DOWNLOAD Panasonic Chassis / Euro-5VP Service Manual ↓ Size: 192.78 KB | Pages: 13 in PDF or view online for FREE

Model
Chassis Euro-5VP
Pages
13
Size
192.78 KB
Type
PDF
Document
Service Manual / Other
Brand
Device
TV / EURO-5VP
File
chassis-euro-5vp.pdf
Date

Panasonic Chassis / Euro-5VP Service Manual / Other ▷ View online

7
5.  Single colour mode
Operation :
During the service mode, each colour (R,G and B) can be
displayed by “HELP” key of remote control.
Command data is sent to IC7707(DAC) from IC1101(MPU)
via IIC bus line.
Then the voltage is output from pin No.1, 2 and 9 of IC7707
as follows.
IC7707 Pin No.
1
2
9
B
H
L
H
G
L
H
H
R
H
H
L
R+G+B
L
L
L
Above voltage are applied to Q7718, Q7717 and Q7715 as
blanking plus though Q7728-30.
IC1101
MPU
69
70
CLK
DATA
16
1
2
B BLK
IC7707
9
G BLK
R BLK
14
15
+9V
+9V
Q7730
Q7729
Q7728
1
2
B
9
G
R
IC7703
RGB out
Q7718
Q7717
Q7715
CRT-B
CRT-G
CRT-R
8
6.  Protection
Purpose
To prevent smoke, fire and the radiation of X-rays due to
abnormally high voltages by using detection circuits (listed
below) to instantly turn off the power in the event of a
problem. Also, depending on the circuit, the projection
tubes can be damaged in the event of a problem; therefore,
there is also a circuit that informs the blanking circuit when
a problem arises so that the video signals to the cathodes
can be blanked.
There is a circuit that prevents the power being turned on by
remote control once a problem is detected.
Operation.
EURO5VP chassis has protection management IC which is
IC1103 (SOS) on A board.
Protection line of each circuit is connected to IC1103 pin
No.5-7 and 9-11.
When some of these pins go to “H”, this abnormal
information is informed to IC1101 (MPU) via IIC bus line.
Then pin No.52 of IC1101 voltage to “H”, Q1101 turns ON,
Q6751 base voltage drops to LOW and trips the RL6701.
D1111
69
70
IC1101
MPU
A2/W1
7
ETC.
6
7
9
10
11
5
D1105
D1104
75
Q1109
Q1109
+35V
Q1110
+12V
Q1108
+5V
EHT.
NECK
CONV.
+.- 15V
EHT.
IC1103
SOS
14
15
CLK
DATA
TPF51
D400/Q400
<VERTICAL>
TPF41
D500/Q503
D514/Q511
<EHT DET.>
D7560
<+22V/-22V>
52
Q7115 <R>
Q7117 <G>
Q7118 <B>
CRT STOP
D869
<+130V>
D861
<+15V/-15V>
Q1101
RL6701
P11/D4
4
Q6751
9
7.  Digital convergence
IIC EXPANDER
IC7103
JLC1562BF
IIC EXPANDER
IC7103
JLC1562BF
IIC EXPANDER
IC7103
JLC1562BF
SUB MPU
IC7106
SC430409CFC
SUB MPU
IC7106
SC430409CFC
SUB MPU
IC7106
SC430409CFC
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-0
IC7108
SRAM-0
IC7108
SRAM-0
IC7108
SRAM-1
IC7409
SRAM-1
IC7409
SRAM-1
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-1
IC7401
LC78815M
IC7402
LC78815M
IC7403
LC78815M
DYNAMIC DAC
ARRAY-1
IC7401
LC78815M
IC7402
LC78815M
IC7403
LC78815M
DYNAMIC DAC
ARRAY-1
IC7111
LC78815M
IC7112
LC78815M
IC7113
LC78815M
DYNAMIC DAC
ARRAY-0
IC7111
LC78815M
IC7112
LC78815M
IC7113
LC78815M
DYNAMIC DAC
ARRAY-0
IC7111
LC78815M
IC7112
LC78815M
IC7113
LC78815M
DYNAMIC DAC
ARRAY-0
CONVER
-GENCE
AMP
CONVER
-GENCE
AMP
CONVER
-GENCE
AMP
R-V
R-H
R-V
R-H
R-V
R-H
G-V
G-H
G-V
G-H
G-V
G-H
B-V
B-H
B-V
B-H
B-V
B-H
SW
IC7404
SW
IC7404
SW
IC7404
IC7116
UPC4570G2
IC7117
UPC4570G2
IC7118
UPC4570G2
ACTIVE
LPF
IC7116
UPC4570G2
IC7117
UPC4570G2
IC7118
UPC4570G2
ACTIVE
LPF
IC7116
UPC4570G2
IC7117
UPC4570G2
IC7118
UPC4570G2
R-V0
R-V0
R-V0
G-V0
G-V0
G-V0
B-V0
B-V0
B-V0
R-H0
R-H0
R-H0
G-H0
G-H0
G-H0
G-H0
G-H0
G-H0
R-V1
R-V1
R-V1
R-V
R-V
R-V
R-H1
R-H1
R-H1
G-V1
G-V1
G-V1
G-H1
G-H1
G-H1
B-V1
B-V1
B-V1
B-H1
B-H1
B-H1
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
OSD
RGBYs In
OSD
RGBYs In
OSD
RGBYs Out
OSD
RGBYs Out
OSD
RGBYs Out
IIC Bus
IIC Bus
Remote
Control In
Remote
Control Out
VP
HP
CLK
CLK
HPOUT
NRHP
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 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.
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 .
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 .
The dynamic convergence wave and the static wave are
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 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.
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