6-7
CIRCUIT DESCRIPTION
IC5008 (NTSC/PAL
; TA1222)
IC5012 (TA8814
; CTI)
IC5017
(UPD4066 ; SW)
Signal Y input
Pin 15
DL5001
(DELAY LINE)
SIGMAL Y input
Pin 53
The C signal is processed for system’s discrimination. If the signal is PAL or NTSC, it is processed for APC,
ACC, carrier reproduction, and phase detection. It is turned into the R-Y/B-Y signal and once output from Pin
5 and Pin 6 of IC5008. It is then applied to Pins 12 and 13 of IC5010 (SECAM demodulation). It passes through
the internal switching circuit and is output from Pins 10 and 11, and it is then input in the next stage.
Regarding information about system’s discrimination, a control signal output is generated from Pin 3/7, in order
to control IC5010 (SECAM demodulation) and IC5009 (1H DELAY).
The amplified signal from IC5009 (1H DELAY) is output from Pins 29 and 30, and the input is applied to Pins 7
and 8 of IC5012.
IC5012 is in charge of profile correction for color signals. The output is generated from Pins 11 and 12, and is
returned to Pins 51 and 52 of IC5008.
Demodulation processing is effected in IC5008 for the generation of color-difference signal, and the signal is
sent to the RGB matrix circuit.
IC5008
(NTSC/PAL
; TA1222)
IC5010
(TA1229; SECAM)
IC5009
(TA872 ; 1H
DELAY)
IC5012
(TA8814; CTI)
Signal C input
R-Y/B-Y
Control
signal
Control signal
R-Y/B-Y
R-Y/B-Y
R-Y/B-Y
In the RGB matrix block, an analog RGB signal is generated at the RGB matrix circuit based on this color-
difference signal and the brightness signal. The output is obtainable from Pins 1, 3, 5 of the “VD” connector.
(2) SECAM demodulation
When a color signal is received from the SECAM system, a control signal from Pin 3 of IC5008 (PAL/NTSC) is
sent to IC5010 (SECAM demodulation).
In IC5010 (SECAM demodulation), the C signal input at Pin 24 is processed for band limitation at the bell filter.
After amplification at the limiter circuit, the signal is further processed for FM demodulation and de-emphasis,
and is changed over by the previous control signal. Since then, a color-difference signal output is generated
from Pin 10/Pin 11. When this signal is applied to Pins 26 and 27 of IC5009 (1H DELAY), complementary
operation is effected every hour. The output is generated from Pins 29 and 30, and applied to Pins 7 and 8 of
IC5012 (CTI).
IC5012 is in charge of profile correction for color signals. The output is generated from Pins 11 and 12, and is
returned to Pins 51 and 52 of IC5008. An analog RGB signal is generated at the RGB matrix circuit based on
this color-difference signal and the brightness signal. The output is obtainable from Pins 1, 3, 5 of the “VD”
connector.
Summary of Contents for PlasmaSync PX-42M2A
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Page 135: ...METHOD OF DISASSEMBLY 7 1 1 Diagonal view of the unit front ...
Page 136: ...2 Diagonal view of the unit rear 7 2 METHOD OF DISASSEMBLY ...
Page 148: ...MEMO ...
Page 152: ...MEMO ...
Page 155: ...B SAFETY BRACKET SASSY C CAP SASSY D SERVICE BAG SASSY PACKAGING 10 2 ...
Page 157: ...PACKAGING 10 4 G CUSHION CARTON BOX ...
Page 159: ...Outer box PACKAGING 10 6 ...
Page 162: ...2 PX42M2G ...
Page 163: ...12 1 CONNECTION DIAGRAMS ...
Page 164: ...13 1 BLOCK DIAGRAMS I O ANALOG ...
Page 165: ...13 2 BLOCK DIAGRAMS VIDEO AUDIO ...
Page 166: ...13 3 BLOCK DIAGRAMS POWER UNIT ...
Page 168: ...I O PWB PWC 4213B PARTS SIDE SOLDER SIDE SCHEMATIC DIAGRAMS 14 2 ...
Page 179: ...ANALOG PWB PWC 4214 PARTS SIDE SCHEMATIC DIAGRAMS 14 13 ...
Page 180: ...ANALOG PWB PWC 4214 SOLDER SIDE SCHEMATIC DIAGRAMS 14 14 ...
Page 184: ...VIDEO PWB PWC 4213A PART SIDE SCHEMATIC DIAGRAMS 14 18 ...
Page 185: ...VIDEO PWB PWC 4213A SOLDER SIDE SCHEMATIC DIAGRAMS 14 19 ...
Page 187: ...AUDIO PWB PWC 4216A PARTS SIDE SCHEMATIC DIAGRAMS 14 21 ...
Page 188: ...AUDIO PWB PWC 4216A SOLDER SIDE SCHEMATIC DIAGRAMS 14 22 ...
Page 190: ...SOUND I O PWB PWC 4216B PART SIDE SOLDER SIDE SCHEMATIC DIAGRAMS 14 24 ...
Page 196: ...MEMO ...
Page 197: ...PRINTED IN JAPAN 9806MI1250 01272002 PX 42M2A 01272003 PX 42M2G ...