Samsung PDP4294X/SMS, Руководство по обслуживанию

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Circuit Operation Description
Samsung Electronics 5-67
5-6-2 Inspections on Major ICs
1. SDA6001 (IC201) - MICOM
(1)
Check whether the proper power is supplied. (3.3v, 2.5V)
(2) Check whether the No.73 Reset pin’s output is High.
(3) Check I
2
C-BUS (I
2
C 1 : pins 98 and 99, I
2
C 2 : pins 100 and 101).
(4) Check whether the inputs/outputs between SDA6001 and MEMORY (IC203, IC205) are normal.
(5) Check whether the 6-MHz clock is connected to pins 108 and 109.
2. VPC3230 (IC101, IC401) Check when the input mode is set for TV, S-Video, Component1,
or 2 (SD-level)
(1) Check whether the proper power is supplied. (3.3V, 2.5V)
(2) Check whether the No.15 Reset pin’s output is High.
(3) Check I
2
C-BUS (pin 13 and 14).
(4) Check whether the output clock of LLC1 (pin 28) is 13.5MHz.
(5) Check the output on H SYNC (pin 56) andV SYNC (pin 57).
(6) Check the digital data outputs.
3. 81V04160 (IC402) Check the PIP operations when the input mode is for TV, S-Video,
Component1, or 2 (SD-level)
(1) Check whether the proper power is supplied. (3.3V)
(2) Check the digital data inputs and outputs.
4. FLI2200 (IC104) - DEINTERLACER Check when the input mode is for TV, S-Video,
Component 1, or 2 (SD-level)
(1) Check whether the proper power is supplied. (3.3V, 2.5V)
(2) Check wheter the No.48 Reset pin’s output is High.
(3) Check I
2
C-BUS (pins 47 and 48).
(4) Check whether the data inputs are normal.
VPC_CLK (pin 40) : 13.5 MHz, VPC_HSYNC (pin 3) : 15.75 KHz, VPC_VSYNC (pin 4) : 60Hz
(5) Check whether the data outputs are normal.
FLI_CLK (pin 117) : 27 MHz, FLI_HSYNC (pin 92) : 31.5 KHz, VPC_VSYNC (pin 91) : 60Hz
(6) Check whether the inputs and outputs between FLI2200 and MEMORY (IC105) are normal.
5. CXA2151Q (ANALOG BOARD IC101) - COMPONENT S/W & SYNC SEPARATION
Check when the input mode is for Component 1, or 2 (HD-level), and PC.
(1) Check whether the proper power is supplied. (5V)
(2) Check I
2
C-BUS (pins 56 and 57).
(3) Check whether the video input signals (pins 43, 48, 54) and the H (pin 30) and V (pin 31)
input signals are normal.
(4) Check whether the data outputs are normal.
Y, Pb, Pr (pins 25, 26, 27), COMP_H (pin 22) : 45 KHz (for 720p), COMP_V (pin 23) : 60Hz