I-Tech IT6800A Series User manual

DC Programmable Power
Supply
Series IT6800A/B User’s Manual
Model: IT6831A/IT6832A/IT6833A/IT6835A/IT6861A
/IT6862A/IT6863A/IT6872A/IT6873A/IT6874A
/IT6832B/IT6833B/IT6835B/IT6861B/IT6862B
/IT6863B/IT6872B /IT6873B/IT6874B
Version:3.1

Notices
© Itech Electronic, Co., Ltd. 2018
No part of this manual may be
reproduced in any form or by any means
(including electronic storage and
retrieval or translation into a foreign
language) without prior permission and
written consent from Itech Electronic,
Co., Ltd. as governed by international
copyright laws.
Manual Part Number
IT6800A/B-402187
Revision
Third Edition: March 27,
2018
Itech Electronic, Co., Ltd.
Trademarks
Pentium is U.S. registered trademarks
of Intel Corporation.
Microsoft, Visual Studio, Windows and
MS Windows are registered trademarks
of Microsoft Corporation in the United
States and/or other countries and
regions.
Warranty
The materials contained in this
document are provided “as is”, and
is subject to change, without prior
notice, in future editions. Further, to
the maximum extent permitted by
applicable laws, ITECH disclaims
all warrants, either express or
implied, with regard to this manual
and any information contained
herein, including but not limited to
the implied warranties of
merchantability and fitness for a
particular purpose. ITECH shall
not be held liable for errors or for
incidental or indirect damages in
connection with the furnishing, use
or application of this document or of
any information contained herein.
Should ITECH and the user enter
into a separate written agreement
with warranty terms covering the
materials in this document that
conflict with these terms, the
warranty terms in the separate
agreement shall prevail.
Technology Licenses
The hardware and/or software
described herein are furnished under a
license and may be used or copied only
in accordance with the terms of such
license.
Restricted Rights Legend
Restricted permissions of the U.S.
government. Permissions for software
and technical data which are authorized
to the U.S. Government only include
those for custom provision to end users.
ITECH follows FAR 12.211 (technical
data), 12.212 (computer software).
DFARS 252.227-7015 (technical
data--commercial products) for national
defense and DFARS 227.7202-3
(permissions for commercial computer
software or computer software
documents) while providing the
customized business licenses of
software and technical data.
Safety Notices
A CAUTION sign denotes a
hazard. It calls attention to an
operating procedure or practice
that, if not correctly performed
or adhered to, could result in
damage to the product or loss of
important data. Do not proceed
beyond a CAUTION sign until
the indicated conditions are fully
understood and met.
A WARNING sign denotes a
hazard. It calls attention to an
operating procedure or practice
that, if not correctly performed
or adhered to, could result in
personal injury or death. Do not
proceed beyond a WARNING
sign until the indicated
conditions are fully understood
and met.
NOTE
A NOTE sign denotes
important hint. It calls attention
to tips or supplementary
information that is essential for
users to refer to.

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. i
Quality Certification and Assurance
We certify that series IT6800A/B power supply meets all the published
specifications at time of shipment from the factory.
Warranty ITECH warrants that the product will be free from defects in material and
workmanship under normal use for a period of one (1) year from the date of
delivery (except those described in the Limitation of Warranty below).
For warranty service or repair, the product must be returned to a service center
designated by ITECH.
The product returned to ITECH for warranty service must be shipped
PREPAID. And ITECH will pay for return of the product to customer.
If the product is returned to ITECH for warranty service from overseas, all
the freights, duties and other taxes shall be on the account of customer.
Limitation of Warranty
This Warranty will be rendered invalid in case of the following:
Damage caused by circuit installed by customer or using customer own
products or accessories;
Modified or repaired by customer without authorization;
Damage caused by circuit installed by customer or not operating our
products under designated environment;
The product model or serial number is altered, deleted, removed or made
illegible by customer;
Damaged as a result of accidents, including but not limited to lightning,
moisture, fire, improper use or negligence.
Safety Symbols
Direct current
ON (power on)
Alternating current
OFF (power off)
Both direct and alternating
current
Power-on state
Protective conductor terminal
Power-off state
Earth (ground) terminal
Reference
terminal
Caution, risk of electric shock
Positive terminal
Warning, risk of danger (refer
to this manual for specific
Warning or Caution
information)
Negative terminal
Frame or chassis terminal
-
-

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. ii
Safety Precautions
The following safety precautions must be observed during all phases of
operation of this instrument. Failure to comply with these precautions or specific
warnings elsewhere in this manual will constitute a default under safety
standards of design, manufacture and intended use of the instrument. ITECH
assumes no liability for the customer’s failure to comply with these precautions.
Do not use the instrument if it is damaged. Before operation, check the
casing to see whether it cracks. Do not operate the instrument in the
presence of inflammable gasses, vapors or dusts.
The power supply is provided with a three-core power line during delivery
and should be connected to a three-core junction box. Before operation, be
sure that the instrument is well grounded.
Make sure to use the power cord supplied by ITECH.
Check all marks on the instrument before connecting the instrument to
power supply.
Use electric wires of appropriate load. All loading wires should be capable
of bearing maximum short-circuit current of power supply without
overheating. If there are multiple electronic loads, each pair of the power
cord must be capable of bearing the full-loaded rated short-circuit output
current
Ensure the voltage fluctuation of mains supply is less than 10% of the
working voltage range in order to reduce risks of fire and electric shock.
Do not install alternative parts on the instrument or perform any
unauthorized modification.
Do not use the instrument if the detachable cover is removed or loosen.
To prevent the possibility of accidental injuries, be sure to use the power
adapter supplied by the manufacturer only.
We do not accept responsibility for any direct or indirect financial damage
or loss of profit that might occur when using the instrument.
This instrument is used for industrial purposes, Do not apply this product to
IT power supply system.
Never use the instrument with a life-support system or any other equipment
subject to safety requirements.
Failure to use the instrument as directed by the manufacturer may render
its protective features void.
Always clean the casing with a dry cloth. Do not clean the internals.
Make sure the vent hole is always unblocked.

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. iii
Environmental Conditions
The instrument is designed for indoor use and an area with low condensation.
The table below shows the general environmental requirements for the
instrument.
Environmental Conditions
Requirements
Operating temperature
0°C to 40°C
Operating humidity
20%-80% (non-condensation)
Storage temperature
-20°C to 70 °C
Altitude
Operating up to 2,000 meters
Pollution degree
Pollution degree 2
Installation category
II
Note
To make accurate measurements, allow the instrument to warm up for 30 min before
operation.
Regulatory Markings
The CE mark indicates that the product
complies with all the relevant European
legal directives. The specific year (if any)
affixed refers to the year when the design
was approved.
The instrument complies with the WEEE
Directive (2002/96/EC) marking
requirement. This affixed product label
indicates that you must not discard the
electrical/electronic product in domestic
household waste.
This symbol indicates the time period
during which no hazardous or toxic
substances are expected to leak or
deteriorate during normal use. The
expected service life of the product is 10
years. The product can be used safely
during the 10-year Environment Friendly
Use Period (EFUP). Upon expiration of
the EFUP, the product must be
immediately recycled.
Waste Electrical and Electronic Equipment (WEEE)
Directive
2002/96/EC Waste Electrical and Electronic Equipment
(WEEE) Directive
This product complies with the WEEE Directive (2002/96/EC)
marking requirement. This affix product label indicates that you
must not discard the electrical/electronic product in domestic
household waste.
Product Category
With reference to the equipment classifications described in the
Annex I of the WEEE Directive, this instrument is classified as a

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. iv
“Monitoring and Control Instrument”.
To return this unwanted instrument, contact your nearest
ITECH office.

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. v
Compliance Information
Complies with the essential requirements of the following applicable European
Directives, and carries the CE marking accordingly:
Electromagnetic Compatibility (EMC) Directive 2014/30/EU
Low-Voltage Directive (Safety) 2014/35/EU
Conforms with the following product standards:
EMC Standard
IEC 61326-1:2012/ EN 61326-1:2013 ¹²³
Reference Standards
CISPR 11:2009+A1:2010/ EN 55011:2009+A1:2010 (Group 1, Class A)
IEC 61000-4-2:2008/ EN 61000-4-2:2009
IEC 61000-4-3:2006+A1:2007+A2:2010/ EN 61000-4-3:2006+A1:2008+A2:2010
IEC 61000-4-4:2004+A1:2010/ EN 61000-4-4:2004+A1:2010
IEC 61000-4-5:2005/ EN 61000-4-5:2006
IEC 61000-4-6:2008/ EN 61000-4-6:2009
IEC 61000-4-11:2004/ EN 61000-4-11:2004
1. The product is intended for use in non-residential/non-domestic environments. Use of the
product in residential/domestic environments may cause electromagnetic interference.
2. Connection of the instrument to a test object may produce radiations beyond the specified
limit.
3. Use high-performance shielded interface cable to ensure conformity with the EMC standards
listed above.
Safety Standard
IEC 61010-1:2010/ EN 61010-1:2010

IT6800A/B User Manual
Copyright © Itech Electronic Co., Ltd. vi
Content
DC Programmable Power Supply.............................................................................................................. 1
Quality Certification and Assurance ..........................................................................................................1
Warranty .................................................................................................................................................... 1
Limitation of Warranty................................................................................................................................1
Safety Symbols..........................................................................................................................................1
Safety Precautions ....................................................................................................................................2
Environmental Conditions.......................................................................................................................... 3
Regulatory Markings..................................................................................................................................3
Waste Electrical and Electronic Equipment (WEEE) Directive..................................................................3
Compliance Information............................................................................................................................. 5
Chapter1 Inspection and Installation.................................................................................................. 1
1.1 Verifying the Shipment.........................................................................................................................1
1.2 Instrument Size Introduction................................................................................................................1
1.3 Adjustment of Handle ..........................................................................................................................3
1.4 Disassembly of Handle........................................................................................................................4
1.5 Rack Mounting.....................................................................................................................................5
1.6 Connecting the Power Cord ................................................................................................................5
Chapter2 Quick Start ............................................................................................................................ 6
2.1 Brief Introduction .................................................................................................................................6
2.2 Front Panel Introduction ......................................................................................................................7
2.3 Keypad introduction............................................................................................................................. 7
2.4 VFD Description ..................................................................................................................................8
2.5 Rear Panel Introduction.......................................................................................................................9
2.6 Power-on Selftest ..............................................................................................................................10
2.7 Output Verification .............................................................................................................................12
Chapter3 Functions and Characteristics.......................................................................................... 14
3.1 Local Mode/Remote Mode ................................................................................................................14
3.2 Dual-range switch(IT6860A/B/IT6870A/B）......................................................................................14
3.3 Voltage setting...................................................................................................................................14
3.4 Current setting...................................................................................................................................15
3.5 Output on/off......................................................................................................................................15
3.6 switch the actual/setting value display ..............................................................................................15
3.7 CC/CV mode .....................................................................................................................................15
3.8 Save/Recall .......................................................................................................................................16
3.9 Trigger operation ...............................................................................................................................16
3.10 Menu Operation...............................................................................................................................16
3.11 OVP Function...................................................................................................................................24
3.12 KEY LOCK.......................................................................................................................................24
3.13 Remote Sense Function..................................................................................................................24
Chapter4 Remote Operation .............................................................................................................. 26
4.1 RS232 interface.................................................................................................................................26
4.2 USB interface ....................................................................................................................................27
4.3 GPIB interface (Only for IT6800B series)..........................................................................................28
Chapter5 Specifications ..................................................................................................................... 29
5.1 Specifications ....................................................................................................................................29
5.2 Supplementary Characteristics .........................................................................................................40
Appendix.................................................................................................................................................... 41
Specifications of Red and Black Test Lines.............................................................................................41
No output.................................................................................................................................................41
How to avoid it couldn’t start when test battery .......................................................................................41

Inspection and Installation
Copyright © Itech Electronic Co., Ltd. 1
Chapter1 Inspection and Installation
1.1 Verifying the Shipment
Unpack the box and check the contents before operating the instrument. If
wrong items have been delivered, if items are missing, or if there is a defect
with the appearance of the items, contact the dealer from which you purchased
the instrument immediately. The package contents include:
Checklist of Package Contents
Item
Qty.
Model
Remarks
Power Supply
x1
IT6800A/B
Series
The IT6800A/B series include:
IT6831A/IT6832A/IT6833A/IT683
5A/IT6861A/IT6862A/IT6863A/IT6
872A/IT6873A/IT6874A/IT6832B/I
T6833B/IT6835B/IT6861B/IT6862
B/IT6863B/IT6872B/IT6873B/IT68
74B
Power cord
x1
IT-E171/IT-E172
/IT-E173/IT-E17
4
User may select an appropriate
power cord that matches the
specifications of power socket
used in the area. See the
Section Connecting the Power
Cord for details.
CD
x1
-
It contains IT6800A/B power
supply User’s Manual,
Programming Guide and other
user documentations.
Ex-factory Test
Report
x1
-
It is the test report of the
instrument before delivery.
NOTE
Upon verification of the shipment, keep the package and relevant contents thereof in a
safe place. When returning the instrument for warranty service or repair, the specified
packing requirements shall be met.
1.2 Instrument Size Introduction
The instrument should be installed at well-ventilated and rational-sized space.
Please select appropriate space for installation based on the power supply size.
IT6800A/B series power supply different models are the same size, the detail size
of the power supply are shown as below. (Take the example of IT6862A)

Inspection and Installation
Copyright © Itech Electronic Co., Ltd. 2
Dimension:
Width: 255.3mm
Height: 108.7mm
Depth: 374.4mm
Detailed Dimension Drawing

Inspection and Installation
Copyright © Itech Electronic Co., Ltd. 3
1.3 Adjustment of Handle
IT6800A/B series power supply are equipped with a handle for user to easily
carry and place it.
The power supply handle may be adjusted based on three methods (as shown
in icons below). Be sure that appropriate force is applied to adjust the power
supply handle to appropriate position. (Take the example of IT6862A)
Horizontal placement
Place the instrument on the desk horizontally.
Adjustment Adjust the power supply handle to the state of rotation.
Adjust the power supply handle to appropriate position.

Inspection and Installation
Copyright © Itech Electronic Co., Ltd. 4
Place the instrument on the desk.
1.4 Disassembly of Handle
Please disassemble the handle before installing equipment on the support.
Disassembly steps (take the example of IT6862A):
1. Align the locking mouth, and pull out the handle towards two sides.
2. Rotate the handle to the appropriate position.
NOTE
Do not use too much force and mind your hands during disassembly of power supply handle

Inspection and Installation
Copyright © Itech Electronic Co., Ltd. 5
3. .Adjust the handle to the position as shown as below.
NOTE
To easily disassemble handle, align the locking mouth and locking device, which is
between the handle and the instrument
1.5 Rack Mounting
This instrument can be installed on standard 19-inch rack. ITECH provides user
with IT-E151/IT-E151A rack, as an optional mount kit. The detailed operation
please refer to the User Manual of your mount kit.
1.6 Connecting the Power Cord
Connect the power cord after checking that the power switch of the instrument
is turned OFF. Only use the power cord supplied as a standard accessory.
Select from the following Schedule of Power Cord Specifications an appropriate
power cord that matches the voltage for the area in which you use the
instrument. If the power cord included in the instrument you purchased does
not match the voltage, contact the dealer or manufacturer for change.
China
IT-E171
United States &
Canada
IT-E172
Europe
IT-E173
England
IT-E174
There are two kinds of working voltage for the power supply: 110V and 220V, so
please pay attention to the working input voltage.
AC input levels (select by change the AC power switch on the bottom of the
power supply)
Option Opt.01: 220VAC ±10%, 47 to 63 Hz
Option Opt.02: 110 VAC ±10%, 47 to 63 Hz
E
N L
E
L N
E
N L
E
L N

Quick Start
Copyright © Itech Electronic Co., Ltd. 6
Chapter2 Quick Start
This chapter introduces the front panel, the rear panel, key functions and VFD
display function of the power supply, make sure that you can quickly know the
appearance, instruction and the key function before you operate the load, Help
you make better use of this series of power supply.
2.1 Brief Introduction
IT6800A/B series power supply is single output DC programmable power
supply, which support panel programming and offer OCP and OVP.
Furthermore, built-in RS232/USB communication interface is suitable for either
bench or rack mounted operation, which can provide multiple solutions
according to the requirements of your design and test. IT6860A/B series and
IT6870A/B series programming DC power supply offer the dual-range voltage
switch for your choice, which can replace two ordinary ones.
High-visibility vacuum fluorescent display (VFD)
Digital keypad operation
High accuracy and high resolution
Low ripple and low noise
Intelligent fan control, energy conservation, noise reduction
Can be monitored by computer software
Output voltage and current values accordance with procedure
Can use the knob to adjust the voltage and current
Can adjust the numbers steps using the cursor
Can set the output timer(0.1~9999.9S)
Standard RS232/USB communication interface
Rich SCPI orders and IT6820 compatible frame protocol to facilitate the
formation of intelligent test platform
Model
Voltage
Current
Power
IT6831A
0~18V
0~10A
0~180W
IT6832A
0~32V
0~6A
0~192W
IT6833A
0~72V
0~3A
0~216W
IT6835A
0~50V
0~4A
0~200W
IT6861A
0~20V/ 0~8V
0~5A/ 0~9A
0~100W/ 0~72W
IT6862A
0~32V/ 0~12V
0~3A/ 0~6A
0~96W/ 0~72W
IT6863A
0~72V/ 0~32V
0~1.5A/ 0~3A
0~108W/ 0~96W
IT6872A
0~35V/0~15V
0~4A/0~7A
0~140W/0~105W
IT6873A
0~75V/ 0~32V
0~2A/ 0~4A
0~150W/ 0~128W
IT6874A
0~150V/ 0~60V
0~1.2A/ 0~2A
0~180W/ 0~120W
IT6832B
0~32V
0~6A
0~192W
IT6833B
0~32V
0~6A
0~192W
IT6835B
0~50V
0~4A
0~200W
IT6861B
0~20V/ 0~8V
0~5A/ 0~9A
0~100W/ 0~72W
IT6862B
0~32V/ 0~12V
0~3A/ 0~6A
0~96W/ 0~72W
IT6863B
0~72V/ 0~32V
0~1.5A/ 0~3A
0~108W/ 0~96W
IT6872B
0~35V/ 0~15V
0~4A/ 0~7A
0~140W/ 0~105W
IT6873B
0~75V/ 0~32V
0~2A/ 0~4A
0~150W/ 0~128W
IT6874B
0~150V/ 0~60V
0~1.2A/ 0~2A
0~180W/ 0~120W

Quick Start
Copyright © Itech Electronic Co., Ltd. 7
2.2 Front Panel Introduction
IT6800A/B series power supplies have two kinds of front panels. The output
terminals of IT6830A/B series power supply are circular sockets, while
IT6860A/B series power supplies are wiring terminals. Take the example of
IT6860A.
①VFD display
②Rotary knob
③Compound key, the local switch key and power switch
④Number keys and ESC escape key
⑤Function keys
⑥UP、DOWN, LEFT and RIGHT key, to move cursor
⑦Output terminals
2.3 Keypad introduction
The key functions and keys of IT6830A/B series power supply are shown as
below picture.
The key functions and keys of IT6870A/B series power supply are shown as

Quick Start
Copyright © Itech Electronic Co., Ltd. 8
below picture.
Keys
Name and the function
Shift
Compound key, co-work with OVP、Menu、Save、Trigger、Lock、
and numeric key 4 and 7 to switch the dual-range
Local
Local switch key, switch from remote mode to local operation mode
Power
Power on key
0-9
Numeric keys
OVP
Voltage set key, set the output voltage/over voltage protection point
for the power supply
Menu
Current set key, set the output current/menu function key, to set the
relevant Parameters for the power supply
Save
Callback key to call up a set value of system parameters already
stored / storage key, to save system parameter settings
Meter key, to switch from value set panel and the actual output value
display
Trigger
Enter key, to confirm the number entered and operation / trigger
button, which is used to trigger the List test.
Lock
Output on (off) keys, control power output state / keypad lock function
keys, used to lock the panel buttons
Left and right movement keys, used to set the value, to adjust the
cursor to the specified location
Up and down keys, used to select an item in the menu or increase
(decrease) the output voltage or current values
Escape key
2.4 VFD Description
char
Function
char
Function
OFF
Output is off
Timer
Output on timer function is
enabled
V-setV-set
I-setI-set
Recall
MeterMeter
EnterEnter
On/Off

Quick Start
Copyright © Itech Electronic Co., Ltd. 9
CV
The power supply is in
constant voltage mode
Sense
Not in use
CC
The power supply is in
constant current mode
Ext
Not in use
*
The power supply is in high
voltage range
Adrs
(USB) light when the
address match or (RS232)
received order
Meter
“Meter” key is pressed
Rmt
The power supply is in
remote mode
Shift
Shift key is pressed, use
compound keys
Error
The power supply has
error or fault
OVP
OVP function is enabled
Prot
The power supply is in
OVP /OTP protection
OCP
Not in use
Lock
Keypad is locked
2.5 Rear Panel Introduction
The rear panels of IT6800A/B series power supply are divided into series-Aand
series-B.
The rear panels and keyboards of IT6800A series power supply are shown as
below.
①Cooling window ②Remote sense terminal
③USB communication interface ④RS232 communication interface
⑤AC power socket (fuse contained)
The rear panels and keyboards of IT6800B series power supply are shown as
below.

Quick Start
Copyright © Itech Electronic Co., Ltd. 10
①Cooling window ②Remote sense terminal
③RS232 communication interface ④USB communication
interface
⑤AC power socket (fuse contained) ⑥GPIB communication interface
2.6 Power-on Selftest
A successful test process indicates that the instrument meets the factory
specifications and can be operated well.
Before operation, please confirm that you have fully understood the safety
instructions.
The AC input voltage is 110V or 220V, please check the switching at the
bottom of the power supply, to make sure it matches the voltage in your city.
Otherwise, the power supply may be damaged.
Use the wires of rating value and all load lines shall be capable of
withstanding the maximum short circuit output current of the power supply
without causing overheat. If there are more than one load, each pair of load
lines shall be capable of withstanding the full rated short-circuit output
current of the power supply.
Be sure to connect the main power socket to the power outlet of protective
grounding. Do not use terminal board without protective grounding. Before
operation, be sure that the power supply is well grounded.
To avoid burning out, pay attention to marks of positive and negative
polarities before wiring.
Self-test steps Normal self-test procedures:
1. Correctly connect the power cord. Press [Power] key to start up.
VFD display information is as below.
INIT….
SCAN SYSTEM

Quick Start
Copyright © Itech Electronic Co., Ltd. 11
2. After the power selftest, VFD displays the state of voltage and current as
below.
Error Information References
The following error information may occur when an error occurs during Power
On self-test:
About 1second after power on, if the EEPROM was damaged, the VFD will
display (about 1 S):
If the last power status in EEPROM is lost, then VFD will display
information (about 1 S) as below:
If the calibration data in EEPROM is lost, then VFD will display (about 1S)
as below:
If the factory calibration data in EEPROM is lost, and then the VFD will
display(about 1 S) as below:
Exception handling
If the power supply cannot start normally, please check and take measures by
reference to steps below.
1. Check whether the power line is correctly connected and confirm whether
the power supply is powered.
Correct wiring of power line => 2
Incorrect wiring of power line => Re-connect the power line and check
whether the exception is removed.
2. Check whether the power in On.[ Power ] key is under “ ” On
status.
Yes => 3
No => Please check the [ Power ] key to start power and check whether
the exception is removed.
3. Check whether set power voltage of instrument is larger than the power
supply voltage. If set power voltage is 220 V and the supply voltage is 110V,
the power supply cannot start.
4. Check whether the fuse of electronic fuse is burned out.
If yes, change fuse. Detailed steps:
1) Pull out power line and take out the fuse box at power line jack with a
small screw driver. As shown below.
OFF
0.000V 0.0000A
EEPROM FAIL
SYST LOST
CAL LOST
FACT LOST

Quick Start
Copyright © Itech Electronic Co., Ltd. 12
2) If the fuse is fused, please change fuse of same specification based on
machine model. See the table blow for matching information of fuse
and machine model.
Model
Fuse specification
(110VAC)
Fuse specification
(220VAC)
IT6831A
6.3A
3.15A
IT6832A
IT6833A
IT6835A
6.3A
3.15A
IT6860A
T5A 250V
T2.5A 250V
IT6862A
IT6863A
IT6872A
6.3A 250V
3.15A 250V
IT6873A
IT6874A
IT6832B
6.3A
3.15A
IT6833B
IT6835B
IT6861B
T5A 250V
T2.5A 250V
IT6862B
IT6863B
IT6872B
6.3A
3.15A
IT6873B
6.3A
3.15A
IT6874B
6.3A
3.15A
3) After replacement, install the fuse box back to original position, as
shown below.
2.7 Output Verification
Output verification verify that the power supply outputs the correct voltage and
current levels and properly responds to entries from the front panel.
Voltage Output Check
The following steps verify basic voltage functions without load.
1. Turn on the power supply