Daewoo DTQ-14D4SSFM, Service Manual

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I. MICOM Outline.
1. Abstract.
This specification is 1-Tunner Mono Model for North America, CCD 1-Chip MICOM M37150.
It is developing software specification for tuning only NTSC system TV F/S.
2. H/W Outline.
1) ROM : 32K x 8bits.tsc
2) RAM : 1152 x 8bits.
3) OSD Function.
. Screen Display.
32 characters x 2 lines.
- Characters.
254 patterns programmable.
- Character display area
CC mode : 16 x 26 dots
- Chatacter color : 8 colors
- Attribute
CC mode : smooth italic, underline, flash, automatic solid space"
OSD mode : border
- Display position
Horizontal : 128 levels
Vertical : 512 levels
3. System Feature.
- The system for TV tuning is Frequency Synthesis type.
- Closed Caption’s function is built in IC.
- On Screen Display’s function is built in IC.
- Package. : 42 PIN SSOP.
- Tuner (Pre-scaler.) : I2C Bus. --- DT5-NF20F N
- Remote. : R-43A Series
- E2PROM. : 24C04(I2C Bus) ? Apply one byte Read/Write mode.
- 6-Local Key. : A/D Input Control.(Power, Ch Up/Down, Vol Up/Down, Menu)
- Option S/W : Port Input Option Check.
- IF/V/C/D IC :M61250(America, The only NTSC)"
4. Function.
1) C. C. D. function.
- A section of C. C. D. operates FCC based specification.
2) C. C. D. controlled function.
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IC DESCRIPTION