Stryker 220-200-000, Service Manual

Page: 18 / 71

16
G. Brightness cannot be adjusted
1. Switch the light source between STANDBY and
RUN modes by pressing on the membrane switch.
(Make sure to use a non-ESST cable, or an ESST
cable that has the ESST adaptor at the tip.)
• If the light source does not switch between
modes, replace the control board (See the
Repair/Replacement section of this manual.)
• If the light source switches between modes, but
brightness cannot be increased or decreased,
proceed to step 2.
2. Remove the jaw handle and the plastic front panel.
Ensure that the front panel membrane is properly
connected to the front LCD display board. Adjust as
necessary.
3. If the membrane is properly connected, but
brightness still cannot be adjusted, replace the
membrane.
4. If the new membrane does not work, check for
proper connection between the control board and
the display board. Adjust as necessary.
5. If the membrane works a  er checking the
connections, replace the front LCD display board
(See the Repair/Replacement section of this
manual.)
H. E-1 error appears on the LCD display
1. Make sure that the light cable is inserted, the bulb
door is closed with a bulb inside, and the lamp is
not lit.
2. Check the voltages on TP22 and TP23.
• If the voltage di
ff
erence between TP22 and
TP23 is not 12V, replace the control board.
• If the voltage di ff erence between these two test
points is 12V, ensure the J3 cable is connected
properly to the ballast and that the individual
wires are not crossed.
- Ensure that L3 and L4 ferrites, located
underneath the J3 connector, are
soldered properly to the control board.
- If these ferrites are missing, broken, or
not soldered properly, repair or replace
the control board.
3. If none of the above steps resolves the problem,
replace the ballast.
I. E-2 error appears on the LCD display
1. Make sure that the bulb is lit and the light is on.
2. Repeat diagnosis strategies B and C, respectively.
J. E-3 error appears on the LCD display
1. Probe TP13 with a multimeter.
• If it reads 3.3 volts, and E-3 still appears on the
display, replace the control board.
• If the voltage on TP13 is low, replace the
ballast.
K. E-4 error appears on the LCD display
1. Verify that the ballast fan is not running.
2. Ensure the ballast fan is connected to the control
board.
3. If the fan seems to be working, visually compare the
speed of the ballast fan to the bulb fan.
• If the ballast fan seems to be running slower,
replace the fan and verify that the E-4 error
disappears.
• If the E-4 error does not disappear with the
new fan, replace the control board.
L. E-5 error appears on the LCD display
1. Check to verify that the bulb fan is not running.
2. Ensure the ballast fan is connected to the control
board.
3. If the fan seems to be working, visually compare the
speed of the bulb fan to the ballast fan.
• If the ballast fan seems to be running slower,
replace the fan and verify that the E-5 error
disappears.
• If the E-5 error does not disappear with the
new fan, replace the control board.
M. Bulb Hours value does not display
1. Connect a regular light cable to the light source.
2. Make sure there is a bulb in the light source, close
the door, and verify that it is lit.
3. Verify that there is a one-wire memory properly
attached.
4. Verify that the one-wire memory is making contact
with the connectors on the bulb mount board.
5. If the bulb does not light, perform diagnosis
strategy A.
6. If you are unsure about the proper contact, insert a
new bulb to see if the hours will display.
7. If the hours still do not display, verify that the cable
between the bulb mount board and the control
board is properly connected.
8. If the cables are properly connected, but the hours
still do not display, replace the control board.