NCR IBM 7870 User manual

NCR
7870 Model 2000
IBM Document: NCR 06/97 Doc # NCR001
Page 1of 3Copyright International Business Machines, 1997
All rights reserved
IBM 7870 Model 2000
Specifications
Standard Features
• Bi-Optical (12/12 line) Scan Zone
• Label Configuration Control
• Speaker Volume
• Voice Processor for messages
• Soft power down mode
• 9 pin RS-232 for POS terminals
• NCR Pacesetter plus electronics decoding logic
• Auto-discriminate symbology
• Sealed load cell for scale
• High can reading- 8”above lower glass
Optional Features
• Multiple glass options
Symbologies
• UPC-A,D,E -Universal product code
• EAN - International Article Numbering
• JAN - Japanese Article Numbering
• Code 39 -- Code 3 of 9
• Code 128
• I2 of 5 - Interleaved 2 of 5
• Add-On codes (2 and 5)
• NOF -- Not on file
Programmable Functions
• Scanner Reset Symbol
• Scanner Test Mode Enable/Disable
• Good Tone Frequency and Length Adjust
• Volume Adjustment
• Add-On Code Enable/Disable
• Code 39,128 And Interleave 2 Of 5 Enable/Disable
• Tag Lockout Time Increase/Decrease
• Same Tag Lockout Re-Trigger
• Inactivity Time Or Immediate To Soft Power Down
• Dual Versus Single Cable Communications
• Toggle NCR/Non-NCR Format
• Interface Selection Or Disable Scale Usage
• Slow Power Up For Scale
• Scale Display Zero After Five Seconds
• Weight Timeout Enable/Disable
Dimensions
• 17”h x 19”w x 24”d
Specifications (Continued)
Weight
• Installed: 34 lb.
• Shipping: 40 lb.
Power Supply
• External AC adapter @ 43 watts providing +12VDC,
+5VDC, -12VDC with a 5 Amp maximum.
Tools Requirements
• Flat-Blade Screwdriver
• Certified Calibration Weight Set
• Anti-Static Strap
Special Notes:
• DANGER:- Due to the fact that this is a Class IIa laser
product it is strongly advised to “Avoid long-term
viewing of direct laser light”at all times.
• Scale calibration is generally done after the following:
scale installation, load cell or board replacement, scale
will not zero, calibration error occurs, changing weight
formats from pounds to metric.
• Scale calibration gives better results if the scale is
warmed up prior to the calibration by placing and
removing weights on the scale from 5 to 30 pounds and
then removing them.
• The NCR7870 Model 2000 should not be placed back in
service after it has been repaired or for its initial operation
until a certified field engineer has performed a weight
calibration based on the state and national government
specifications. If the calibration can not be performed
then an “Out of order”must be placed on the unit. A seal
may be also be required in order to validate the calibration
procedure based on government standards in your area.
• NCR Pacesetter Plus has three modes: Inquiry mode
allows scanner to track various information about labels
scanned, Real-Time mode allows off-line tally and checkly
of labels for searching and determining the bad labels
within a given stock of items, Mode 3 is just like Inquiry
mode but it appends the tracking information to the
barcode information so the terminal can extract this
information and add it to a database for reports or for
other tracking needs.
Scale Error Codes
Code Description To Fix It
1- 3 Calibration Failure Chg. Scale Brd/Cell
4Scale error / vibs in calibrate Reset / Recalibrate
5Scale drifting or object in it. Clr. obj. /Reset/ Cal.
6EEPROM Failure Chg. Scale Board
7Board Replaced Recalibrate
8Weight Constants Failed Chg. Digital Brd.
9Interference in calibration Recalibrate
Blank Object in or on it in calibrate Clear object / Reset

IBM Document: NCR 06/97 Doc # NCR001
Page 2of 3Copyright International Business Machines, 1997
All rights reserved
Procedures
Removing Top-Plate and Sub-Plate
• Turn 7870-2000 off, remove power cord and Top-plate
• Lift the scanner cover, then with flat-blade screwdriver
remove attaching screw, which is located on the front-
right face of the Sub-plate assembly.
• Insert screwdriver into slot next to the retaining tab at the
front-left edge of Sub-plate and release the tab.
• Push-up the front-end of the Sub-plate to a vertical
position then pull the back-end out from under the edge of
the Tower Cabinet and lift up and off.
• Remove thumb screw and Scale board shield which is
located just in front and left of the scanning area
Installing Top-Plate and Sub-Plate
• While holding the Sub-plate in a vertical position place the
rear edge under the edge of the Tower Cabinet then bring
the front-edge down until it contacts the mounting
brackets in a horizontal position and retaining tab snaps
into place in the slot within the mounting bracket’s front-
left edge.
• Place scanner’s cover back on Sub-plate assembly and
reinsert the attaching screw into the Sub-plate.
• Place Top-plate back on scale and apply power to verify
the display indicates “Ready 0.00 lb.”
• Reinsert the Scale Board Shield by aligning the shield’s
tabs and attaching the thumb screw again.
Calibrate Scanner
• Do Procedure (Removing Top-Plate and Sub-Plate)
• Temporarily set the Top-plate back on the rubber
bumpers of the scale hinge assembly so the bumpers
reenter the locating sockets
• Apply power to the unit again and perform the following
weight placements on the scale, however, make sure no
vibrations or movements are near scale during this
process.
• Depress and hold Scale Zero switch on panel and note
the CAL and PAR readings then release switch.
• Lift up the top-plate briefly and replace after depressing
the SW1 calibration switch, located underneath the just
removed scale board shield.
• Verify display reads “Ready 0.00 lb.”
• Press Scale Zero switch, display says Ready 5.00 lb.
• Place 5.00 lb. weight on top-plate
• Press Scale Zero switch, display says Ready 15.00 lb.
• Add 10.00 lb. weight on top-plate
• Press Scale Zero switch, display says Ready 30.00 lb.
• Add 15.00 lb. weight on top-plate
• Press Scale Zero switch, display says Ready 0.00 lb.
• Remove all weights and press Scale Zero switch, display
says Scale Ready 0.00 lb.
• Depress and hold Scale Zero switch on panel and record
the CAL and PAR readings then release switch.
• Turn off power to unit and remove the top-plate.
• Do Procedure (Installing Top-Plate and Sub-Plate)
• To verify place three weights separately in the center of
the Top-plate, verify weights are within a .02 offset.
• Place the same weight on 4 different areas on the Top-
plate, verify the weight is within a .02 offset.
Procedures (Continued)
Front Bezel Removal
• Turn 7870-2000 off and remove power cord.
• Locate tower cabinet at rear of scale
• Locate two releases on each side of clear bezel glass
• Pull bezels top edge out and down by pivoting on base
• Disconnect cables to the status LED’s
• Lift Bezel up and out of the tower cabinet.
Front Bezel Installation
• Reinsert new or existing Bezel’s bottom in first.
• Reconnect the status LED’s
• Push back Bezel in place, verify it snapped in position
• Reinsert power cord and restart the 7870 device
Scale Board Replacement
• Do Procedure (Removing Top-Plate and Sub-Plate)
• Disconnect the load cell (J1) and scale (J2) cable.
• Remove the board screw and carefully pry three boards
retainers to release the Scale Board.
• Insert the new board and reapply the board screw.
• Do Procedure (Calibrate Scanner) starting on 2nd step
Digital Board Replacement
• Do Procedure (Front Bezel Removal)
• Jumpers stated are (Digital Board / LC-Digital Board).
• Remove 4 screws from the sides of tower and lift straight
up, disconnect display cable (J5 / J4) if used.
• Remove Indicator cable (J2), Speaker (J4 / J1), Scale
Cable (J3), Video Board (J1 / J5)
• Pull out the digital board in its connector and swap the
firmware in these areas (U19, U22, U26 / U15, U18).
• Reinsert a new Digital or LC-Digital Board.
• Install the Video Brd. cable (J1 / J5), Scale Cable (J3),
Speaker (J4 / J1), and Indicator cable (J2).
• Reconnect any display cables to the tower before placing
tower case back on, tighten the 4 tower screws to hold it
in place.
• Do Procedure (Front Bezel Installation) & (Calibrate)
Fan Replacement
• Do Procedure (Removing Top-Plate and Sub-Plate)
• Do Procedure (Front Bezel Removal)
• Remove 4 screws from the sides of tower and lift straight
up, disconnect display cable (J5 / J4) if used
• Remove ground wire to optics assembly, lift forward, up
and out of unit and place upside-down on table.
• Unplug cable (J6) from video board.
• Squeeze output end of duct and detach then release duct
clips on video board and lift duct over (J6).
• Slide fan out and new fan back in the same position and
make sure cable (J6) is not between duct and fan.
• Reapply the duct clips and connect the end of the duct to
video board by squeezing it in place.
• Reconnect (J6) to video board and place optics assembly
back in unit and tighten ground wire.
• Reconnect any display cables to tower cabinet before
placing it back on then tighten the 4 tower screws.
• Do Procedure (Front Bezel Installation)
• Do Procedure (Installing Top-Plate and Sub-Plate)

IBM Document: NCR 06/97 Doc # NCR001
Page 3of 3Copyright International Business Machines, 1997
All rights reserved
Field Replaceable Units
Top Plates
Description OEM Part IBM Part
Platter Glass Window 497-0300058 20H7833
Plexiglass Window 497-0300220 20H7835
Cables
Description OEM Part IBM Part
IBM 4683 Interface Cable 497-0300400 20H7854
Indicator Reset Cable 497-0300887 20H7838
Load Cell CD To Main 003-0022869 22H4153
Scale Display Cable 497-0300777A 20H7852
Scale Interface Cable 497-0300207 20H7841
Video / Digital Board Cable 497-0300878 20H7847
Printed Circuit Boards
Description OEM Part IBM Part
Digital Board 497-0301692 20H7848
Display - Scale Board 497-0301070 20H7836
IC Chip, PCB Digital Board 006-2005205 22H4154
Interface Board 497-0300723 20H7850
Scale Board 497-0301486 20H7840
Video Board 497-0301675 20H7845
Assemblies
Description OEM Part IBM Part
Complete Unit 7870-2000 7870-2000 20H7760
Laser Cooling Fan Assembly 006-8600435 20H7844
Laser Diode Assembly 497-0300805 20H7846
Optics Assembly 497-0301601 20H7842
Scale Platter Without Glass 497-0301069 20H7832
Spinner Motor 250-0054218 20H7843
Tower Cabinet 497-0900797 20H7837
Miscellaneous
Description OEM Part IBM Part
Front Bezel 497-0300222 20H7834
Inner Platen Cover 497-0300998 20H7855
Load Cell 006-8600466 20H7839
Power Cord 006-1002021 20H7853
Power Supply 006-8700416 20H7851
Pullout Lift Handle 497-0301261 20H7856
Remote Pole Video Display 7870-7825 20H7857
Speaker 006-1010870 20H7849
LED Error Definitions
Power-On LED’s
# Green
Flashes -
Repeats
# Beeps
- then
Repeats
Description of
Errors Replace To Fix
1 - Yes 1 - Yes 7870 Ready None
2 - Yes 2 - Yes RAM Failure Digital Board
3 - Yes 3 - Yes Motor stays on Video Board
4 - No 4 - No No Daughter
Board Detected Digital Brd. or Daughter Brd or
Interface Cable
5 - Yes 5 - Yes Wrong Motor
Speed Spinner Motor or Video Brd.
6 - No 6 - No EEPROM Load
Failure Digital Brd
7 - Yes 7 - Yes No +/- 12V Power Supply
8 - Yes 8 - Yes Laser stays ON Digital Brd. or
Video Brd.
10 - Yes 10 - Yes ASIC Test Fail Digital Brd
11 - Yes 11 - Yes Laser stays
OFF Digital Brd or Video Brd or
Laser Diode
12 - Yes 12 - Yes ROM Failure Digital Brd
13 - Yes 13 - Yes Video Turn
Around Video Brd
Single Operational LED’s
# Green
Flashes -
Repeats
# Beeps
- then
Repeats
Description of
Errors Replace To Fix
3 - Yes 3 - Yes Motor stays on Video Board
5 - Yes 5 - Yes Wrong Motor
Speed Spinner Motor or Video Brd.
8 - Yes 8 - Yes Laser stays ON Digital Brd. or
Video Brd.
11 - Yes 11 - Yes Laser stays
OFF Digital Brd or Video Brd or
Laser Diode
Dual Operational LED’s
# Green
Flashes -
Repeats
# Red
Flashes-
Repeats
Description of
Errors Replace To Fix
1 - Yes 1 - Yes Sleep Mode Scan
Something