Troubleshooting
ESI SCR: Upper display fails to light when START is pressed.
60
6.19. ESI SCR: Upper display fails to light when START is pressed.
NOTE: USE THIS FOR DIAGNOSING ESI-SCR BOARD
Error Code: No power to the upper console
Upper display fails to light when START is pressed:
If you have no power to the upper console, use a
voltmeter to measure AC voltage from the outlet.
(120 VAC for 110-V Treadmills)
(207 VAC for 220-V Treadmills)
Do you have proper voltage at the outlet?
Check and reset the facility
breaker.
NO
YES
Check the linecord for damage, frayed, or crushed.
With a voltmeter check the voltage at the linecord for proper
AC voltage at the end of the plug to the motor pan.
Do you have proper voltage at the linecord?
Replace the
PWM Linecord
(110-V Linecord P/N 70530)
(220-V Linecord P/N 70531)
NO
Test linecord connector w/ switch by following the step below:
Connect your
RED
test lead from your voltmeter to the
BROWN LINE
wire connector on the lower board.
Connect your
BLACK
test lead into the
BLUE
NEUTRAL
wire connector on the lower board.
(120 VAC for 110-V Treadmills) (207 VAC for 220-V Treadmills)
WITH THE VOLTMETER, DID YOU MEASURE PROPER AC VOLTAGE AT THOSE TWO WIRES?
YES
Is the
GREEN VAC PWR LED 9
lit on the
lower board?
(#18 ON ESI-SCR LOCATOR SHEET)
Replace the
Linecord Connector w/ Switch.
(P/N 70861)
YES
N
O
Is the
GREEN +12VDC LED 1
lit on the lower board?
(#1 ON ESI-SCR LOCATOR SHEET)
YES
Perform a connuity test on the in-line fuse. If the fuse is bad
replace it with a 15 amp slow blow fuse.
DID THE GREEN VAC LED 9 LIT UP AFTER REPLACING THE FUSE?
(P/N MDA-15 SLOW BLOW FUSE)
(IF FUSE BLOWS FOLLOW THE BLOWN FUSE FLOW CHART)
N
O
YES
Is the
GREEN +5 LED 2
lit on the lower
board?
(#2 ON ESI-SCR LOCATOR SHEET)
N
O
N
O
Replace the
Lower Board.
(110-V Lower Board P/N 70080)
(220-V Lower Board P/N 70081)
Is
RED SERIAL LED 5
Lit on the board?
(#5 ON ESI-SCR LOCATOR SHEET)
Replace the
Display
Board.
YES
YES
1) Unplug the upper harness wiring harness from the lower board and inspect all
the wires for any crimped, frayed, broken or loose wires. Be sure that the
harness is routed underneath the elevation motor and secured on the plastic
clip.
2) Unplug the upper harness from the display board and inspect all of the wires
for any loose wires or push pins. With a voltmeter, check for proper voltage
check from the
GREEN
&
BLACK
wires for
+12 VDC
or better.
3) Conduct a membrane bypass test by jumping the ground and start pins on the
display board with your voltmeter set on continuity setting.
DID THE DISPLAY BOARD POWER UP AFTER YOU CONDUCTED THE MEMBRANE BYPASS
TEST?
Replace the
Membrane
Panel.
N
O
N
O
YES
YES
Содержание L7 Club
Страница 1: ...L7 L8 L9 Treadmill 90 Series Service Manual...
Страница 4: ...Grounding Instructions 4...
Страница 16: ...Introduction Recommended Tools 16...
Страница 26: ...Electrical Reference Harnesses 26...
Страница 30: ...Routine Maintenance Maintenance Checklist 30...
Страница 102: ...Replacement Parts 102 Figure 8 8 Control Panel 17 16 15 13 14 12 11 11 9 5 3 7 6 2 4 8 1...
Страница 116: ...Replacement Parts 116...
Страница 119: ......
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