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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
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