B&K
1794
instruction manual
PRE Regulator / AUX. P/S PCBs 1790
Troubleshooting
Specs
Install
Section Part List & Schematics
Warranty
Maintenance
Fault Finding Procedure
Limit Setting
Safety
Power Source
Page 40
PRE REGULATOR / AUX. P/S PCBs 1790 / 1791
37
Page 39
Page 41
Image 40
Page 39
Page 41
Contents
BK Precision
Limited Two Year Warranty
Table of Contents
Output ON/OFF Switch
Limit Setting
Section General Information Description
Remote Programming With External 5K Pot
Section Specifications
Section Installation
Input TAP Selection for 230V Operation
Repackaging for Shipment
Section Operating Instructions
Readjust the current limit in the remote sensing mode
Reverse Voltage Loading
Output Capacitance
Reverse Current Loading
USE the Proper Power Cord
Operators Safety Summary
Terms in this Manual Terms AS Marked on Equipment
Servicing Safety Summary
For Qualified Service Personnel only
Do not Service Alone
USE Care When Servicing with Power on
Trouble Shooting Techniques
Section Service Instruction General
Servicing shall be done only by Qualified personnel
Repairs & Maintenance
Page
REF. PCB no PIN no
Parts Ordering & Replacing
Page
Page
Fuse Blows
Fault Finding Procedure
Fuse Blows
Unregulated O/P Voltage
Unregulated O/P Voltage
No Output Voltage
No O/P Voltage
No DPM Indication
No DPM Indication
DPM not Read
Unit not Take Current
Unit not Take Current
Unit Directly Goes to CC
Unit Directly Goes To CC
No Current Control
Poor Line Regulation
No Current Control
Poor Line Regulation
CV, CC, LED not Glow
Poor Load Regulation
Poor Load Regulation
Remote Sense not OK
External Programming not OK
External Programming Not OK
Section Part List & Schematics
L1791-FP-CNT-0603 PCB Assy
1KPF/100V, Disc
2P2W SW Push Button
SW1 Grey Colour CAP for Push Switch SW2 SW3
PS-PREG-1791-0503 PCB Assly
DPM/01 REV 01 X
PS-AUX-DC-L1791-0503 PCB Assly
PS-PWR-L1791-0703A PCB Assly
Main Chassis Assly
Front Panel Assly
Back Trough Assly
Front Panel Layout
Back Panel Layout
TOP View
Bottom View of Model 1790
Front Panel Control PCB of 1790
Power Module PCB of 1790
PRE Regulator / AUX. P/S PCBs 1790
Service Information
Precision Corp
Precision Corp
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