NCR 7150 User manual

NCR Printer
Model 7150
IBM Document: NCR 05/97 Doc # NCR003
Page 1of 2Copyright International Business Machines, 1997
All rights reserved
NCR 7150 POS printer
Specifications
Standard Features
• Solenoid retractable platen
• Receipt / Slip / Journal printing
• Bi-directional slip motor
• Power-ON self tests
• Journal take up roll
Optional Features
• Cut-sheet and detector
Print Features
• 9 pin print head
• Bi-directional print direction
• Font select -(7 x 9 or 9 x 9)
• 42 or 46 character per line.
• 200 lines per minute
• Near-end of roll detection switch
Tools Required
• Phillips (xCELITE x100)
• #2 Posi-drive screwdriver
• 5/32”Flat-blade screwdriver
• 5.5 MM Hex Nut driver
• Feeler gauges
• Allen Wrenches
90 Degree,
3/32”,
5/64”,
1.5 MM.
Jumper/Switch Settings
Diagnostic Options S4 S3 S2 S1
Receipt ASCII Dump 0 0 0 1
Journal ASCII Dump 0 0 1 0
Slip ASCII Dump 0 0 1 1
Knife Cut 0 1 0 0
Loop On Lever 0 1 1 0 0
Power-On SelfTest
Setup For All Tests
• Make sure a ribbon cassette is installed
• Load proper paper for the test you desire in the printer.
• Close all covers on the printer.
• Perform your desired test listed below.
Receipt Paper
• Press Receipt Feed button and hold
• Press the Reset button then release both buttons
• Printer will print a test pattern, check the bi-directional
feed, and if available do a partial and full knife cut.
Journal Paper
• Press Journal Feed button and hold.
• Press the Reset button then release both buttons
• Printer will print a test pattern if paper loaded.
Slip Paper
• Press Receipt and Journal Feed buttons and hold
• Press the Reset button then release all buttons
• Printer will print a test pattern if paper is loaded.
Conclusion For All Tests
• Since the Receipt and Journal print continuously without
stop then the reset button has to be depressed again to
stop the test.
Field Replaceable Units
Description OEM Part IBM Part
7150-7001-9001 Printer 7150-7001-9001 22H3354
Switch-Snap Action 006-1050199 22H3355
Core - Take Up 189-1051983 22H3356
Core - Paper Supply 189-1052974 22H3357
Slip Sensor Assembly 189-1053854 22H3358
Receipt Guide-Non Knife 189-1054915 22H3359
Platen Assembly 189-1055024 22H3360
Print Head 189-1055991 22H3361
Ribbon Guide 189-1056571 22H3362
Blade - Tear Off 189-0213500 22H3363

IBM Document: NCR 05/97 Doc # NCR003
Page 2of 2Copyright International Business Machines, 1997
All rights reserved
Special Notices
• Do not allow printer to print data or a self test without
having a ribbon and paper installed, because damage
will occur to the print-head of the printer.
• Do not use thinner or benzene cleaners because this
could deform the plastic parts of the printer.
• Removal of the receipt / slip motor is not recommended
as a field engineer since the motor tabs break quite
easily thus destroying the whole assembly.
• When handling the heat-sink for the print-head jewel be
careful when changing the ribbon because the heat-sink
has a fragile hinge and it breaks off easily.
• The Ohm charge for all the wires to the print-head pins
must be a minimum of 19 ohm between each print wire
and common
• Never lubricate the Journal Take-up Clutch since this is
a friction type clutch.
• If an excess of Ribbon Fluff or debris is detected then
this could mean a bent Print Wire or incorrect platen size
platen.
Adjustments
Journal Exhaust Switch
• Lift journal box assembly and depress the micro-switch,
this switch will depress and stop allowing a 1/32”
opening in the height of the paper chute. Paper may
bind if the opening is smaller while may not be sensed
correctly if the opening is larger then 1/32”.
• Adjust from bottom of printer with a 5/64”Allen wrench.
Journal Platen Gaps
• Install ribbon cassette in printer with no paper.
• Move Print Carriage to the left of the journal print area
and adjust screw until a .013 ±.002”gap is obtained.
• Move Print Carriage to the right of the journal print area
and adjust screw until a .013 ±.002”gap is obtained.
• Install paper and test.
Receipt and Slip Platen Gaps
• Install ribbon cassette in printer with no paper.
• Move platen to rear of printer and into receipt mode.
• Move print carriage to the left of the Receipt print area
and adjust screw until a .013 ±.002”gap is obtained.
• Move print carriage to the right of the Receipt print area
and adjust screw until a .013 ±.002”gap is obtained.
• The slip platen gap is already done since the platen is
the only thing that switches between them.
• Install paper and test.
Slip Guide Widths
• Loosen the Allen screw and slide the three plates
around. Bottom plate for the narrowest slip, the middle
plate for the medium slip and top plate for widest slip.
• Tighten Allen screw into place and test.
Procedures
Replace Driver Board
• Turn OFF the Printer. Never replace this board when
there is power to the printer.
• Locate the driver Board and loosen the Phillips screw on
the same side as the black plastic plate.
• Push in on both tabs in the front and lift board up board
to expose the cables connections.
• Disconnect all cables and note their locations
• Replace board and reconnect the cables and reseat the
card. J2 & J4 on the boards is the same jumper.
• Reinstall the Phillips screw to secure the board.
• Turn ON the Printer.
Replace Ribbon Cassette Or Print-Head
• Turn OFF the printer and unplug power cord.
• Move print-head to left side of the Journal print area.
• Carefully swing Heat-Sink on its hinge up and to right.
• Locate Ribbon Cartridge between the head and guide.
• Release the Ribbon Cartridge by pulling it up and out.
• Release the Print-Head by pulling it up and out.
• Check Print-Head for its Ohm level. If the Ohm(s) are
below 19 Ohms then driver board will need replacing.
• Place back the new or old Print-Head
• Place back the new or old Ribbon Cartridge. Make sure
the ribbon passes between the nose of the Print-Head
and the metal ribbon guide.
• Flip back the Heat-Sink into place and spin the knob on
the ribbon cassette to tighten the ribbon.
• Plug in power cord and turn ON the printer.
Replace Ribbon Guide
• Turn OFF the printer and unplug power cord.
• Locate and remove the ribbon cassette
• Locate Ribbon Guide, located at center of Print-Head.
• Unsnap the Ribbon guide from the Print-Head area.
• Install a new Ribbon Guide with diamond shape down.
• Plug in power cord and turn ON the printer.
Replace Ribbon Drive Assembly
• Turn OFF the printer and unplug power cord.
• Locate Ribbon Drive Gear, in front left of the printer.
• Lift the Ribbon gear up and tilt it to the front of printer.
• Check the gear teeth for wear or damage
• Remove “C”clip from left belt pulley and remove the
flange, pulley and pivot link.
• Exchange with the new Ribbon gear now if desired.
• Start adding the pivot link, pulley’s and flanges back to
the Ribbon drive gear and replace the “C”clip.
• Reinstall Ribbon gear back in printer
• Plug in power cord and turn ON the printer.