Panasonic E3 / E3D / Chassis Service Manual / Other ▷ View online
13
- memo -
14
8.
Digital convergence
IIC EXPANDER
IC7103
JLC1562BF
IIC EXPANDER
IC7103
JLC1562BF
IIC EXPANDER
IC7103
JLC1562BF
SUB MPU
IC7106
SC430437CFC
LSI
IC7107
TVSA0030
LSI
IC7107
TVSA0030
LSI
IC7107
TVSA0030
STATIC DAC
IC7109
M62354FP
STATIC DAC
IC7109
M62354FP
STATIC DAC
IC7109
M62354FP
OSD Text
IC7110
TVSA0036
OSD Text
IC7110
TVSA0036
OSD Text
IC7110
TVSA0036
SRAM-1
IC7108
SRAM-2
IC7409
EEPROM
IC7101
EEPROM
IC7101
EEPROM
IC7101
PLL
IC7104
PLL
IC7104
PLL
IC7104
LATCH
IC7102
LATCH
IC7102
LATCH
IC7102
IC7401
LC78815M
IC7402
LC78815M
IC7403
LC78815M
DYNAMIC DAC
ARRAY-2
IC7111
LC78815M
IC7112
LC78815M
IC7113
LC78815M
DYNAMIC DAC
ARRAY-1
IC7111
LC78815M
IC7112
LC78815M
IC7113
LC78815M
CONVER
-GENCE
AMP
-GENCE
AMP
R-V
R-H
R-H
R-V
R-H
R-H
R-V
R-H
R-H
G-V
G-H
G-H
G-V
G-H
G-H
G-V
G-H
G-H
B-V
B-H
B-H
B-V
B-H
B-H
B-V
B-H
B-H
SW
IC7404
SW
IC7404
IC7116
UPC4570G2
IC7117
UPC4570G2
IC7118
UPC4570G2
ACTIVE
LPF
IC7116
UPC4570G2
IC7117
UPC4570G2
IC7118
UPC4570G2
ACTIVE
LPF
R-V1
G-V1
B-V1
R-H1
G-H1
B-H1
R-V2
R-V
R-V
R-V
R-H2
G-V2
G-H2
B-V2
B-H2
G-V
G-V
G-V
B-V
B-V
B-V
R-H
R-H
R-H
G-H
G-H
G-H
B-H
B-H
B-H
OSD
RGBYs In
RGBYs In
OSD
RGBYs In
RGBYs In
OSD
RGBYs In
RGBYs In
OSD
RGBYs Out
RGBYs Out
OSD
RGBYs Out
RGBYs Out
OSD
RGBYs Out
RGBYs Out
IIC Bus
IIC Bus
Remote
Control In
Control In
Remote
Control Out
Control Out
VP
HP
CLK
CLK
HPOUT
NRHP
Only use for E3D chassis.
15
When power is input at normal state, the Sub MPU reads
the adjustment data for the 165 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 15
horizontal points and the data for every other vertical
scanning line. Further, the adjustment point data for the 15
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 165 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 15
horizontal points and the data for every other vertical
scanning line. Further, the adjustment point data for the 15
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: E3D 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: E3D 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,
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 .
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.
16
.The digital convergence circuit records, in the
E²PROM, the adjustment values of the correction
current sent to the convergence coil, for each screen, at
15 points horizontally ( 13 points in the inner screen)
and 11 points vertically (9 points in the inner screen) for
a total of 165 points as the crosshatch intersection
point adjustment locations, as vertical and horizontal
adjustment data.
E²PROM, the adjustment values of the correction
current sent to the convergence coil, for each screen, at
15 points horizontally ( 13 points in the inner screen)
and 11 points vertically (9 points in the inner screen) for
a total of 165 points as the crosshatch intersection
point adjustment locations, as vertical and horizontal
adjustment data.
Memory data and copy box
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 165 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.
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 165 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.
Adjusted Data in EEPROM
Sub
MPU
LSI
SRAM
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
coil
P-1
NTSC
P-2
PAL
P-3
COPY
BOX
P-4
FACTORY
USE
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15 points
11
points
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