APPENDIX
A-4
Manual 0-2747
APPENDIX 4: LOGIC/GATE PC BOARD LAYOUT
Logic/Gate PC Board Signals
J1-1
36 VAC from Auxiliary Transformer
J1-2
115 VAC from Auxiliary Transformer
J1-3
Center Tap from Auxiliary Transformer (36VAC)
J1-4
Not Used
J1-5
36 VAC from Auxiliary Transformer
J1-6
115 VAC Return from Auxiliary Transformer
J2-1
115 VAC Return to K10 Relay/Contactor MC1
J2-2
115 VAC Return to Fan #1
J2-3
115 VAC Return to Fan #2
J2-4
115 VAC Return to Solenoid
J2-5
Not Used
J2-6
Not Used
J2-7
115 VAC to K10 Relay/MC1 Contactor
J2-8
115 VAC to Fan #1
J2-9
115 VAC to Fan #2
J2-10
115 VAC to Solenoid
J2-11
Not Used
J2-12
Not Used
J2-13
Logic Low -Pressure Switch Signal
J2-14
Return from Pressure Switch
J2-15
Logic Low -Over Temperature Switch on Input Bridge
J2-16
Over Temperature Switch Return
J3-1
36 VAC to ON/OFF Switch
J3-2
36 VAC from ON/OFF Switch to Logic/Gate PC Board
J3-3
36 VAC to ON/OFF Switch
J3-4
36 VAC from ON/OFF Switch to Logic/Gate PC Board
J3-5
Logic LowFrom RUN/SET/LATCH Switch
on Front Panel (RUN)
J3-6
PCB Common
J3-7
+10 vdc to Front Panel Current Control Pot J14-1
J3-8
From Front Panel Current Control Pot Wiper J14-2
J3-9
To Current Control Pot J14-3 (Return)
J3-10
Unreg18 VDC to Front Panel J14-4
J3-11
Logic Low for AC Indicator on Front Panel (J14-5)
J3-12
Logic Low for GAS Indicator on Front Panel (J14-6)
J3-13
Logic Low for TEMP Indicator on Front Panel (J14-7)
J3-14
Logic Low for DC Indicator on Front Panel (J14-8)
J3-15
Not Used
J3-16
Logic Low - From RUN/SET/LATCH Switch on
Front Panel (LATCH)
A-02528
Logic/Gate PC Board
TP22
TP20
TP26
TP23
TP7
TP8
TP5
TP1
TP2
TP18
TP21
TP24
TP25
D45
D39
D36
D1
D2
D20
Summary of Contents for Pak Master 75XL Plus
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