Tatung V32FCBB, Service Manual

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(4) MCU (Micro Controller) :
Refer to circuit diagrams sheet 13 and 11 of PWB-0713.
The microcontroller I34 (MX29LV800 or AM29LV800) is a flash type processor without extra
crystal for clock. The address signal A1~A19 of I34 (# 25~18
、
8~1
、
48
、
17and 16) are connected to
A1~A19 of I16 (Scalar : PW218), and data signal D0~D15 are also connect to D0~D15 of I16 (Scalar :
PW218).
(5) Scalar :
Refer to circuit diagrams sheet 5
、
11
、
12
、
14 of PWB-0713.
I28 ( Video Decorder : PW3200B) is used to decode the signals of PC
、
Component
、
Composite, and
then these digital signals are applied to the ports IN0R
、
IN0G
、
IN0B of I16A (Scalar: PW218).
I22 (Video Decorder: SAA7117) is used to decode signal of Composite only, and then these digital
signals are applied to the ports IN1R
、
IN1G
、
IN1B of I16B (Scalar: PW218).
Address and Data bus A1~A19
、
D0~D15 transfer data between I16C (Scalar: PW218 ) and I34
(MCU). (sheet 11)
I16C #AB13 is connected with Infrared Receiver via connector P13 #15.
The ports A1BLU
、
A1GRN
、
A1RED of I16D (Scalar: PW218) are applied to I36 (LVDS) for
Panel’s T-Con Board. (sheet 14)
(6) Panel interface :
Refer to circuit diagrams sheet 14 and 15 of PWB-0713.
The signals of panel interface are all applied from I36 (LVDS) and then fed into LCD Panel through
connector P15 and wire P015A.
Power +12V for LCD Panel is controlled by the signal DPWON from I36#32 and Q36
(MMTB3904).
The signals PWRON and VPWM from I16C #B10
、
W10(Scalar: PW218) are used to control the
Backlight On / Off state and Panel luminance through P16, CN2, CN3 .
The LVDS signals IN0
、
IN1
、
IN2
、
IN3 from I36 (LVDS) #37~38
、
41~42
、
45~46
、
47~48 are applied
to LCD Panel through P15 and P015A. These four pairs LVDS signals are used for panel image display.
10.2 Key
、
LED & IR Board
Refer to circuit diagrams sheet 13 of PWB-0713 and sheet 1 of PWB-0768 .
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