Wyse 160 User manual

Wyse Terminal
160
IBM Document: Wyse 03/97 Doc # 1335W05
Page 1of 3Copyright International Business Machines, 1997
All rights reserved
Wyse Terminal 160
Specifications
Model
• Wyse 160
Emulation
• ASCII
• ANSI
• Tektronix 4010/4014
• Alloy PC-CGA
• PC-99GT graphics w/Hercules
• CGA, EGA, VGA
Standard Features
• Dual session support
• Two serial ports
• One parallel port
• Multiple display formats
• Tilt/Swivel base
• 14”non-glare screen
Dimensions
• 12.7”h x 12.5”w x 12.5”d
• 16.53 Lb.
Power
110/220 VAC @50-60 Hz using 45 watts
Special Notes
• The terminal contains High-Voltage and is extremely
dangerous. Disconnect any power cords when working
on the inside of the terminal with the cover removed.
• Be careful of the CRT face. The slightest crack in the
face could cause an implosion, therefore, causing an
injury. Always work with the neck of the unit facing you.
• When wearing the grounding strap do not connect it to
the terminal directly
• Remember to remove your grounding strap at anytime
when the terminal is to be powered on.
• The Anode lead may still contain a build-up charge after
the power has been removed so avoid touching it until
you are able to discharge it with the removal procedure.
Tools Needed
Assembly/Removal Tools Needed
• Insulated #1 Phillips screwdriver
• Insulated #2 Phillips screwdriver
• Insulated 12”flat-blade screwdriver
• Long-nose pliers
• Test leads
Diagnostic Tools Needed
• Digital multimeter
• High voltage probe
• 150 MHz oscilloscope
• DB-25 Even parallel loopback connector
• DB-25 Odd parallel loopback connector
• DB-25 Serial loopback connector
• 9 Pin loopback connector
Field Replacement Units
Description OEM Part IBM Part
Wy-160 14”Amber Terminal 900373-07 93F5657
Wy-160 14”Green Terminal 900373-01 93F5658
Wy-160 14”White Terminal 900373-04 93F5637
Keyboard Assembly - Ascii 840338-01 93F5659
Keyboard Assembly - Ansi 840338-09 93F5660
Enhanced PC KB Assembly 900242-01 93F5224
Wyse Keyboard 840358-01 93F5661

IBM Document: Wyse 03/97 Doc # 1335W05
Page 2of 3Copyright International Business Machines, 1997
All rights reserved
Removal Procedures
Cables and Cover
• Turn OFF terminal.
• Remove AC cord from rear of terminal.
• Remove any other cables from the terminal.
• Place the face of the CRT on a padded surface.
• Remove (2) two screws located under the operator
control panel on the side of the terminal.
• Push control panel into the terminal case so the controls
do not come through the terminal case.
• Remove (2) two screws from the lower portion of the
terminal back and within each corner.
• Slide cover straight back from face to remove the cover.
Fuse
• Remove the cover as described before.
• Locate the fuse on the printed circuit board inside a
housing just behind the AC power plug.
• Remove fuse by hand or carefully with the pliers using
very little gripping pressure to avoid cracking the fuse.
Anode Cap discharging
• Remove the cover as described before.
• With test leads, connect the terminal’s metal frame to
the flat-blade screwdriver to ground it.
• Place this grounded screwdriver under the circular
anode cap wihich is located on the back of the CRT tube
and touch the spring-clips inside the cap with the blade
of the screwdriver. (This will discharge the CRT)
• At the same time press together the spring-clips using
the pliers and pull the anode cap off.
Operator Control Assembly
• Remove the cover as described before.
• Remove the (Contrast control harness, 3 pin marked
“W401”) from the circuit board.
• Remove the (Power switch harnesses, 1 pin marked
“S2A”and “S2B”) from the circuit board.
• Remove the (Brightness control harness, 3 pin marked
“W202”) from the circuit board
• Unscrew the earth ground wire (Black) from the power
switch bracket
• Remove (2) two screws holding the operator control
assembly to the terminal
Tilt-Swivel Base
• Place the face of the CRT on a padded surface.
• Remove (2) two screws holding the base to the terminal,
They are located at the back of the terminal’s swivel
base
• Slide base to the rear of the terminal to remove it.
Removal Procedures ( Continued )
Main Circuit Board
• Remove the cover as described before.
• Discharge the Anode Cap as described before.
• Cut or remove the strap holding the voltage capacitor to
the left terminal bracket.
• Remove (2) two screws holding the circuit board to the
terminal. The screws are located in the back corners.
• Remove the (Contrast control harness, 3 pin marked
“W401”) from the circuit board.
• Remove the (Power switch harnesses, 1 pin marked
“S2A”and “S2B”) from the circuit board.
• Remove the (Brightness control harness, 3 pin marked
“W202”) from the circuit board.
• Remove the (LED harness, 2 pin marked “P4”) from the
circuit board.
• Remove the (Yoke harness, 3 pin marked “W201”) from
the circuit board.
• Remove the (Keyboard harness, 4 pin marked “P5”)
from the circuit board
• Unplug the CRT harness from the CRT.
• Unscrew the earth ground wire (Green w/yellow stripe)
from the right bracket
• Unscrew the Black grounding wires from the right
bracket.
• Remove the circuit board’s clamp-downs from both sides
• Side the circuit board back and away from the terminal.
CRT Assembly
• Remove the cover as described before.
• Discharge the Anode Cap as described before.
• Remove Operator control assembly as described before.
• Place the face of the CRT on a padded surface.
• Remove (4) screws holding the bezel to both brackets
on each side of the terminal.
• The terminal case should be clear of the CRT tube at
this time, however, verify by disconnecting any
remaining cables from the CRT.
• Remove the case from the actual bezel and CRT.
• Remove (4) screws, located in each of the four corners
of the bezel that hold the bezel to the CRT tube.
• Lift the CRT and slide the bezel out from underneath the
CRT and return the CRT to the padded surface.
Yoke
(Refer to Special Notes before proceeding)
• Remove the cover as described before.
• Remove the (Yoke harness, 3 pin marked “W201”) from
the circuit board
• Loosen the thumbscrew on the CRT neck to loosen the
Yoke lock.
• Slide the Yoke OFF the CRT’s neck very carefully.

IBM Document: Wyse 03/97 Doc # 1335W05
Page 3of 3Copyright International Business Machines, 1997
All rights reserved
Error Codes Description
0Character RAM
1Attribute RAM
2Font RAM
APort 1 RTS to CTS Error
BPort 1 DTS to DSR Error
CPort 1 DTR to DCD Error
DPort 2 RTS to CTS Error
EPort 2 DTS to DSR Error
FPort 2 DTR to DCD Error
KLost Setup (Battery Failure)
PEPROM Checksum
XPort 1 Transmit to Receive Error
YPort 2 Transmit to Receive Error
aParallel Port D0 to D1 (ACK) Error
bParallel Port D2 to D3 (Busy) Error
cParallel Port D4 to D5 (PE) Error
dParallel Port D6 to D7 (Error) Error
LED On/Off
(Constantly) Parallel Port STB (Strobe) Error
DB-25 Even Parallel Loopback Connector
Wiring
From Pin To Pin
2 10
4 11
6 12
8 15
1* 17*
*An LED is installed between pin 1 (cathode side of LED) &
pin 17 (Anode side of LED) of the DB-25 even parallel
loopback connector
DB-25 Odd Parallel Loopback Connector
Wiring
From Pin To Pin
3 10
5 11
7 12
9 15
1* 17*
*An LED is installed between pin 1 (cathode side of LED) &
pin 17 (Anode side of LED) of the DB-25 odd parallel
loopback connector
DB-25 Serial Loopback Connector Wiring
From Pin To Pin
2 3
4 5
6 8
8 20
9-Pin Loopback Connector Wiring
From Pin To Pin
1 4
2 3
4 6
6 9
7 8
Diagnostics
The Power-On diagnostic will display one of the preceding
error codes of (0-2, A-F, K, P, X, Y, a-d) if error is present.
Servicing / Repair
If any part is determined to be non functional or in failure then
the whole terminal is to be issued replaced, however, the
removal procedures are included for reference.
For certified technicians ONLY
If CRT adjustments are needed refer to the preceding
Loopback configurations and the following adjustment
parameters for the appropriate adjustment.
Certified Adjustments
and Specifications Using Test Pattern Point to Adjust
+30.5 VDC
+30.5 VDC ±0.15 VDC
+15 VDC ±0.75 VDC
+ 5 VDC ±0.25 VDC
+ 6.3 VDC ±0.32 VDC
- 6.3 VDC ±0.63 VDC
“M”test
measured at:
Cathode-D113
Cathode-D110
Cathode-D109
U11 PIN 14
U11 PIN 01
VR101
Horizontal Hold
Best display stability Mode 1 Pattern H-sync to Grd. VR201
Display Rotation
“square”to bezel ±1.2mm Mode 1 pattern Yoke
Vertical Center
Centered ≤5 mm Mode 1 pattern Center Rings
Horizontal Center
Centered ≤5 mm Mode 1 pattern VR202
Vertical Size, Mode 1
172 mm ±5 mm Mode 1 pattern VR302
Vertical Size, Mode 2
172 mm ±5 mm Mode 2 pattern VR301
Vertical Size, Mode 3
172 mm ±5 mm Mode 3 pattern VR304
Vertical Linearity
Correct linearity (10% /better) Mode 1 pattern VR303
Horizontal Size
237 mm ±5 mm Mode 1 pattern L201
Sub-Brightness
1fL (+ 0.4-0.2) Mode 1 pattern VR204
Sub-Contrast
White 45 fL (+ 7-3)
Green 70 fL (+ 7-3)
Amber 32 fL (+ 7-3)
“M”pattern VR402
Focus - Optimum focus “M”pattern VR203
Pincushion
Least pincushion distortion
of ( ≤2.5 mm)
Mode 1 pattern Yoke
Magnets