Panasonic Chassis / Euro-5VP Service Manual / Other ▷ View online
10
When power is input at normal state, the Sub MPU reads
the adjustment data for the 176 points in the present mode
from the E²PROM, and inputs the compensation point data
to the SRAM through the LSI after performing curve
interpolation. The compensating data is the data for the 16
horizontal points and the data for every other vertical
scanning line. Further, the adjustment point data for the 16
horizontal points can be adjusted between H:0000-3FFF
V:0000-3FFFF and the uncompensated data is H:2000
V:2000.
the adjustment data for the 176 points in the present mode
from the E²PROM, and inputs the compensation point data
to the SRAM through the LSI after performing curve
interpolation. The compensating data is the data for the 16
horizontal points and the data for every other vertical
scanning line. Further, the adjustment point data for the 16
horizontal points can be adjusted between H:0000-3FFF
V:0000-3FFFF and the uncompensated data is H:2000
V:2000.
The LSI reads the RGB horizontal and vertical
compensating data (6 channels in all: RH, RV, GH, GV,
BH, BV) from the SRAM in accordance with the CLOCK for
which the horizontal deflection pulse HP is multiplied 512
times by the PLL IC7104. The LSI then outputs the 6
channel 16 bit serial data to the Dynamic DAC(D/A) IC
(IC7111-7113) while calculating the linear interpolation for
the data for every other scan line.
Note: Euro5-VP chassis has SRAM and Dynamic
DAC(D/A) IC each 2 pcs.
compensating data (6 channels in all: RH, RV, GH, GV,
BH, BV) from the SRAM in accordance with the CLOCK for
which the horizontal deflection pulse HP is multiplied 512
times by the PLL IC7104. The LSI then outputs the 6
channel 16 bit serial data to the Dynamic DAC(D/A) IC
(IC7111-7113) while calculating the linear interpolation for
the data for every other scan line.
Note: Euro5-VP chassis has SRAM and Dynamic
DAC(D/A) IC each 2 pcs.
The 6 channel serial data and the LRCK , BCLK timing
pulse is then input to the Dynamic DAC D/A conversion
ICs. This is then converted to analog, and output in a
dynamic convergence wave pattern at a maximum of
3.3Vp-p .
pulse is then input to the Dynamic DAC D/A conversion
ICs. This is then converted to analog, and output in a
dynamic convergence wave pattern at a maximum of
3.3Vp-p .
For static convergence the SUB MPU reads data from the
E²PROM when the power is turned on. This data is then
sent to the STATIC CONVERGENCE IC by the 3 line bus,
and is output in an analog wave pattern at a maximum of
5Vp-p .
E²PROM when the power is turned on. This data is then
sent to the STATIC CONVERGENCE IC by the 3 line bus,
and is output in an analog wave pattern at a maximum of
5Vp-p .
The dynamic convergence wave and the static wave are
combined at the Active L.P.F., and added to the Amp
(IC7001-IC7002).
combined at the Active L.P.F., and added to the Amp
(IC7001-IC7002).
The wave is amplified to a maximum 20Vp-p wave, and in
the amplifier (IC7001-IC7002) on the CP-Print Board,
current is sent to the convergence coils for each of the
projection tubes, carrying out vertical and horizontal
compensation.
the amplifier (IC7001-IC7002) on the CP-Print Board,
current is sent to the convergence coils for each of the
projection tubes, carrying out vertical and horizontal
compensation.
The characters displayed in adjustment are output as the
RGB and YS signals from the OSDIC (IC7110) through the
4 line bus from the LSI, and combined with the test pattern
generated in the LSI. This is then output to the RGB MIX
(IC7701) and displayed on the projection tubes. The
oscillating elements connected to SUB MPU pin 57 and 59
are 4 MHz.
RGB and YS signals from the OSDIC (IC7110) through the
4 line bus from the LSI, and combined with the test pattern
generated in the LSI. This is then output to the RGB MIX
(IC7701) and displayed on the projection tubes. The
oscillating elements connected to SUB MPU pin 57 and 59
are 4 MHz.
11
.
The digital convergence circuit records, in the E²PROM, the
adjustment values of the correction current sent to the
convergence coil, for each screen, at 16 points horizontally
(14 points in the inner screen) and 11 points vertically (9
points in the inner screen) for a total of 176 points as the
crosshatch intersection point adjustment locations, as
vertical and horizontal adjustment data.
convergence coil, for each screen, at 16 points horizontally
(14 points in the inner screen) and 11 points vertically (9
points in the inner screen) for a total of 176 points as the
crosshatch intersection point adjustment locations, as
vertical and horizontal adjustment data.
The adjusted screen has 2 screens for both NTSC(60Hz) and
PAL.SECAM(50Hz) Mode. Therefore adjustment point data
for a total of 4 screens (P1-P3&FACT) is recorded in the
E²PROM.
When the power is input to the set, the SUB MPU reads the
176 point adjustment data (EX. P-2) from the E²PROM. After
curve interpolation, this is then written to the SRAM through
the LSI as compensating data.
The LSI reads the data from the SRAM. After outputting as 16
bit serial data while performing straight line interpolation, this
is then Digital/Analog (D/A) converted, amplified, and then
input to the R,G and B convergence coils.
PAL.SECAM(50Hz) Mode. Therefore adjustment point data
for a total of 4 screens (P1-P3&FACT) is recorded in the
E²PROM.
When the power is input to the set, the SUB MPU reads the
176 point adjustment data (EX. P-2) from the E²PROM. After
curve interpolation, this is then written to the SRAM through
the LSI as compensating data.
The LSI reads the data from the SRAM. After outputting as 16
bit serial data while performing straight line interpolation, this
is then Digital/Analog (D/A) converted, amplified, and then
input to the R,G and B convergence coils.
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16 points
11
points
P-1
P-2
P-4
P-3
ADJUSTED DATA IN EEPROM
Sub
MPU
LSI
SRAM
NTSC
PAL
COPY
BOX
PAL
(factory)
D/A
R(H,V)
G(H,V)
B(H,V)
Calculation
AMP
AMP
R-Coil (H,V)
G-Coil (H,V)
B-Coil (H,V)
AMP
Convergence
coil
12
Reset & Remote control stop
When the power is turned on, the reset voltage is input
from the RESET IC to the SUBMPU, LSI and OSDIC
after 5V is supplied to each IC, thereby starting
operation.
When the user enters the STATIC convergence
adjustment mode, or when the serviceman enters the
Convergence adjustment mode in service 2 , data on the
present colour system status (NTSC or PAL) , and that
the system has entered convergence adjustment mode is
input from the main MPU to the IC7103 I²C I/O Expander
Pin 15 through the I²C BUS.
from the RESET IC to the SUBMPU, LSI and OSDIC
after 5V is supplied to each IC, thereby starting
operation.
When the user enters the STATIC convergence
adjustment mode, or when the serviceman enters the
Convergence adjustment mode in service 2 , data on the
present colour system status (NTSC or PAL) , and that
the system has entered convergence adjustment mode is
input from the main MPU to the IC7103 I²C I/O Expander
Pin 15 through the I²C BUS.
The IC7103 I²C I/O Expander inputs the following output
to the SUB MPU. At the same time this Expander
indicates that Serial Data is being received from the
remote controller.
Further, the information in VDAC from pin 13 of the
IC7103 I²C I/O Expander, stating the normal state or
whether static or dynamic adjustment is to be performed,
is sent to the SUBMPU.
The SUB MPU sets the remote control terminal pin 110
to "L" indicating that the unit has entered adjustment
mode, so that the Main MPU does not accept
instructions from the remote control.
When adjustment is completed, the Sub MPU outputs an
"H" and returns the Main MPU to normal operation.
to the SUB MPU. At the same time this Expander
indicates that Serial Data is being received from the
remote controller.
Further, the information in VDAC from pin 13 of the
IC7103 I²C I/O Expander, stating the normal state or
whether static or dynamic adjustment is to be performed,
is sent to the SUBMPU.
The SUB MPU sets the remote control terminal pin 110
to "L" indicating that the unit has entered adjustment
mode, so that the Main MPU does not accept
instructions from the remote control.
When adjustment is completed, the Sub MPU outputs an
"H" and returns the Main MPU to normal operation.
SUB MPU
21pin
22pin
E²PROM
NTSC
H
L
P - 1
PAL,SECAM
L
H
P - 2
Copy Box
H
H
P - 3
TEST
L
L
P - 4
SUB MPU
20pin
NTSC
L
PAL,SECAM
H
IC7105
RESET
2
1
IC7706
SUB MPU
IC7107
LSI
IC7110
OSD
71
26
20
5V
RESET
Remocon
IC7103
IIC I/O
70
69
74
14
76
15
13
9
IC1101
MAIN MPU
10
4
7
P1-P4
Select
Select
MUTE
SDA
SCL
SCL
V-DAC
NT/PAL
IC7706
SUB MPU
22
15
20
16
21
11
RCN-IN
110
Remote control Stop MAIN SUB
REMOTO CONTROL STOP
Printed in Japan
TELEVISION & NETWORK SYSTEMS DIVISION
Matsushita Electric Industrial Co,.Ltd.
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