Toshiba 24W33B, Руководство по обслуживанию

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DO NOT CHANGE ANY MODULE UNLESS THE SET IS SWITCH OFF
The mains supply side of the switch mode power supply transformer is live.
Use an isolating transformer.
The receivers fulfill completely the safety requirements.
Safety precautions:
Servicing of this TV should only be carried out by a qualified person. Components marked with the warning symbol
on the circuit diagram are critical for safety and must only be replaced with an identical component.
- Power resistor and fusable resistors must be mounted in an identical manner to the original component.
TV Set switched off:
Make short-circuit between HV-CRT clip and CRT ground layer.
Short C809 before changing IC800 end IC801 or other components in primary side of SMPS part.
Measurements:
Voltage readings and oscilloscope traces are measured under following conditions.
Antenna signal’s level is 60dB at the color bar pattern from the TV pattern generator.(100% white,75% colour saturation)
Brightness, contrast, and color are adjusted for normal picture perfomance.
Mains supply, 220VAC, 50Hz.
PERI-TV SOCKET
SCART 1 PINING SCART 2 PINING
1 Audio right output 0.5Vrms / 1K 1 Audio right output 0.5Vrms / 1K
2 Audio right input 0.5Vrms / 10K 2 Audio right input 0.5Vrms / 10K
3 Audio left output 0.5Vrms / 1K 3 Audio left output 0.5Vrms / 1K
4 Ground AF 4 Ground AF
5 Ground Blue 5 Ground Blue
6 Audio left input 0.5Vrms / 10K 6 Audio left input 0.5Vrms / 10K
7 Blue input 0.7Vpp / 75ohm 7 Blue input
8 AV switching input 0-12VDC /10K 8 AV switching input 0-12VDC /10K
9 Ground Green 9 Ground Green
10 - 10 -
11 Green input 0.7Vpp / 75ohm 11 -
12 - 12 -
13 Ground Red 13 Ground Red
14 Ground Blanking 14 Ground Blanking
15 Red input 0.7Vpp / 75ohm 15 -
16 Blanking input 0-0.4VDC, 1-3VDC / 75ohm 16 -
17 Ground CVBS output 17 Ground CVBS output
18 Ground CVBS input 18 Ground CVBS input
19 CVBS output 1Vpp / 75ohm 19 CVBS output 1Vpp / 75ohm
20 CVBS input 1Vpp / 75ohm 20 CVBS input 1Vpp / 75ohm
21 Ground 21 Ground
1. INTRODUCTION
11AK37 is a 110° chassis capable of driving 25”, 28”, 29”, 33” 4:3 and 28”, 32” 16:9 tubes at the appropriate currents.
The chassis is capable of operating in PAL, SECAM and NTSC standards and multiple transmission standards as B/G,
D/K, I/I’, and L/L´. standards. The sound system is capable of giving 12 watts RMS output into a load of 8 ohms.
One page, 7 page SIMPLETEXT, TOPTEXT, FASTTEXT and US Closed Caption is also provided. The chassis is
equipped with a double-deck 42 pin scart connector for AV input/output, front-AV input, one back-AV output, one SVHS,
one headphone and one subwoofer.