75990-200.27
R103 111 100R 1/4W 8765-098-049
R105 J11 7K5 1/4W 75990-200.28
R106 150K SMD 8706-100-125
R107 J2 24K SMD 8706-100-106
R108 J3 6K8 SMD 8706-100-093
R109 110 1K2 5W 75990-200.29
R110 K10 82R 1/2W 75990-200.30
R111 14 470R SMD 8706-100-065
R112 1K0 SMD 8706-100-073
R113 J10 1R8 1/4W MF
R114 J10 1R2 1/4W MF
R115 G9 10M VR23 75990-200.31
R116 F10 0R22 1/4W 75990-200.32
R117 112 100k 1W
R118 J10 47R
R119 C7 8K2 1/2W 8765-098-095
R120 F7 8K2 1/2W 8765-098-095
R130 F12 0R22 1/4W 75990-200.32
R131 F12 0R22 1/4W 75990-200.32
R132 F12 0R22 1/4W 75990-200.32
TR100 110 MJF18204 TO220 75990-200.33
TR100 CLIP 75990-200.34
TR100 HEATSINK
T100 G10 MAINS TX See P.24
SW100 112 MAINS SWITCH 75990-200.36
B\/100 112 VAR RES 4K7 75990-200 37
AV IOU 012 0000-200.07
STEDE
C104 100uE 75000-100 36
C104 19 407 10000-100.00
0100 111 202
110 MOSEET 75000-500 05
E100 110 75000-500.00
F100 Fuse 2.5A 75000 500.31
1 102 нч Steleo Ver. 13990-000.00

POWER SUPPLY (100) Description Part Number 1 10 220nE 250v AC 75990-200 83 75000_200.00 0100 .19 C101 10 75990-200.00 C102 10 75990-200.00 C103 10 75990-200.00 C104 19 100nF 400V 8531-573-022 C106 .110 100uE 25\/ C107 V11 4-7 621/ C109 111 6n9 100V C100 111 220nE 63\/ 8672-160-142 13 470nE SMD C111 μа 75000-200 18 C112 K10 212 1001/ 8452-966-286 .13 470nF SMD 75990-200 19 C114 G9 2n2 250V AC 75990-200.82 C115 470uE 16V 0115 Ga 220E 16V C119 ~~ 100pE SMD 8672 167 270 C110 K7 10pE SMD 8672-167-758 C120 E10 1000E 160V 75088_01# 47

75952-500.03

Page 5

Page 6

Page 7

POWER SUPPLY (100)

Page 8

TP302, TR301 Collector, line drive. 20Vdiv, 20us/div. This waveform is without C313 fitted

0.5Vdiv. 20us/div. Note that the waveform sits

TP301. TR301 Base, or TR800 Collector.

above the 0V reference.

TP303. Line output drive on the collector of TR302. A x10 probe must be used with care. The example is compressed for illustration purposes, The expected value is approximately 825V p/p.

Λ Ν Λ
Π
Π Ī ĺ
Π Ī ĺ
I T 1

ſ
t
-
[ 1. l

0V

TP204. Vertical scan coil current measured across R211. 1V/div. Note that the voltage is symetrical about 0V

TP201. Vertical drive. This is best measured on IC800

the zero reference.

pin 7. 1V/div. 5ms/div

TP203. IC200 Pin 5. Vertical drive with flyback. 10V/div, 5ms/div.

TP202. Flyback and VSYNC source. 10V/div. 5ms/div

Page 9
Field output Stage

The TDA8170 IC200 is a power output amplifier designed to drive the vertical scan coils directly with a sawtooth current signal. A sawtooth voltage waveform is fed into pin 1 from pin 7 of IC800. An internal flyback generator supplies a flyback pulse on pin 3, this is limited to 4.7V by R207 and D202 and is used as the vertical timing pulse for the on screen display and as a blanking pulse. C201 and D200 form a voltage doubler for the supply to IC200's output drive circuit.

Line Driver

The line drive signal from IC800 is firstly clamped by D804 then inverted by TR800. the resulting drive signal is fed to TR301 line drive stage. Line drive is then fed to line output transistor TR301 via the inverting transformer T311. TR302 drive both the split diode transformer T300 and the line scan coils on PL351. Line Output stage

The line output stage has to perform a number of functions for the system., firstly it provides power and the waveform to drive the horizontal scan coils on the CRT yoke. Secondly it provides high voltages for the tube EHT final anode along with focus and G2 bias. Thirdly it provides two secondary LT voltages, 15V and 26V and via regulator IC300 a further 12V supply. Fourthly it provides high voltage supplies 150/180V for tube base video amplifiers and also the tube heater supply. C300 is selected for the type of tube fitted as are the scan correction components L300, L301, R300 and R301. The 15V supply across C308 is used for bias for the beam current sensing circuit via R350 that is selected according to the tube used. Transistor TR300 is fed with a pulse from the primary of T300 via R302 & R303. Diode D305 clamps the level to 5V and prevents damage to TR300, from the emitter of TR300 horizontal pulses are utilised for line blanking, synchronisation in the line oscillator PLL and on screen display horizontal timina

- FIELD STAGE (200)
Ref Ι B Description Part Number
C200 F8 470uF 35∨
C201 E7 220uF 35V
C202 F7 4n7 SMD 8672-167-254
C203 F7 10pF SMD 8672-159-122
C204 E7 220nF 63V
C205 F8 4u7 50V
C206 D8 2200uF 25V 8415-166-150
1000uF 25V 8452-967-147
D200 F8 1N4007 8309-215-127
D202 G7 BZX84C 4V7 75990-200.38
IC200 F7 TDA8170 8305-348-170
IC200 CLIP
R200 F8 4R7 1/4W
R201 F7 6K8 SMD 8706-100-093
R202 F7 18K SMD 8706-100-103
R203 F7 4K7 SMD 8706-100-089
R204 F6 OR SMD 75988-011.49
R205 F6 10K SMD 8706-100.097
R206 E8 1R0 1/4W 75990-500.29
R207 F6 10K SMD 8706-100-097
R208 F7 10K SMD 8706-100-097
R209 D8 330R 1/4W 8700-007-461
R210 D9 2K7 1/2W 8765-098-283
R211 E8 1R0 1/4W 75990-300.19

LINE OUTPUT STAGE (300)

Ref I B Description Part Number
C300 B 8 7n2 1600V 75990-300.03
7n5 1600V 75990-300.25
7n9 1600V 75990-300.02
8n2 1600V 75000 000 0
75990-300.01
C201 9110 1000V 75000 200 50
0301 00 3200F 100V 75990-300.56
390nE 160V 75990-300.20
430nF 160V 75990-300.04
470nF 160V 75990-200.40
C302 C11 47uE 250V 75990-200 41
C303 B7 27nF 250V 75990-200.41
C304 B6 1nF 1KV 75990-200 16
C305 B8 10nF SMD 8672-167-758
C306 D8 22pF 1KV 8515-911-092
C308 C11 220uF 25V
C310 C11 470uF 35V
C312 D12 10uF 250V 75990-200.43
C313 A9 33nF 250V 75990-200.44
C320 A7 100nF SMD 8672-167-270
C321 A7 100nF SMD 8672-167-270
C350 A13 100nF 63V
D4 2 DA467 8200 204 402
D12 BA157 8309-201-103
2001 011 DA137 8200 201 103
202 011 BA157 8309-201-103
7304 BR BY133 75990-200 4 5
0305 50 18 BAS16 SOT23 8309-210-016
5000 10 5/(010 00120
C300 A7 IC7812 8305-302-581
_300 СЭ 35uH
65uH 75990-300.08
80uH 75990-300.07
_301 - B9 47uH 75990-300.28
150uH 75990-300.06
_302 D11 100uH 75990-200.46
300 C9
R301 C9 820R 1/4W 75990-300.09
302 D7 220K 1/4W 8765-097-129
303 C8 220K 1/4W 8765-097-129
R304 H8 22K SMD 8706-100-105
R305 18 4K7 SMD 8706-100-089
R306 H8 1KO SMD 8706-100-073
R307 M8 1K0 SMD 8706-100-073
310 B6 47R SMD 8706-100-041
R311 B11 1R0 1/4W
312 B11 0R68 1/4W X
313 C7 5K6 1/2W
314 C7 6K8 4W mo 75000 000 40
315 C13 10R 1/4W 75990-300.12
310 C13 75990-300.34
300 010 18K 1/4VV 8700-007-505
D12 See P 24
C300 B12 EHT TX See P.24
F211 87
57 75000 400 40
De на DU04/ SU123 100.10
10200 D0 DF422 1092
MIE18204 TO220
75000-200 22
11302 00 14101 10204 10220 10000-200.00
Page 10

Specification Main voltage 220-240V (full range regulation 190-264V) Screen size 14"/37cm diagonal Picture size 34cm Power consumption 50W. Standby - 8W Aerial input Coaxial 75 ohms Channel Capacity 99 + AV TV standard 1W Audio power output 0-400 0 Enviromental Safety HD195 / EMC EN55013 & EN55020

Safety Instructions

The products identified in this Service Manual were manufactured to meet strict Quality and Safety Standards. It is imperative that the Safety Standards are observed when carrying out repairs to ensure that this product always conforms to IEC 65 or VDE Regulations and the harmonised National Safety Regulations, eg. Low Voltage Directive (73/23/EEC), the Low Voltage Electrical Equipment (Safety) Regulations, 1989 (UK) and the Electricity at Work Regulations, 1989 (UK) before it is returned to the owner.

This symbol: A is used to identify components which conform to IEC or VDE guidelines! When these components

require replacement, for continued compliance and protection, use only the original components specified in this Service Manual (list of spare parts). For continued protection against the risk of fire, the type and rating of fuses (nominal value, characteristic and rupture rating) used as replacements must be as specified by the Standards! After any repair, it is imperative that the Leakage Current and/or Insulation Resistance is checked as described. If the result of the check indicates that the product does not conform, the user/owner must be notified in writing. If the user/owner requests that the product is to be returned in a defective condition, the written warning must draw notice to the risks.

In all cases

- The mains plug and the fuse fitted must be checked and any defect found corrected.

  • The mains lead, and any other connecting leads, must be checked for damage and defects reatified. Check the insulation!
  • The functional reliability of all tension relief and bending protection bushes provided in the product must be checked and defects rectified.
  • For continued safety compliance, safety determining parts in this product must not be damaged or evidently unsuitable. This is especially valid for insulators and insulating parts.
  • Use specified parts only. For components and assemblies marked with the safety symbol the original specified spare parts only are strictly to be used.
  • Use, if applicable, only information published in Technical Bulletins.
  • Thermally loaded solder pads and those passing large currents, known by experience to cause a risk, must be thoroughly cleaned and re-soldered.
  • Ensure that the ventilation openings are not obstructed or contaminated with dust.
  • Ensure the proper disposal of exhausted batteries and accumulators (hazardous waste environmental protection!)
  • For all receivers, ensure that the aerial system conforms to BSI CP 6330:1983.
  • Maintain records of all checks, remedial action and disposal.
Safety Standard Compliance

After repairing a product which originally conformed to Safety Class II (double insulated), the Insulation Resistance and/or Leakage Current with the product switched on must be checked to VDE 0701 or to the National Safety Regulations quoted above.

The products covered by these Instructions conform to the Safety Class II, as identified by the symbol:

Warning After repairs are carried out to parts within this product, the Safety Instructions given in VDE 0701 (Repair Instructions) and/or VDE 0860/IEC65/ EN60065 (Product Specification) must be observed.

Components conforming to IEC or VDE Approval Specification! For replacement purposes, use parts with the same specification only!

Electrical Safety after repairs

According to the Product Liability Laws, the Manufacturer is responsible for ensuring that the product presents no danger to the user when used correctly. This risk is especially important with products which are operated from the mains voltage supply. To ensure that the safety parameters are maintained especially after repairs have been carried out, it is imperative that the product is tested as specified in a recognised Test Procedure.

Page 11

LINE AND FIELD OUTPUT (200) & (300)

Page 12

TP401. Demodulated video signal with sound carrier. 2v/div and 20us/div

TP404. Signal on VIDEO A with colour bar input to the SCART connector, TV switched to AV. 0.5V/div and 20us/div

Tuner and Demodulator

The Tuner can be one of two versions depending upon the transmission system. For the UK PAL I the tuner is a Salcomp1590R. For all other European PAL and SECAM systems the tuner is a Salcomp 1490R. Both tuners are pin compatible the difference being that the UK version is UHF only. For European systems the 1490R is a multiband tuner. Both tuners are of the voltage synthesis type with the tuning voltage being controlled by the system micro IC500. AGC control of the tuner is determined by the demodulator IC400.

Tuner Band switching

On the 1490R tuner band switching is determined by the system micro and the interface transistors TR500/ 1/2. These transistors act a voltage switches controlled by the PA4, PA5 and PA6 ports of the system micro. SAW Filter options

Tuner If outputs are balanced and can be fed into a number of balanced input SAW filters, SAW450, SAW600 and SAW601. The number and type of SAWs fitted is determined by the system to be received. In the basic chassis SAW601 is fitted. However this can be a different type of SAW depending on the system being received. The later version of the NICAM stereo TV uses SAW600 and IC601 to filter out the 6.5Mhz NICAM carrier

Vision IF Demodulator

IF outputs from the selected SAW filter are fed into pins 19& 20 of IC400, an STV8224 dedicated IC. In most cases the only adjustment is tank coil L401. However, when SECAM LL is used additional components around this section of circuit are fitted. Demodulated video and intercarrier sound are fed out on pin 3 of IC400. Filter circuits separate video and audio carriers using ceramic filters CF400 and CF401.

Dual Sound systems

CF400 is the normal 6Mhz ceramic filter. CF401 and switching components are added for dual sound systems and CF400 or CF401 can be selected. Audio carriers are sent to input pin8 for demodulation. The video signal has the audio carriers filtered out and it is split into pin 10 of IC400 and out as Video-B to the Scart connector, after buffering by TR700. External video and Audio signals enter IC400 on pins 12 and 16 respectively. IC400 performs signal routing under the control of the system micro with audio out on pin 14 and video on pin11 as Video-A

Tuner AGC control

The STV8224 also carries out the function of AGC control for the tuner. The threshold level is set up on pin 24 of IC400.

A/V Switching.

IC400 Pin4 is low for TV and high for external input. It can be forced to external by connecting Pin 4 to 11V via a 5K6 resistor

Audio Amplifier

Internal audio is fed out from pin14 of IC400 to the audio power amplifier IC550. The volume level is set in IC400 by the micro controller operating on pin 13 of IC400.

Page 13
TUNER STAGE (600) TI UNER S STAGE (600) BG & V HF/UHF
Ref Ι B Description Part Number Ref Ι B Description Part Number
C600 A6 33uF 16V R518 B9 5K6 SMD
C604 A5 47uF 25V R519 B9 5K6 SMD
R520 B9 5K6 SMD
R600 A9 4K7 SMD 8706-100-089 R521 B8 3K3 SMD 8706-100-085
R601 A9 OR SMD 75988-011.49 R522 B 9 3K3 SMD 8706-100-085
R523 B8 3K3 SMD 8706-100-085
1 600 A6 10uH 1.020 50 0700-100-000
1 601 C5 10H TP500 BO BC857 S0T22
1 6501 85 680uH TD501 BO BC957 S0T23
LINGUT 00 000011 TD501 D9
P0
BC057 S0123
TUNICO 72771 140 0 TROUZ Da BC037 30123
TUNOU 0 65 TUNER OFF 13111-1409 TUNICO 75000 000 54
0 414/00 OF 14051 M 0 80 1490 VHF/UHF 75990-200.54
SAVV60 01 D4 OFW J1951 M TUN60 085 1590 UHF 75990-300.63
BG 5.5 Mhz s ound o nly
IF STAGE (400) SAW60 )1 D4 4 OFWG1961M 75990-200.55
C400 E11 68pF SMD 8672-160-132
C402 D12 22nF SMD 8672-167-262 CF400 SFE B E2 5.5Mhz 75990-200.56
C404 C2 470nF 63V CF401 TPS I E2 5.5Mhz 75990-200.57
C405 D12 100nF SMD 8672-167-270
C406 E3 220nF 63V NICAM Versi on
C407 E11 4n7 SMD 8672-167-254 SAW60 0 D4 OFW J3252 75990-500.08
C408 E12 100nF SMD 8672-167-270 10600 C4 TDA4445B 75990-500 32
C409 F11 100nF SMD 8672-167-270 1 602 D4 10uH 75990-200 71
C410 C3 4u7 50V 1603 B4 6u8H 75990-500 34
C411 •• D11 22nF SMD 8672-167-262 1 604 R4 75990-200 53
C413 C3 011 330F 161/ C601 C4 220nE 10000-200.00
C414 00 D10 68nE SMD 75990-200 50 C602 04 P10 10nE 8673 167 758
C415 D10 8672-167-758 C002 ыю IONE 0073-107-730
C416 БА 010 0072-107-700
C417 04 E10 9672 167 270
C417 EIU 00/2-10/-2/9
0418 04 1/0 9679 467 970
0503 TUURF SMD 00/2-10/-2/0
10.400 070/000/ 75000 000 54
10400 D3 STV8224 75990-200.51
IC400 D3 STV8224A (Stereo) /5990-500.27
-
L400 F2 10uH
L401 D3 COIL 75990-200.53
R400 E11 2K2 SMD 8706-100.081
R404 D12 470R SMD 8706-100-065
R405 E11 330R SMD 8706-100-061
R412 C11 220R SMD 8706-100-057
R415 E11 100R SMD 8706-100-049
R419 F3 220K 1/4W
R420 F2 180K 1/4W
R422 E4 1K0 1/4W
R423 E4 15K 1/4W
R426 C3 22R 1/4W
R461 F8 2K2 SMD 8706-100-081
R462 F8 470R 1/4W
1.10L
TR453 F8 BC847 SOT23 75990-100 10
10
CF400 F2 SEE 6 0Mbz
CT401 F2 TPS 6 0Mbz

IF SCREEN

Page 14

a manual

.

Page 15

Page 16

TUNER (600) & IF CIRCUIT (400)

Page 17

TP501. IC500 Pin 26 Hsync. 2V/div and 50us/div TP502. IC500 Pin 27 Vsync. 2V/div and 5ms/div

TP503. IC500 Pin 2. Volume Pulse Width D/A TP504. IC500 Pin 1. Tuning Pulse Width D/A Both 2V/div and 10us/div

TP503. IC500 Pin 35. I/R data from remote control.

System Microcontroller

The ST6365 is a dedicated microcontroller for TV applications. It has many features such as dedicated voltage synthesis tuning control, AFC control and an on screen graphics display generator. Also there is a dedicated IR serial data input port for remote control. An I2C bus is used to communicate with other controllable ICs. An 8Mhz ceramic resonator is connected to pins 31 & 32 with two 100pF capacitors, C507 & C508, for the main timing clock. All functions are controlled and timed from this clock. Local control via the key buttons is via the matrix on ports PB0/1/2/4/ 5

Tuning Voltage Synthesis

The tuning voltage is present on pin 1 as a pulse width modulator, it is inverted by TR410 to a 33V pulse width variable square wave. It is converted into a 0-33V ramp by a three stage integrator R505-R507 and C500 - C502. Within IC500 is a 14 bit counter giving 16384 steps that allow a resolution of 2mV over the 32V tuning range. Coarse tuning is achieved by pulse width modulation of the 7 most significant bits and fine tuning by Bit Rate Multiplication of the 7 least significant bits.

AFC control

For channel selection purposes the output of the tuning voltage synthesizer can be changed by either the remote control or local keyboard. The AFC feedback control voltage is generated by IC400 and fed back to pin 9 of the controller. As the tuning oscillator drifts up or down an error voltage is developed on pin 2 of IC400. This error voltage can be negative or positive with respect to the optimum voltage, it is fed to pin 9 of IC500 and digitised. If the digital value is optimum then no change takes place. If the value is higher or lower than the optimum then the resultant error value is added to or subtracted from the value in the tuning voltage register. Port PB6 is a mute input and performs this function when text is displayed or when no signal is present to the text circuit and no sync coincidence takes place.

SCART connector.

Port PA0 detects a signal on pin 8 of the SCART connector and switches to the incoming vision and sound. Port PA1 monitors the blanking signal on pin 16 of the SCART connector and also from text and its own OSD output. Port PA2 is the control line for SAW450 for Band switching

Ports PA4 to PA6 are the band switching selection

Port PA7 switches on LED500.

Pins 22-25 are the on screen display output RGB drives. Pins 26 & 27 are the sync inputs for the on screen display generator timing

Pin 33 is the hardware nower on reset.

Pin 34 is the SECAM detect switch.

Pin 35 is the IR input serial port.

Pin 36 is the BG/DK system selector switch

Pin 37 is available as a stand-by line for external use. In normal stand-by the controller shuts down all circuits that provide drive to output stages, thereby placing the TV in quiescent current consumption mode.

Pin 39 drive the sound mute transistor TR550. Pins 40 & 41 are the dedicated 12C bus

Page 18
MIC CROCOMPUTER (50) 0)
Ref Ι B Description Part Number R509 K7 3K3 SMD 8706-100-085
C500 B5 100nF 63V 8672-167-270 R510 J8 3K3 SMD 8706-100-085
C501 K7 100nF 63V 8672-167-270 R511 E5 5K6 1/4W
C502 K6 100nF 63V 8672-167-270 R512 L7 3K3 1/4W
C504 D11 33uF 16V R513 L7 100K SMD 8706-100-121
C505 N8 22pF SMD 8672-160-126 R514 L7 10K SMD 8706-100-097
C506 M9 22pF SMD 8672-160-126 R515 M7 180R SMD 8706-100-055
C507 L9 100pF SMD 8672-159-134 R516 L7 180K 1/4W
C508 L9 100pF SMD 8672-159-134 R517 L7 2K2 SMD 8706-100-081
C509 L5 33uF 16V R524 M5 820R 1/4W
C510 E3 10uF 50V R525 M5 2K2 1/4W
C515 L8 10nF SMD 8672-167-758 R526 M5 2K2 1/4W
C540 L5 33uF 16V R527 M5 2K2 1/4W
C541 L8 10nF SMD 8672-167-758 R528 L7 390R 1/4W
C542 K8 10nF SMD 8672-167-758 R529 Μ7 10K 1/4W
C543 K8 100nF SMD 8672-167-270 R530 M7 220R SMD 8706-100-057
R531 N5 10K SMD 8706-100-097
D500 N10 RED LED 75990-200.61 R532 J8 1K0 SMD 8706-100-073
D501 K4 1 N4148 8309-215-045 R533 L7 10K 1/4W
D520 K4 1N4148 8309-215-045 R534 L7 47K SMD 8706-100-113
D503 K4 1N4148 8309-215-045 R535 L7 2K2 SMD 8706-100-081
D504 K4 1N4148 8309-215-045 R540 L5 22K 1/4W
D540 L10 BZX84 3V9 SOT23 75990-200.62 R541 4K7 SMD 8706-100-089
R542 H13 4K7 SMD 8706-100-089
IC500 L6 ST6365 G1000-1-1 75990-200.63 R545 L10 470R SMD 8706-100-065
IC500 L6 ST6365-Stereo 75990-500.04 R546 L10 1K0 SMD 8706-100-073
IR500 N9 TFMS 5380 75990-200.64 R547 L10 470R SMD 8706-100-065
L500 М5 56uH 75990-200.6 5 TR410 K6 2N3904 TO92
L540 K5 10uH 75990-200.66 TR540 L10 BC847 SOT23 75990-100.10
TR541 L10 BC337 TO92
R505 J7 47K SMD 8706-100-113 L10 BCX19 SO193 /5990-200.67
R506 J8 22K SMD 8706-100-105 004.014 75000 000 00
R507 K8 22K SMD 8706-100-105 CR500 L56 CSA 8Mhz /5990-200.68
R508 K7 22K SMD 8706-100-105 CN500 L6 MICRO SOCKET

TP506. IC500 Pin 41. Serial Clock TP507. IC500 Pin 40. Serial Data Both 2V/div and 50us/div. shown synchronised.

Page 19

Products conforming to Safety Class II

Insulating resistance measurements as specified in VDE 0701/ part 200.

The insulation resistance between all electrical functioning stages and metallic cabinet parts that can be touched must be proved.

Measurement of the Insulation resistance to VDE 0701

Connect an Insulation Test Meter (test voltage- 500V DC) to both mains poles simultaneously and between the cabinet and all other functional parts made from metal or metal alloy. EG. Aerial and connecting sockets, buttons, decorative trims, screws etc.

The product is fault free if the Insulation resistance is > 2Mohm with a source voltage of 500V DC for a test period > 1 second.

NOTE: The Insulation Resistance in some Safety Class II products can be < 2Mohm, depending upon construction and the value of static discharge components. In these cases the Leakage Current is significant and must be checked also.

Measurement of the Leakage Current to VDE 0701

Connect a Leakage Current Meter (Test voltage 240V AC) to both mains poles simultaneously and between the cabinet and all other functional parts made from metal or metal alloy. EG. Aerial and connecting sockets, buttons, decorative trims, screws etc.

The product is fault free if the Leakage Current is < 1MA at V source 240V AC for a test period > 1 second.

For testing to VDE0701 / EIC65 / BS415 etc. suitable equipment can be purchased from ;

Seaward Electronic Ltd, Bracken Hill, South West Industrial Estate, Peterlee, Co. Durham, SR8 2JJ. Tel: 0191-5863511

SAFETY PRECAUTIONS

Internal adjustment, repairs or component replacement should only be carried out by qualified and skilled personnel. Persons utilising this service manual must have a basic knowledge of television receivers and their operation. It is assumed that such persons have an understanding of switch mode power supplies and can comply with current workshop practice relating to such power supplies and printed circuit boards and the danger of:-

ELECTRIC SHOCK HAZARD.

WARNING

This receiver operates on UK mains electricity supply of 240V AC 50Hz. The mains lead supplied with the receiver is fitted with a standard 13A UK plug (BS1363) fitted with a 3 amp fuse (BS1362).

Safety regulations demand that the receiver must be restored to its original condition in the respect of seals and power insulation and that safety components are replaced by original manufacturer's parts. Safety components are clearly marked upon the service manual by A.

IMPORTANT SERVICE NOTES:

The G1000 series TV's were manufactured by a factory in France. Spares are suplied by Grundig International or its distributors. As many different tubes were used these are not supplied as spares and in the event of a tube failure the whole TV may be replaced by the supplier as a spare part; check before advising the customer.

In early versions when fine tuning was used the software did not return to AFT mode and tuning drift occured. Retune the channels without entering the fine tuning mode.

Leakage in C816,817,818 may cause a blank screen, check DC levels.

White blank screen check 150/180V rail, Reduced width and twice line speed indicates a micro failure (IC500). NICAM. This service manual was produced for the standard mono chassis, NICAM was added later and not all of the information was available at that time. Apologies for any gaps in part numbers, where there is no part number a standard component may be used. Please ensure that safety components are always replaced by the original Grundig part.

While every car has been taken to ensure accuracy please accept my apologies for any errors that I did not spot. During production changes have been made to the printed circuit and components, mainly SM have been moved about. In particular three pin diodes have been changed to the cylindrical glass diode type of construction favoured by Grundig, Germany.

Page 20

MICRO CONTROL (500)

Page 21

TP601. IC651 Pin 2. Teletext input video signal, AC coupling TP606. IC651 Pin 3. Video teletext data input. Not to sc and delayed timebase

TP602. IC651 Pin 17. Teletext data aquisition window. 2V/div and 0.2ms/div

TP603. IC651 Pin 13. Teletext data signa

TP604. IC650 Pin 3. Video input signal at line rate.

TP605. IC650 Pin 22. Green output signal 2V/div and 10us/div

Page 22
Teletext Ontions

The text chip set is the Texas Instruments two chip Videotext decoder set Depending on what system is required Eurotext or Unitext determines what IC650 will be, with accompanying component changes. IC651 is the data slicer and timing signal generator. Timing signals are all generated with respect to the master clock that is derived from crystal XT650. At 13 875 MHz this is twice the text data rate.

The master clock is synchronised to the clock run-in signal at the beginning of each data packet. The resultant data is then outputted to IC650 along with the data clock and other timing signals. IC650 then decodes the data and produces the text display for the screen. If the TV signal is present the all of the timing signals are locked to the incoming syncs.

If the TV signal is not present then the system generates its own sync so that text stored in memory can still be displayed in a stable form. All commands and customer selection are transferred via the I2C bus from the microcontroller

RGB outputs are fed to IC800 in parallel with OSD and SCART inputs with the fast blanking signal to switch input pin 21 of IC800. For Eurotext the outputs are fed directly to IC800 whilst buffers are used for Unitext.

Ref
C650
C651
C652
C654
C655
C656
C657
C658
C659
C660
C662
C663
C664
C665
C664
C665
C666
C667
C670
I
J2
J2
  • J13
  • J13
  • J13
  • J13
  • I13
  • I13
  • I12
  • J11
  • J11
  • J11
  • J11
  • J11
  • J10
Description
10nF SMD
220pF SMD
15pF SMD
15pF SMD
10nF SMD
220pF SMD
10nF SMD
10nF SMD
10nF SMD
82pF SMD
2n2 SMD
100nF SMD
10nF SMD
10nF SMD
10nF SMD
33uF 16V
Part Number
8672-167-758
8672-167-250
8672-160-124
8672-167-758
8672-167-758
8672-167-758
8672-167-758
8672-167-758
8672-159-122
8672-167-158
8672-167-270
8672-167-758
C678 J11 100pF SMD 8672-159-134
D650 L10 BAS16 SOT23 8309-210-016
D651 J12 BB731 SOT23 75990-200.69
D652 J11 BAS16 SOT23 8309-210-016
D653 J10 BAS16 SOT23 8309-210-016
D654 J10 BAS16 SOT23 8309-210-016
D655 I10 BAS16 SOT23 8309-210-016
IC650 J1 CT70095 ANF 75990-200.70
IC651 J1 CF72306 8305-972-306
IC651A J1 CF70200 Fastext 75990-500.27
L650 |2 10uH 75990-200.71
L651 J3 COIL 75990-200.72
R650
R651
R652
R653
R654
R655
|1
|2
J13
I13
J12
J12
4R7 1/4W
10K SMD
1K0 SMD
6K8 1/4W
33K SMD
100K SMD
8706-100-097
8706-100-073
8706-100-108
8706-100-121
R656
R657
R658
R659
R660
R661
R663
R663
R665
R667
13 J11
J11
J10
J10
J10
J10
J11
J10
I10
100R 1/4W
33K SMD
8K2 SMD
4K7 SMD
2K2 SMD
4K7 SMD
10K SMD
2K2 SMD
4K7 SMD
8706-100-108
8706-100-095
8706-100-089
8706-100-081
8706-100-089
8706-100-097
8706-100-081
8706-100-089
R668 110 2K2 SMD 8706-100-081
R670 110 4K7 SMD 8706-100-089
R671 110 680R SMD 8706-100-069

TELETEXT STAGE (650)

R673

R674

R675

R676

R677

TR650

TR651

TR652

TR653

XT650 J1

.110

110

110

110 4K7 SIVID 0100-100-009
110 2K2 SMD 8706-100-081
110 4K7 SMD 8706-100-089
110 680R SMD 8706-100-069
K11 1K0 SMD 8706-100-073
J13 820R SMD 8706-100-071
|11 150K SMD 8706-100-125
J12 10K SMD 8706-100-097
J12 56K SMD 8706-100-115
.110 BC847 SOT23 75990-100 10

BC847 SOT23

BC847 SOT23 75990-100.10
BC847 SOT23 75990-100.10
13.875 MHz 75990-500-07

75990-100 10

Page 23

Page 24

Page 25

TELETEXT (650)

Page 26
Ref т в NICAM DECODER
Description
Part Number L3 10uH 75990-20
C1 - 10uF L40 150uH 75990-20
C2
C3
1uF CT2 DSS30655 75000 50
C4 1nF CT3 DSS30655 75990-50
C5 1nF
390pF
CT4 DSS30655 75990-50
C7
C8
390pF
10uF
XT1 18.432Mhz 75990-50
C9 10uF D1 BZX79C4V7 72008-39
C10 10uF D2 1N4148 8309-215
C11 1005 D3 BZX79C6V8 75987-39
012 D4 1N4148 8309-215
C14 100nF D5 1N4140 8309-215
C15 3u3 D7 LL 103 75990-50
C16 470pF 75990-200.19
C17 470pF 75990-200.19 R2 47K
C18 330nF R3 100R
C20 10uF K4 100R
C21 100nF RS 1008
C22 330nF R7 470R
C24 47pF R8 470R
C25 47pF R9 470R
C26 4p7
4p7
R10 470R
C28 100nF R11
R12
2N2
22K
C29 10uF R13 75R
C30 100nF R14 75R
C31 47uF R15 470R
C32 330nF
330nF
R16 470R
C34 4n7 R18 467
C35 4n7 R19 10K
C36 4n7 R20 4K7
C37 4n7 R21 10K
C39 - 10uF
10uF
K22
R23
150R
150R
-
C40 47uF R24 150R
C41 470nF R25 75R
C42 2u2 R26 4K7
C43 2u2
2u2
R27 4K7
C45 202 R28
R20
4K7
C46 220uF or 8n2 R30 1K0
C47 220uF R31 18R
C48 22uF or 100uF R32 1K0
C49
C50
100nF or 22nF R33 18R 75000 20
C51 2.200uF R34
R35
75990-30
C52 100nF R36 4K7 10000-00
C53 470uF R37 4K7
C54 470uF R38 4K7
C55 10uF
100pF
R30 10K
C50
C57
100nF R40
P41
1KU
2P2
C58 1uF R42 4K7
C70 8n2 R43 2K2
C71 8n2 R44 1K0
C412 10nF R45 1K0 .
R46 330R
IC1 MSP3410 75990-500.18 R4/ 220R
1K0
IC2 TDA2007A 75990-500.14 R49 2K2
IC2 TDA2615 75990-500.23 R50 47K
IC3 78M05 75990-500.15 R51 1K0
L2 10uH 75990-200.76 R52 1K0

Page 27
L3 10uH 75990-200.71 R53 1K0
L4 10uH 75990-200.71 R54 1K0 Ī
L40 150uH 75990-300.06 R55 4K7 (
R56 6K8 (
CT2 DSS30655 75990-500.10 R59 330R (
CT3 DSS30655 75990-500.10 (
CT4 DSS30655 75990-500.10 TR1 BC847 75990-100.10 (
TR2 BC857 8301-000-857 (
XT1 18.432Mhz 75990-500.17 TR3 BC847 (
TR4 BC327 75990-500.12
D1 BZX79C4V7 72008-393.98 TR5 BC847 75990-100.10 ŀ
D2 1N4148 8309-215.045 TR6 BC847 75990-100.10
D3 BZX79C6V8 75987-392.37 TR7 BC847 75990-100.10 L
D4 1N4148 8309-215 045 TR8 BC847 75990-100.10 L
D5 1N4148 8309-215.045 TR9 BC847 75990-100.10
D6 1N4148 8309-215.045 TR10 BC847 75990-100.10 F
D7 LL 103 75990-500.11 TR11 BC847 75990-100.10 F
2. TR12 BC847 75990-100.10 F
R2 47K TR13 BC847 75990-100.10 F
R3 100R TR14 BC847 75990-100.10 F
R4 100R TR20 BC847 75990-100.10
R5 100R ٦
R6 100R
R7 470R
R8 470R
R9 470R NICAM version
R10 470R There are two si anal inputs to this circuit from the tuner/
R11 2K2 ideo from the IE demodulator and the
R12 22K
R13 75R 6.0/6.5WINZ FIVI carriers. IC1 an III
R14 75R MSP3410 decod tes standard FM s ound and NICAM as
R15 470R well as carrying out the functions of Volume and tone F
R16 470R controls and spa itial sounds from th ne I 2 C bus. A clock is Ċ
R17 101 and the second sec a 62 and 62 at 10 422MALL TY/video in
generated on pir 15 02 and 05 at 10. C
R18 4K7 generated on pir
buffered by TR7
00 to IC4 via TR8 a and SCART2 video to
R18
R19
4K7
10K
generated on pir
buffered by TR7
IC4 is via TR20
00 to IC4 via TR8 a
0. IC4 selects TV
and SCART2 video to
or SCART2 by using
R18
R19
R20
4K7
10K
4K7
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
00 to IC4 via TR8 a
1. IC4 selects TV
able control signal
and SCART2 video to
or SCART2 by using
I from IC500 and the
R18
R19
R20
R21
4K7
10K
4K7
10K
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu The
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
R18
R19
R20
R21
R22
4K7
10K
4K7
10K
150R
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
and SCART2 video is
or SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
R18
R19
R20
R21
R22
R23
4K7
10K
4K7
10K
150R
150R
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
and SCART2 video is
or SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERLO' is sent to
R18
R19
R20
R21
R22
R23
R24
4K7
10K
4K7
10K
150R
150R
150R
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
and SCART2 video is
or SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
R18
R19
R20
R21
R22
R23
R24
R25
4K7
10K
4K7
10K
150R
150R
150R
75R
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
15 62 and 65 at 16.
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
e resultant video o
is fed back to the i
The other signal 'V
1 as an output. So
and SCART2 video is
or SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
R18
R19
R20
R21
R22
R23
R24
R25
R26
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
15 62 and 65 at 16.
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
e resultant video o
is fed back to the i
The other signal 'W
1 as an output. So
400, pin 12. In this
and SCART2 video is
or SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
e resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
AS2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
1 as an output. SO
400, pin 12. In this
gnals on SCART2
red by IC1. SCAR
AS2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
IT stereo audio input
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pir
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
1 as an output. SC
400, pin 12. In this
gnals on SCART2
red by IC1. SCART
is 52 & 53. SCART
AS2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
T2 stereo audio input
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
2K2
1K0
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
1 as an output. SC
400, pin 12. In this
gnals on SCART2
red by IC1. SCAR
is 52 & 53. SCART
s 49 & 50. SCART
AS2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
1 audio output signals
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pins
come from pins
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
e resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 53. SCART
36 & 37, SCART2
432MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
1 audio output signals
audio output signals
00000 FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R32
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 50. SCART
36 & 37, SCART2
is 3 & 34. TR12 to
AS2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
18R
75000 000 40 generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
I audio output signals
audio output signals
to TR13 are SCART
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R34
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
18R
1K0
18R
1R or 10R
75990-300.12 generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
00 to IC4 via TR8 a
0. IC4 selects TV a
able control signal
resultant video o
is fed back to the i
The other signal 'V
1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
A32MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
I audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R35
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
18R
1R or 10R
18
R 0r 10R
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
able control signal
aresultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 f
CTR out 1 and CT
case of tuning and
As2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R36
R37
4K7
10K
4K7
10K
150R
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
18R
1R or 10R
1R or 10R
4K7
4K7
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
00 to IC4 via TR8 a
0. IC4 selects TV (
able control signal
a resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
red by IC1. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 f
CTR out 1 and CT
case of tuning and
a TV is switch off
A32MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R32
4K7
10K
4K7
10K
150R
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1K0
18R
1R or 10R
18R
1R or 10R
4K7
4K7
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
e TV is switch off a
is the source output
As2MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R32
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
4K7
4K7
4K7
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
00 to IC4 via TR8 a
0. IC4 selects TV (
able control signal
a resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
red by IC1. SCART
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 f
CTR out 1 and CT
case of tuning and
e TV is switch off
a in the power supp
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R30
R30
R31
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
4K7
4K7
4K7
4K7
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pins
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
a resultant video o
is fed back to the i
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
ad by IC1. SCAR
13. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
ad 3. SCART2
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R30
R40
R41
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
4K7
4K7
4K7
10K
10K
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
a resultant video o
is fed back to the i
The other signal 'V
1 as an output. SO
400, pin 12. In this
gnals on SCART2
ad by IC1. SCAR
5 52 & 53. SCART
36 & 37, SCART2
36 & 37, SCART2
36 & 37, SCART2
5 3 & 34. TR12 1
CTR out 1 and CT
case of tuning and
a TV is switch off
a in the power supp
e selected SCAR
8 & 29 to the stere
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R30
R40
R41
R42
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
4K7
4K7
4K7
10K
1K0
2R2
4K7
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
resultant video o
is fed back to the i
The other signal 'V
1 as an output. SO
400, pin 12. In this
gnals on SCART2
red by IC1. SCAR
5 52 & 53. SCART
36 & 37, SCART2
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
e TV is switch off
in the power supp
e selected SCAR
8 & 29 to the stere
s.
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
T1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R30
R40
R41
R42
R42
4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
10K
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV
able control signal
e resultant video o
is fed back to the i
The other signal 'W
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
add by IC1. SCART
as 52 & 53. SCART
as 52 & 53. SCART
36 & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
ad
432/0112. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
~~~~~
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'W
11 as an output. SC
400, pin 12. In this
gnals on SCART2
add by IC1. SCART
as 52 & 53. SCART
36 & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add & 37, SCART2
add
43210112. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
T1 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
~~~~~
R18
R19
R20
R21
R22
R23
R24
R25
R26
R27
R28
R29
R30
R31
R32
R33
R34
R35
R36
R37
R38
R30
R40
R41
R42
R43
R44
P45
4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
1K0
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'W
11 as an output. SC
400, pin 12. In this
gnals on SCART2
add by IC1. SCART
add by IC1. SCART
add by IC1. SCART
36 & 37, SCART2
add
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supp
e selected SCAR
8 & 29 to the stere
5.
of two audio amp
y be fitted.
432/0112. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
T1 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
~~~~~
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
1K0
2R2
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'W
11 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supp
a selected SCAR
8 & 29 to the stere
5.
of two audio amp
y be fitted.
432/0112. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
T1 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
~~~~~
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 4K7
10K
4K7
10K
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
1K0
330R
220P
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
11 IC4 selects TV is
able control signal
a resultant video o
is fed back to the is
The other signal 'W
17 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supple
selected SCAR
8 & 29 to the stere
5.
of two audio amp
y be fitted.
432MH2. TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
I audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
~~~~~
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 R48 4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
1K0
330R
220R
1K0
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'W
11 as an output. SC
400, pin 12. In this
gnals on SCART2
is 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 f
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supp
e selected SCAR
8 & 29 to the stere
5.
of two audio amp
y be fitted.
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
(ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
I2 stereo audio input
I audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
00000 #
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
1K0
18R
1R or 10R
1R or 10R
1R or 10R
1R or 10R
4K7
4K7
4K7
4K7
10K
1K0
2R2
4K7
2K2
1K0
1K0
330R
220R
1K0
2K2
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pins
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
0. IC4 selects TV able control signal
a resultant video o
is fed back to the i
The other signal 'W
11 as an output. SC
400, pin 12. In this
gnals on SCART2
ied by IC1. SCAR
is 52 & 53. SCART
36 & 37, SCART2
5 33 & 34. TR12 f
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supp
e selected SCAR
8 & 29 to the stere
s.
of two audio amp
y be fitted.
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
00000 #################################
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 4K7
10K
4K7
10K
150R
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
18R
18
18
18
18
18
18
18
18
18
18
18
18
18
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pins
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
10 IC4 selects TV is
able control signal
a resultant video o
is fed back to the is
The other signal 'W
17 as an output. SC
400, pin 12. In this
gnals on SCART2
a day IC1. SCAR
18 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supple
a selected SCAR
8 & 29 to the stered
s.
of two audio amply
y be fitted.
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
~~~~~
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 4K7
10K
4K7
10K
150R
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
18
18
18
18
18
18
18
18
18
18
18
18
18
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
10 IC4 selects TV is
able control signal
a resultant video o
is fed back to the is
The other signal 'W
17 as an output. SC
400, pin 12. In this
gnals on SCART2
a day IC1. SCAR
18 52 & 53. SCART
36 & 37, SCART2
33 & 34. TR12 to
CTR out 1 and CT
case of tuning and
a TV is switch off a
in the power supple
a selected SCAR
8 & 29 to the stered
s.
of two audio amply
y be fitted.
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R30 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 4K7
10K
4K7
10K
150R
150R
150R
150R
75R
4K7
4K7
4K7
4K7
2K2
1K0
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
1R or 10R
18R
18
18
18
18
18
18
18
18
18
18
18
18
18
75990-300.12
75990-300.12
generated on pir
buffered by TR7
IC4 is via TR20
the SCART2 en
Scart menu. The
is split, one part
as 'SAT VID O'.
pin 19 of SCART
also routed to IC
can record the si
switching is rout
signals go to pin
signals go to pin
come from pins
come from pins
muting switches
Control signals
muting as in the
outputs when th
are still present
TV stereo or th
out of IC1 pins 2
internal speaker
Note that either
or TDA2615 ma
10 to IC4 via TR8 a
00 to IC4 via TR8 a
10 IC4 selects TV is
able control signal
a resultant video o
is fed back to the is
The other signal 'V
T1 as an output. SC
400, pin 12. In this
gnals on SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
and SCART2
Aszimitz: TV video is
and SCART2 video to
or SCART2 by using
I from IC500 and the
utput signal from IC4
input of IC400, pin 11
/ID PERI O' is sent to
CART1 video input is
way, SCART1 (VCR)
(Satellite). The audio
I1 stereo audio input
2 stereo audio input
1 audio output signals
audio output signals
audio output signals
to TR13 are SCART
R out 2 control audio
I TR9 mutes all audio
and residual voltages
ly capacitors.
T audio inputs come
to audio amplifier and
olifier IC's TDA2007A
Page 28
4
REMO DTE CONTROLS TRC1 & TRC2
Φ Switches the receiver on and off. (Standby)
1-0 Direct channel selection and direct entry
of adjusatble settings. Turns television on
from Standby.
P+ Selects channel above current channel.
Increases adjustable menu settings.
Ρ- Selects channel below current channel.
Decreases adjustable menu settings.
VOL+
VOL-
Increases Volume
Decreases Volume
i Displays selected channel number
Accesses hidden information
MENU Accesses Menu an a
STORE Stores channels in tuning mode
TUNE Selects tuning mode
X Mutes sound
HOLD Holds a particular page in the Teletext mode Fliding screws
EXP Changes height of characters in the Teletext mode
TEXT/MIX Selects teletext / selects mixed mode (text on picture)
TV Returns to normal viewing mode
0/AV Selects auxiliary mode SCART connector
INDEX Selects Index pages in Text mode Serial No.
) Fastext buttons Fixing screws
LANG 1/2 Switches between FM and NICAM
STEREO Switches between Stereo and Stereo Wide
AUDIO Accesses Audio selections

loff ewitch

4

Page 29

Page 30

Page 31

TP801, IC800 pin 37.

TP802. IC800 pin 27. R-Y signal to and from the Delay Line IC801. 1V/div and 20us/div

TP803, IC800 pin 36,

TP804 - IC800 pin 26. B-Y signal to and from the Delay Line IC801. Note that the signal on TP803 is not symetrical on alternate lines. 1V/div and 20us/div.

TP805. IC800 pin 31. Sandcastle waveform with line alternating with PAL ident added.

TP806. IC800 pin 20. Auto grey scale feedback signal.

Y/C Processing

IC800 is a complete Y/C processing circuit. All controls are software adjusted and stored in registers. Consumer adjustment is limited to the front fascia controls. Raster correction controls are only accessible in factory set up and trouble shooting mode set by the system microcontroller, also the consumer controls are accessed in the mode.

Composite video is fed in to pin 2 (VIDEO IN 2). Separation of luminance and chrominance is carried out internally by the sampled data method using clocks generated by the external crystal. This method is used for all decoding processes in the IC. The sample clock is phase locked to the subcarrier for correct colour ident. Delay Line.

Sampled chroma signals, designated R-Y and B-Y, are fed to a digital CCD delay line IC with an accurate delay of 1 picture line. CCD delay line clock is derived from the 17.7Mhz crystal XT800 and is phase locked to the colour signal. Two outputs of separated R-Y and B-Y are from pins 7 and 10 respectively.

RGB matrix and sync separator.

After passing through the delay line the colour component signals are matrixed with luminance to produce RGB outputs. Luminance delay is within IC800. Composite sync is stripped of the incoming video in a sync separator circuit within IC800, from these pulses the sandcastle waveform is constructed. Line syncs are fed to the line timebase circuits. Line time base is generated by a master clock oscillator which is phased locked to line syncs. Two phase locked loops are used with differing characteristics for broadcast signals and VCR replays. All controls for the line time base generator are integrated into IC800 and are accessed via the I2C bus under microcontrol from IC500. These are set up in the factory by test software.

Page 32

Vertical timebase is also integrated into IC800. A divider counter is controlled by the field sync pulses separated from the video signal. This counter produces pulses that generate the vertical ramp. As the counter is driven by a clock then in the event of no signal it is able to count 625 in two stages to artificially produce line and field drive signals, this is done to avoid tube damage in the case of no vertical drive ramp.

RGB Drivers

RGB drive signals are fed out on pins 17,18 and 19 of IC800. They are buffered to the tube base by transistors TR801, TR803 & TR803. External RGB signals and fast blanking come into IC800 on pins 21-24 as a nominal level of 700mV. Standard RGB video signals come from the Scart connector and are mixed with switching data from the main microcontroller IC500 for On Screen Display and/or the Teletext drive circuits. The fast blanking signal cuts off the analogue RGB and composite video signals in order to insert or key in the OSD or Teletext. It is sent by both the microcontroller and Teletext IC's.

Beam Limiter

The sensing of the beam current is performed at the bottom end of the EHT transformer, pin 7. 15V positive bias is fed via R350 and is reduced by the negative voltage generated by the G2 and Focus return current which is proportional to the TV tube beam current. Beam current sensing is done on IC800 pin 9, and is measured against an internal reference. When the sensing level exceeds this reference the gain of the RGB output stages is reduced, thereby reducing the beam current.

LUMINANCE/CHROMINANCE STAGE (800)

Ref Ι B Description Part Number
C801 H5 100nF 63V
C802 15 680pF_63V
C803 H5 4n7 63V
C804 H5 100nF 63V
C805 J8 100pF SMD 8672-159-134
C806 H9 4n7 SMD 8672-167-758
C807 G9 10nF SMD 8672-167-758
C808 G5 33uF 16V
C809 G9 100nF SMD 8672-167-270
C810 G5 82nF 63V
C811 G5 4u7 63V
C812 H8 10nF SMD 8672-167-758
C813 F4 100nF 63V
C814 G4 220uF 6V3
C815 G9 47nF SMD 8672-167-279
C816 J9 100nF SMD 8672-167-270
C817 J 9 100nF SMD 8672-167-270
C818 J9 100nF SMD 8672-167-270
C819 G11 22pF SMD 8672-160-126
C820 G9 47nF SMD 8672-167-279
C821 G10 3n9 SMD 8672-167-253
C822 G10 100nF SMD 8672-167-270
C823 H4 100nF 63V
C824 H10 100nF SMD 8672-167-270
C825 H10 100nF SMD 8672-167-270
C826 H4 4u7 50∨
C827 G11 120pF SMD 8672-160-135
C828 18 22nF SMD 8672-167- 262
C830 G11 100nF SMD 8672-167-270
C831
C832
C833
C834
C835
C836
C840
C840
C841
C850
G3
G4
H4
H3
H6
G11
G11
G9
G8
1uF 50V
1uF 50V
100nF 63V
10nF SMD
33uF 16V
10nF SMD
100nF SMD
39pF SMD
470nF 50V
8672-167-758
8672-167-758
8672-167-270
8672-160-129
D801
D802
D804
IC800
IC801
G5
G3
H8
J9
H8
BAS16 SOT23
BAS16 SOT23
BAS16 SOT23
MC44007
MC44140
8309-210-016
8309-210-016
8309-210-016
75990-200.58
75990-200.59
R800
R801
R802
R803
R804
R805
R806
R807
R808
R809
R810
R811
R812
R813
R812
R813
R815
R816
R817
R819
R820
R821
R822
R823
R824
R825
R826
R827
R828
R826
R827
R828
R827
R828
R829
R820
R821
R825
R826
R827
R828
R827
R828
R826
R827
R828
R827
R828
R827
R828
R827
R828
R826
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R826
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R827
R828
R828
H2
G4
G8
18
18
19
18
19
18
19
19
19
19
19
19
19
19
19
19
1KO SMD
100R SMD
100R SMD
100R SMD
220R SMD
220R SMD
680R SMD
220R SMD
680R SMD
220R SMD
33K SMD
220R SMD
56K SMD
100K SMD
100K SMD
100K SMD
100R SMD
100R SMD
100R SMD
100R SMD
100R SMD
100R SMD
100R SMD
11X SMD
4K7 SMD
1K SMD
4K7 SMD
1K SMD
1K SMD
1K0 SMD
1K0 SMD
47K SMD
1K0 SMD
47R 1/2W
1R0 1/4W
270K SMD
2M2 SMD
1K2 SMD
1K2 SMD
8706-100-073
8706-100-049
8706-100-049
8706-100-049
8706-100-057
8706-100-057
8706-100-057
8706-100-057
8706-100-057
8706-100-057
8706-100-108
8706-100-15
8706-100-121
8706-100-149
8706-100-149
8706-100-149
8706-100-149
8706-100-049
8706-100-113
8706-100-089
8706-100-188
8706-100-108
8706-100-131
8706-100-131
8706-100-153
8706-100-055
8706-100-055
8706-100-055
TR800
TR801
TR802
TR803
XT800
G4 H8
|8
|9
J9
BC847B SOT23
BC847 SOT23
BC847 SOT23
BC847 SOT23
QUARTZ 17.734M
8301-004-847
75990-100.10
75990-100.10
75990-100.10
hz 75990-200.60
Page 33

Page 34

Page 35

Y/C PROCESSING (800)

Page 36

GREEN output, R909. 50V/div and 20us/div

Л Л רק M 7 7 Л N ſ
H

BLUE output, R914. 50V/div and 20us/div

RED output, R904. 50V/div and 20us/div

Page 37

Cabinet parts list 14" 20" 21"
1 Mains Pushbutton 75990-200.12 75990-200.12 75990-200.09
2 Infra red Window 75990-200.03 75990-200.10 75990-200.10
3 Pushbutton Assly 75990-200.04 75990-200.11 75990-200.11
4 Speaker 75990-200.05 75990-200.05 75990-200.05
5 Emblem 'GRUNDIG' 75990-200.85 75990-200.85 75990-200.85
6 Front Cover 75990-200.00 75990-300.54 75990-200.02
7 Rear Cover 75990-200.01 75990-200.13 75990-200.13
8 Antenna Loop 73771-140.00
9 Mains Cable - 75990-300.52 75990-300.53
10 Cabinet Screws (4.5x22) - -
11 Remote Control TRC1 75990-200.14 75990-200.14 75990-200.14
Remote Control TRC2 75990-100.53 75990-100.53 75990-100.53
14 User Manual 75990-200.86 75990-200.87
15 Picture Tube See P.24 See P.24
16 NICAM Decoder & SCART2

Page 38

SEE OPTIONS TABLE P24

Page 39

TUBE BASE (900)

Page 40
Tube Type
Circuit Ref
14" Chunghwa
370 KRB 22 SPYB
75990-200.93
14" Farmex
A 33 LPE 02X01
75990-200.94
14" ESC
PCT 3614 NHS
75990-200.95
14" Orion
A 34 JLL 90X23
75990-200.96
14" Samtel
A 34 JAE 10X
75990-200.97
20" C
510 UF
C300 7n5 7n5 7n5 7n5 7n5 -
C301 430nF 430nF 330nF 430nF 430nF 4
L300 Not fitted Not fitted Not fitted Not fitted Not fitted 3
L301 Not fitted Not fitted Not fitted Not fitted 47uH No
R300 Link Link Link Link Link 8
R301 Link Link Link Link 820R
R315 Not fitted Not fitted Not fitted Not fitted Not fitted -
R316 10R 10R 10R 10R 10R No
R915 1R5 0R82 0R68 2R2 2R2 0
R350 18K 18K 18K 18K 18K
T100 75990-300.21 75990-300.22 75990-300.22 75990-300.21 75990-300.22 7599
T300 75990-300.17 75990-300.17 75990-300.18 7599
TR900/1/2 BF422 BF422 BF422 BF422 8F422 в
CN900 75990-300.24 75990-300.23 75990-300.23 75990-300.24 75990-300.24 7599
R211 1R 1R 1R 1R 1R
C206 2200uF 2200uF 2200uF 2200uF 2200uF 22
R100 PTC mono PTC mono PTC mono PTC mono PTC mono PT
8+ 110V 1
Circuit Ref Euro Text
Fast Text
Uni Text
Simple Text
IC650 CF70200 CF70095ANF
LNK651 N/F Link
LNK652 Link N/F
LNK653 N/F Link
LNK655 Link N/F
LNK656 Link N/F
LNK657 Link N/F
LNK658 Link N/F
C661 10nF 270pF
C662 Link 10pF
C663 N/F 82pF
C664 N/F 2n2
C665 N/F 100nF
D651 N/F BB731
L651 N/F Coil
R654 Link 33K
R655 10K 100K
R657 N/F 33K
R658 N/F 8K2
R663 N/F 10 K
R678 47K N/F
TR650-653
+
Component
N/F As per circuit
Circuit R
SAW600/6
D400
CT401
TUN60
CF400
IC800
SAW50
Page 41
jhwa
SPYB
0.93
14" Farmex
A 33 LPE 02X01
75990-200.94
14" ESC
PCT 3614 NHS
75990-200.95
14" Orion
A 34 JLL 90X23
75990-200.96
14" Samtel
A 34 JAE 10X
75990-200.97
20" Chunghwa
510 UFB 22 TC05
20* Samsung
A 48 ECR 11X60
20" Goldstar
A 48 OAD 220X09
21" Chunghwa
A 51 AEZ 90X
75990-200.98
21" Orion
A 51 JSW 90X03
75990-200.99
21" Samsung
A 51 EER 11X38
75990-200.90
7n5 7n5 7n5 7n5 9n5 9n5 8n2 8n6 7n9 8n6
430nF 330nF 430nF 430nF 430nF 470nF 390nF 390nF 390nF 390nF
ed Not fitted Not fitted Not fitted Not fitted 35uH 65uH TBA 65uH 65uH 65uH
ed Not fitted Not fitted Not fitted 47uH Not fitted Not fitted Not fitted Not fitted Not fitted Not fitted
Link Link Link Link 820R 820R 820R 820R 820R 820R
- Link Link Link 820R Link Link Link Link Link Link
d Not fitted Not fitted Not fitted Not fitted 10R 10R 10R 10R 10R 10R
10R 10R 10R 10R Not fitted Not fitted Not fitted Not fitted Not fitted Not fitted
0R82 0R68 2R2 2R2 0R82 0R82 0R82 0R68 2R2 1R
18K 18K 18K 18K 12K 12K 12K 12K 12K 12K
D.21 75990-300.22 75990-300.22 75990-300.21 75990-300.22 75990-300.21 75990-300.21 75990-300.21 75990-300.21 75990-300.22 75990-300.21
D.17 75990-300.17 75990-300.18 75990-300.17 75990-300.17 75990-300.17 75990-300.17 75990-300.18 75990-300.17
! BF422 BF422 BF422 BF422 BF871 BF871 BF871 BF871 BF871 BF871
D.24 75990-300.23 75990-300.23 75990-300.24 75990-300.24 75990-300.76 75990-300.76 75990-300.76 75990-300.76 75990-300.75 75990-300.76
1R 1R 1R 1 R 1R 1R 1R 1R 1R 1R
F 2200uF 2200uF 2200uF 2200uF 2200uF 2200uF 1000uF 1000uF 1000uF 1000uF
no PTC mono PTC mono PTC mono PTC mono PTC duo PTC duo PTC duo PTC duo PTC duo PTC duo
113V 115V 110V 110V 100.6V 113.5V
Circuit Ref Euro Text
Fast Text
Uni Text
Simple Text
IC650 CF70200 CF70095ANF
LNK651 N/F Link
LNK652 Link N/F
LNK653 N/F Link
LNK655 Link N/F
LNK656 Link N/F
LNK657 Link N/F
LNK658 Link N/F
C661 10nF 270pF
C662 Link 10 pF
C663 N/F 82pF
C664 N/F 2n2
C665 N/F 100nF
D651 N/F BB731
L651 N/F Coil
R654 Link 33K
R655 10K 100K
R657 N/F 33K
R658 N/F 8K2
R663 N/F 10K
R678 47K N/F
R650-653
+
N/F As per circuit
Circuit Ref Mono/PAL/BG Mono/PAL I Stereo PAL I Mono/PALBG/SECC
SAW600/601 OFWG1951 OFWJ1951M J3252 OFWK2935M
D400 Link Link Not fitted BA282
CT401 TPS5.5MB TPS6.0MB Not fitted TPS5.5MB
TUN600 SALCOMP 1490R SALCOMP 1590R SALCOMP 1590R SALCOMP 1490R
CF400 SFE5.5MB SFE6.0MB Not fitted SFE6.5MB
IC800 MC44007 MC44007 MC44007 MC44002
SAW500 Not fitted Not fitted Not fitted Not fitted
Page 42
hunghwa
B 22 TC05
20" Samsung
A 48 ECR 11X60
20" Goldstar
A 48 OAD 220X09
21" Chunghwa
A 51 AEZ 90X
75990-200.98
21" Orion
A 51 JSW 90X03
75990-200.99
21" Samsung
A 51 EER 11X38
75990-200.90
21" Toshiba
A 51 KST 40X01M
75990-200.91
21" Huafei
A 51 ECV 51X01
75990-200.92
Ən5 9n5 8n2 8n6 7n9 8n6 7n9 7n2
30nF 470nF 390nF 390nF 390nF 390nF 390nF 320nF
5uH 65uH ТВА 65uH 65uH 65uH 80uH 65uH
t fitted Not fitted Not fitted Not fitted Not fitted Not fitted Not fitted 150uH
20R 820R 820R 820R 820R 820R 820R 820R
ink Link Link Link Link Link Link 820R
ICR 10R 10R 10R 10R 10R 10R 10R
t fitted Not fitted Not fitted Not fitted Not fitted Not fitted Not fitted Not fitted
R82 0R82 0R82 0R68 2R2 1R 2R7 2R7
12K 12K 12K 12K 12K 12K 12K 12K
2-300.21 75990-300.21 75990-300.21 75990-300.21 75990-300.22 75990-300.21 75990-300.22 75990-300.21
3-300.17 75990-300.17 75990-300.17 75990-300.17 75990-300.18 75990-300.17 75990-300.18 75990-300.17
F871 BF871 BF871 BF871 8F871 BF871 BF871 BF871
-300.76 75990-300.76 75990-300.76 75990-300.76 75990-300.75 75990-300.76 75990-300.75 75990-300.75
1R 1R 1R 1R 1R 1R 1R 1R
00uF 2200uF 1000uF 1000uF 1000uF 1000uF 1000uF 1000uF
C duo PTC duo PTC duo PTC duo PTC duo PTC duo PTC due PTC duo
13V 115V 110V 110V 100.6V 113.5V 104V 112.5V
h Mono/PAL/BG Mono/PAL I Stereo PAL I Mono/PALBG/SECDK
01 OFWG1951 OFWJ1951M J3252 OFWK2955M
Link Link Not fitted BA282
TPS5.5MB TPS6.0MB Not fitted TPS5.5MB
SALCOMP 1490R SALCOMP 1590R SALCOMP 1590R SALCOMP 1490R
SFE5.5MB SFE6.0MB Not fitted SFE6.5MB
MC44007 MC44007 MC44007 MC44002
) Not fitted Not fitted Not fitted Not fitted
Page 43

.

Page 44

Page 45

Layout Diagrams

Page 46
Service Mode

In this mode the alignment of; Geoemetry, Peak White Level and AGC can be carried out. Either the remote control or TV front controls can be used.

To enter the service mode, depress and hold the channel change buttons (P+ & P-) on the front as the TV is switched on and hold until a picture appears. The service menu will be at the bottom of the screen G L V H R G B A . To choose a function select 'menu' on the remote control or simutaneously depress (V+ & V-) on the front of the TV, but only briefly. Adjustment of the selected function is by depressing P+ or P-. Choosing another function will automatically store the adjustment of the previous function. To return to normal TV mode select TV on the remote control or (V+ & V-) on the TV.

Alignment input Adjustment
Supply Voltage TV signal Adjust VR100 for 110V supply voltage.
G2 voltage (G) Crosshatch
or TV picture.
Adjust between the Red and Green squares.
If the G2 is too high - Red square appears on screen.
If the G2 is too low - A Green square appears.
Geometry (LVH) Crosshatch L - Vertical linearity
V - Height
H - Horiziontal position
Peak White Level (RGB) Colour Bars Adjust for minimum colouration of white bar.
AGC (A) TV signal Signal level 70dbuV (3mV). Adjust for voltage on tuner pin 1 between 5.4 and 5.6V
Vision Demodulator IF colour bar I F signal 39.5Mhz. Adjust L401 for 5.25V on IC400
pin 2.
Teletext Clock TV text signal Adjust L651 for 2.5V on IC650 pin 28.
SAT 6 Mhz IC600, pin12 Adjust L604 to minimum video signal
Tuning

Press the 'Tune' key on the remote control to bring up the tuning graphic. Press and hold the 'P+' key for more than 1 second to start the search tuning. When a channel is found the 'S' graphic will flash. Either select 'P+' to continue tuning or 'Store' to retain the channel. By pressing the 'store' key the the programme number will flash, key in the programme number that the channel is to be stored in.

Fine Tuning

Press the 'Tune' button and then the 'P+' key briefly to bring up the fine tuning graphic, an X will appear after the channel number. Use the 'P+' & 'P-' keys to fine tune and then 'store'. Note: By storing the fine tuning the AFC is disabled and tuning drift may occur.

Scart Menu

By selecting the 'tune' key on programme 0/AV the Scart options graphic will appear and the external inputs can be selected. In the VCR mode only, the line timebase time constant is short.

Page 47

Page 48

NICAM Board Top Layout

Page 49

Tube Base Panel Layout

Page 50

Ň

Page 51

Page 52

Page 53

Page 54

Page 55

Page 56
71 R53 1K0 AUDIO STAGE (550 ))
) 71 R54 1K0 Ref Ι B Description Part Number
0.71 R55 4K7 C552 G12 10nF SMD 8672-167-758
R56 6K8 C553 G2 470uF 16V
10 R59 330R C554 G2 33uF 16V
10 1.00 00011 C555 G12 10nF SMD 8672-167-758
).10
).10
TR1 BC847 75990-100 10 C556 H12 100nF SMD 8672-167-270
TR2 BC857 8301-000-857 C557 G11 100nF SMD 8672-167-270
17 TR3 BC847 C559 G12 220nF SMD 75990-200.73
TR4 BC327 75990-500 12
0.00 TRS BC847 75990-100 10 IC550 G2 TDA 2822M 8305-332-820
0.90
045
TRE BC847 75990-100.10
040 TR7 BC847 75990-100.10 L550 G1 10uH 75990-200.74
1.37
04E
TRS BC847 75990-100.10 L551 G1 10uH 75990-200.74
040 TRO BC847 75990-100.10
045 TP10 BC847 75990,100,10 R550 G1 4R7 1/4W
TD11 BC847 75990-100.10 R553 H12 10K SMD 8706-100-097
BC847 75990-100.10 R555 H12 100K SMD 8706-100.121
TP13 BC847 75990-100.10 R556 F4 47K 1/4W
TP1A BC847 75000-100.10 R557 H12 100R SMD 8706-100.049
TP20 BC847 75000 100.10
11740 75330-100.10 TR550 H12 BC847 SOT23 75990-100.10
NICAM version

There are two signal inputs to this circuit from the tuner/ IF stages. TV video from the IF demodulator and the 6 0/6 5Mhz EM and NICAM intercarriers IC1 an ITT MSP3410 decodes standard FM sound and NICAM as well as carrying out the functions of Volume and tone controls and spatial sounds from the I2C bus A clock is generated on pins 62 and 63 at 18.432MHz. TV video is buffered by TR700 to IC4 via TR8 and SCART2 video to IC4 is via TR20, IC4 selects TV or SCART2 by using the SCART2 enable control signal from IC500 and the Scart menu. The resultant video output signal from IC4 is split, one part is fed back to the input of IC400, pin 11 as 'SAT VID O'. The other signal 'VID PERI O' is sent to pin 19 of SCART1 as an output. SCART1 video input is also routed to IC400, pin 12. In this way, SCART1 (VCR) can record the signals on SCART2 (Satellite). The audio switching is routed by IC1. SCART1 stereo audio input signals go to pins 52 & 53. SCART2 stereo audio input signals go to pins 49 & 50. SCART1 audio output signals come from pins 36 & 37. SCART2 audio output signals come from pins 33 & 34 TR12 to TR13 are SCART muting switches.

0.12 m

Control signals CTR out 1 and CTR out 2 control audio muting as in the case of tuning and TR9 mutes all audio outputs when the TV is switch off and residual voltages are still present in the power supply capacitors.

TV stereo or the selected SCART audio inputs come out of IC1 pins 28 & 29 to the stereo audio amplifier and internal speakers.

Note that either of two audio amplifier IC's TDA2007A or TDA2615 may be fitted.

SCA RT CONNECTOR (70 )0)
Ref
2700
I
B1
B Description
33uF 16V
Part Number
2701 A13 4n7 SMD 8672-167-254
2702 B12 4n7 SMD 8672-167-254
2703 B12 470pF SMD 75990-200.19
704 B12 470pF SMD 75990-200.19
2705 B2 33uF 16V
8700 B12 -
390R SMD
8706-100-063
701 B12 390R SMD 8706-100-063
702 B12 390R SMD 8706-100-063
R703 A13 470R SMD 8706-100-065
8704 B12 470R SMD 8706-100-065
R705 В3 75R 1/4W
R706 B3 75R 1/4W
R707 B3 75R 1/4W
R708 В3 75R 1/4W
2709 B3 75R 1/4W
2710 B12 10K SMD 8706-100-097
712 B12 10K SMD 8706-100-097
713 B12 10K SMD 8706-100-097
R714 B12 10K SMD 8706-100-097
2715 C3 75R 1/4W
2716 C11 1K0 SMD 8706-100-073
R717 C11 0R SMD 75988-011.49
718 C11 10K SMD 8706-100-097
R700 C11 BC847 SOT23 75990-100.10
PL503 A2/3 SCART CONN. 75990-200.75
Page 57

Page 58

Video Output Stages

Video output transistors TR900, TR901 & TR902 are drive directly from buffer transistors on the output drive signals of IC800 in the Y/C processing circuit. The level of the signal applied to the tube base is set in a register within IC800. There are also two registers for the signal parameters within IC800 for contrast (Y & C) and brightness (Black level) Emitter capacitors C900-C902 are present to provide extra gain at high frequencies to overcome loss by tube electrode capacitances

CN90

Transistors TR903, TR904 & TR905 are dark/light current sense transistors and combine to a single path for current sensing in auto grey scale mode.

Auto Grev Scale.

When a video output transistor is driven on by a peak white the voltage drop causes the sensing transistors to conduct producing a collector current proportional to the beam current. When the video output transistor is turned of by a black level then the current from the sensing transistors reduces to a lower level. This gives two current values on the Dark-I line representing residual dark tube current and maximum beam current.

TUBE BASE PANEL (90 0)
Ref Description Part Number
C900 680pF SMD 8672-159-244
C901 680pF SMD 8672-159-244
C902 680pF SMD 8672-159-244
C903 1nF SMD 8672-159-146
C904 1nF SMD 8672-159-146
C905 1nF SMD 8672-159-146
C906 2n2 2KV 75990-200 76
C907 10uE 250V 75990-200 43
0007 10000-200.40
D900 BAS16 SOT23 8309-210-016
D901 BAS16 SOT23 8309-210-016
D902 BAS16 SOT23 8309-210-016
R900 15K 1W
R901 100R SMD 8706-100-049
R903 330R SMD 8706-100-061
R904 1K5 1/2W
R905 15K 1W
R906 100R SMD 8706-100-049
R908 330R SMD 8706-100-061
R909 1K5 1/2W
R910 15K 1W
R911 100R SMD 8706-100-049
R913 330R SMD 8706-100-061
R914 1K5 1/2W
R915 0R68 1W 75990-300.13
0R82 1W 75990-300.32
1R0 1W 75990-300.15
1R5 1W 75990-300.31
2R2 1W 75990-300-14
2R7 1W 75990-300.16
R916 1K5 1/2W
R917 1K5 1/2W
R920 100R SMD 8706-100-049
TR900 BF422 TO92 75990-300.29
BF871 75990-200.79
TR901 BF422 TO92 75990-300.29
BF871 75990-200.79
TR902 BF422 TO92 75990-300.29
BF871 75990-200.79
TR903 BF423 TO92 75990-200.80
TR904 BF423 TO92 75990-200.80
TR905 BF423 TO92 75990-200.80
SPIRAL SPRING
DEGAUS COIL
DAG BRAID LEAD
SCREW 5.15 x 26
) Tube Base

See P 24

Page 59

Page 60

Page 61

Loading...