Polaroid series, Service Manual

Page: 29 / 68

UT01
I044
I010
I019
I033
I024
I035
I018
I006
I031
I001
I038
I03
I032
I020
I009
(2) AV Signal
Refer to the page 8 in circuit diagram of PWB-0812.
V30DXXX / V27DXXX can process 4 different Video signals
，
including Composite
Video (CVBS)
、
Separate Video (S-Video ) and Component Video (YUV). Component
Video also includes two types Y Cb/Cr and Y Pb/Pr, and I018,I031 SAA7117 is 16
channels analog input. There are 4 A/D in it’s I/O port, So it can match this model.
Examples for different of input source signals are listed one by one as follow. (please
refer to the circuit diagram)
：
A. TV
：
i. TV signals enter from ANT to Pin#1 of UT01 FQ1236 MK3 Tuner. Pin
#14 output Audio MPX signal, while Pin#12 output TV (CVBS) Video signal.
ii. Audio MPX signal does MTS demodulation from I044 (I044 MSP3440G).
It can output Audio signal including Mono
、
Stereo
、
Sap and so on. Then
through I010 (Audio Power Amp) to Speaker.
iii. After the Video signal to the V-Chip circuit (I025 NJM2244
、
I033
Z86129
、
I030 74HC126) to modulate it, output to I031 SAA7117 Video
Decoder (Main) or I018 SAA7117 Video Decoder (Sub) circuit to do
modulation and Video source exchanges for CVBS signal type. Then CVBS
signal changes to the ITU-656 type by I031 or I018 and outputs to I019 Scaler
to process. 8 Bit belongs to Data parts, and H sync, V sync, CLK directly
connect to Pin#162
、
163
、
164 of Scaler. Then R
、
G
、
B signal respectively output
six bits to panel.
10W +
10W
Speaker
Headphone
TV – Tuner
(Philips)
FQ1236 MK3
4:1
MTS & Audio
Processor
MSP3440G
Audio Amp.
TFA9843)
CV Audio
SV/AV Audio
PC Audio
ANT
Audio
SIF
Video
Video Decoder
SAA7117
De-Interlace
SiI504C
ADC
AD9883A
Scaler
TP6761
LCD
ADC
AD9883A
Video Decoder
SAA7117
8 bit
CV
SV
AV
Interlaced
Progressive
24 bit
24 bit
3D Comb filter
TC90A65F
(or UPD 64083)
V-Chip
Z8612912
Port
V( Sub )
Port
B(
Main )
PI5V330
P15V3
TV/AV
Interlaced
Sync .
VGA
PC / Component Video
RAM HY57V64
RAM
HY57V16
Interface
T
HC63
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