Service manual

Model no.:CT-21CBS5CPH.doc
version 1.0
21
2. CHASSIS DESCRIPTION
General Description
ETA-1 chassis is applied in SF21GA63 series.
By use of Toshiba V/C/D-MCU 2IN1 IC for TV small signal processing and bus
control, the chassis enables TV tuning, adjustment, control and picture correction,
featuring high-integration, high-performance-to-price ratio and high-reliability and
compact circuit with fewer external components. The chassis, widely used in small
and medium TVs, provides much more convenience for manufacturing and
technical service. It includes:
● 2IN1 IC TMPA8873PSANG-4VB6 for PAL/NTSC small signal processing
and bus control
● EEPROM AT24C16 for data memory
● LA78040 for vertical output power amplifying
● TFA9842AJ for audio power amplifying
● Thick-film IC STR-G5653 for power circuit adjustment and control
The following features are available in the chassis:
● Color systems: PAL, NTSC
● Sound systems: D/K B/G I M
● 236 programs preset
● AV stereo
● I
2C bus control
● Electronic program table
● Intelligent lock
● Biorhythm
● Calendar inquiry
The chassis mainly uses the following ICs and assemblies.
Table 5 - Key ICs and Assemblies