Super Star 4900B, Service Manual

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Main PCB
IC-5
Main PCB
IC-6
KT3170
1 IN + Non inverting input of the op amp.
2 IN - Inverting input of the op amp.
3 GS Gain Select.
4 VREF Reference Voltage output
5 I
IN
Input inhibit
6 PDN Control input for the stand-by power down mode.
7, 8 OSC1 OSC2 Clock input/output.
9 GND Ground pin.
10 OE Output Enable input.
11 - 14 Q1 - Q4 Three state data output.
15 DSO Delayed Steering Output
16 ESO Early Steering Outputs
17 SI / GTO Steering Input/Guard Time Output
18 VDD Power Supply