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and defection is performed in the last half of the scanning
period. Next, when Q432 becomes OFF, the charge that
had been stored in DY up to that point releases
a
resonance current to the resonant capacitors C435, C444
and C445 and charges them.The current stored in C435,
C444 and C445 is then flowed back to DY, and an
opposite charge is then stored in DY. This opposite
charge then switches the dumper diode in Q432 ON, the
resonance state is completed, and an amplifying current
is then flowed again directly to DY through the dumper
diode. By this means, deflection in the first half of the
scanning period is performed, and when Q432 becomes
ON at the end of the first half of the scanning period,
deflection during the last half is begun, thus completing
one cycle.
7.CPU
Pin description
Pint:
H-sync. input (Horizontal pulse for OSD)
Pin2:
\V-sync. input (Vertical pulse for OSD)
Pin3:
Volume contro! output (6-bit DAC)
Pin4:
Colour control output (6-bit DAC)
Pin5:
Brightness control output (6-bit DAC)
Pin6:
Contrast control output (6-bit DAC)
Pin7/8: Not used (GND)
Pin9:
TV/AV output (L:AV mode)
Pinti0: AFT ON/OFF output (L:AFT ON)
Pini1: Not used (GND)
Pini2: l2C bus SCL (Serial clock for memory)
Pin13: 12C bus SDA (Serial date for memory)
Pin14: Tuning voltage output
Pini5: Ident signal input (L:No signal)
Pin16: R/C signal input
Pini7/18: Band select option input
Pini9: Not used (Open)
Pin20: SCART auto switch input (L:VCR Play)
Pin21/22: Band selector output
Pin23: Supply Ground
Pin24: Oscillator input for CPU
Pin25: Oscillator output for CPU
Pin26: Supply Ground
Pin27: Power supply(+5V)
Pin28: Oscillator output for OSD
Pin29: Oscillator input for OSD
Pin30: Reset input
Pin31: Protect signal input (L:Power circuit defects)
Pin32: Sync. ID signal input
Pin33: AFT signal input
Pin34: Keyboard scan 2
Pin35: Keyboard scan 1
Pin36~45: Not used (GND)
Pin46: Not used
Pin47: Mute output in no picture(FTZ mute)
Pin48: Power ON/OFF output (H:ON)
Pin49: Blanking output for OSD
Pin50: Not used (Open)
Pin51: Green output for OSD
Pin52: Not used (Open)
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