Akai 25CT23FSR, Service Manual

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3. Chassis Description
General Description
CH-16 chassis is applied in PF2939S, which mainly uses Philips’ advanced UOC-ultimate one
chip TDA938X and I
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C-bus controlled IC. With combination of microcontroller and small signal
processor, the TDA938X features high-integrity, high-performance-to-price ratio and
high-reliability and advanced functions with fewer external components, which provide much
more convenience for manufacturing and technical service. In addition, TDA938X is good in
geometric distortion, more suitable for pure flat TV sets.
The following features are available in the chassis:
PAL/NTSC/SECAM reception
Real time clock/Child lock/Alarm/Electronic program guide
Auto identification of video signal source
Auto identification of color/audio system
AV input/output
CCD/V-CHIP
PAL/NTSC D-COMB
HI-FI stereo
Surround
The chassis mainly uses the following ICs and assemblies.
Table 6 Key ICs and Assemblies
Serial No. Position Type Function Description
1 N100 TDA9384 (CH05T1610) Microcontroller and small signal processor (UOC)
2 N200 AT24C08 EEPROM
3 N606 TDA9859 Audio processor
4 N400 TDA8350Q-N6 Vertical scan output stage circuit
5 NY01 TDA6107Q Video amplifier
6 N801 STR-F6454R Power module
7 N350 HEF4503BP Electronic switch circuit
8 N600 TDA7057Q Sound power amplifier
9 A100 TDQ-5B6-M Tuner
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