Panasonic KX-W1500

7.3 CRT Display Circuit Board
V-Sync
IN
V-sync
Sep
Out
’
V-Oscillator
Charge
Sync
Sep
In
V-Oscillator Discharge H-AFC In
V-Power Voltage — H-AFC Out
V-Voltage Booster Out H-Oscillator In
V-Return V-Return Pulse Width Control
V-Out
Voltage
Booster
H-Power
Voltage
V-Out H-Pre Drive Out
1C501
(TVSUPC1379C)
Explanation of Pin Function
@ “\V-Sync IN” is used for Vertical Synchronization Input.
@“V-Oscillator Charge” and “V-Oscillator Discharge” are used for Vertical Oscillation Circuit in 1C501.
Vertical Oscillation Timing is set by Pin 2 and Pin 3.
@ “\V-Power Voltage” is Vcc for vertical circuit in this IC.
® “\V-Voltage Booster Out”, “V-Return”, “V-Out Voltage Booster”, “V-Return Pulse Width Control” makes vertical
amplify circuit.
This circuit makes the vertical signals to deflect the DY.
@“\V-Out” is Vertical signal output for DY.
@ “\V-Sync Sep Out” is not connected.
@ “Sync Sep In” is used for horizontal synchronization input.
@“H-AFC In”, “H-AFC Out” makes horizontal AFC circuit.
Pin 13, 14 is used for AFC timing setting.
®“H-Oscillator In” is used for horizontal oscillation setting.
© “H-Power Voltage” is Vcc for horizontal circuit in this IC.
@“H-Pre Drive Out” outputs signals to drive Q502.
= BR