B&K 1794 Section Part List & Schematics, L1791-FP-CNT-0603 PCB Assy, 1KPF/100V, Disc

Page 29

SECTION - 6

PART LIST & SCHEMATICS

1.L1791-FP-CNT-0603 PCB ASSY

Reference

Part

Reference

Part

 

Designator

Description

Designation

Description

 

RESISTORS

 

 

 

 

R1

1K

R22

500E(3206F)

 

R2

Not Used

R23

33K

 

R3

100E

R24

10K

 

R4

3.3K

R25

10K

 

R5

1K

R26

100E(3206F)

 

R6

2.2K

R27

Not Used

 

R7

4K7

R28

100E(3206F)

 

R8

6K8

R29

1K

 

R9

6K8

R30

560E

 

R10

15K

R31

820E

 

R11

1K

R32

100E(3206F)

 

R12

1K

R33

Not Used

 

R13

1K, 10W

R34

100K

 

R14

1K

R35

Short

 

R15

1K

R36

1.5K

 

R16

3.3E

R37

Short

 

R17

100E

R38

330K

 

R18

2K2

R39

100E

 

R19

2K

R40

1K8

 

R20

3K6

R41

12K

 

R21

500E(3206F)

 

 

 

ZENERS

 

 

 

 

Z1

TL 431

Z2

TL 431

 

DIODES

 

 

 

 

D1

1N4148

D4

1N4148

 

D2

1N4148

D5

1N4007

 

D3

1N4148

D6

1N4007

 

CAPACITORS

 

 

 

 

C1

1KPF/100V, DISC

C5

10µF/35V, ELE

C2

1µF/100V, ELE

C6

10µF/35V, ELE

C3

220µF/50V, ELE

C7

Not Used

C4

1KPF/100V, DISC

C8

0.1µF/230V

IC

 

 

 

 

U1

LM324

 

 

 

SWITCHES

 

 

 

 

SW1-3

2P2W SW PUSH BUTTON

 

 

TERMINALS

 

 

 

 

T1

60A / 1000V O/P +Ve RED TERMINAL

( 4mm )

T2

60A / 1000V O/P -Ve LIGHT BLUE TERMINAL

( 4mm )

T3

10A / 1000V Sns +Ve RED / BANANA TERMINAL

(25mm L)

T4

10A / 1000V Sns -Ve BLACK / BANANA TERMINAL(25mm L)

T5

EARTH BRASS BINDING NICKEL PLATED

( 4mm )

26

Image 29
Contents BK Precision Limited Two Year Warranty Table of Contents Limit Setting Output ON/OFF SwitchSection General Information Description Remote Programming With External 5K PotSection Specifications Section Installation Repackaging for Shipment Input TAP Selection for 230V OperationSection Operating Instructions Readjust the current limit in the remote sensing mode Reverse Current Loading Output CapacitanceReverse Voltage Loading Terms in this Manual Terms AS Marked on Equipment Operators Safety SummaryUSE the Proper Power Cord For Qualified Service Personnel only Servicing Safety SummaryDo not Service Alone USE Care When Servicing with Power onServicing shall be done only by Qualified personnel Section Service Instruction GeneralTrouble Shooting Techniques Repairs & Maintenance Page Parts Ordering & Replacing REF. PCB no PIN noPage Page Fuse Blows Fault Finding ProcedureFuse Blows Unregulated O/P Voltage Unregulated O/P VoltageNo O/P Voltage No Output VoltageNo DPM Indication No DPM IndicationDPM not Read Unit not Take Current Unit not Take CurrentUnit Directly Goes To CC Unit Directly Goes to CCPoor Line Regulation No Current ControlNo Current Control Poor Line RegulationPoor Load Regulation Poor Load RegulationCV, CC, LED not Glow External Programming Not OK External Programming not OKRemote Sense not OK L1791-FP-CNT-0603 PCB Assy Section Part List & Schematics1KPF/100V, Disc 2P2W SW Push ButtonPS-PREG-1791-0503 PCB Assly SW1 Grey Colour CAP for Push Switch SW2 SW3DPM/01 REV 01 X PS-PWR-L1791-0703A PCB Assly PS-AUX-DC-L1791-0503 PCB AsslyBack Trough Assly Front Panel AsslyMain Chassis 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 Precision Corp Service InformationPrecision Corp