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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.
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.
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
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