Service manual

30
IC 301(AN 5277)
Dual Channel SEPP Power Amplifier
Pin
No
Pin Name Short Description
V DC
ST-BY
Pin
No
Pin Name Short Description
V DC
ST-BY
1 N.C NOT CONNECTED 0 0 7 CH.2 OUT CHANNEL 2 OUTPUT 12 0
2 CH.1 IN. CHANNEL 1 INPUT 0 0 8 MUTE MUTE 0,37 4,44
3 RF RIPPLE FILTER 23,1 0,76 9 GND(OUTPUT) OUTPUT GROUND 0 0
4 GND(INPUT) INPUT GROUND 0 0 10 Vcc Vcc 25,3 8,47
5 CH.2 IN CHANNEL 2 INPUT 0 0 11 ST-BY STANDBY 16,5 0,43
6 N.C NOT CONNECTED 0 0 12 CH.1 OUT CHANNEL 1 OUTPUT 12 0
IC 602(ICE1QS01)
Dual Channel SEPP Power Amplifier
Pin
No Pin Name Short Description
V DC
ST-BY
Pin
No Pin Name Short Description
V DC
ST-BY
1 N.C NOT CONNECTED 0 0 5 OFC
OVERVOLTAGE FAULT
COMPARATOR 0 0
2 PCS PRIMARY CURRENT SIMULATION 1,3 9,06 6 GND GROUND 0 0
3 RZI
REGULATION AND ZERO CROSSING
INPUT
1,35 0,04 7 OUT OUTPUT 1,79 0
4 SRC
SOFT-START AND REGULATION
CPACITOR
2,76 0,34 8 Vcc SUPPLY VOLTAGE 11,4 10,1
IC 501(TDA 8357)
VERTICAL DEFLECTION
Pin
No
Pin Name Short Description
V DC
ST-BY
Pin
No
Pin Name Short Description
V DC
ST-BY
1 INA INPUT A 0,79 0 6 Vfb FLAYBACK SUPPLY COLTAGE 46,5 0
2 INB INPUT B 0,77 0 7 OUTA OUTPUT A 6,46 0
3 Vp SUPPLY VOLTAGE 12,4 0 8 GUARD GUARD OUTPUT 0,25 0
4 OUTB OUTPUT B 6,5 0 9 FEEDB FEEDBACK INPUT 6,55 0
5 GND GROUND 0 0