Cateye No Display on Control Unit after Power on, EC-1200 EC-1600 EC-3600 EC-3700

			Applicable Models:	EC-1200	EC-1600	EC-3600	EC-3700
T-1	No Display on Control Unit after Power ON. (1)
	Check Method of Causes	Repair Method	Explanation Figures

Check the power is available at the wall socket before proceeding to		Normal for 14V thru 19V
checking of causes.
[1] Checking the AC Adapter		Red Cable
1. Detach the plug of AC adapter from the AC adapter inlet of the		DC Connector
main unit.
2. Connect the wall socket plug of the AC adapter to the wall
socket.			Cable Connector
3. Using a tester, measure the voltage at the plug which will be
connected to the main unit. (Fig. 1)		Black Cable
t The AC adapter will be working fine, if the voltage is minus
(-) at the inner area and plus (+) at the outer area of the
connector and also the meter reading is in the range of 14V
and 19V.	Fig. 1		Fig. 2
t When the measured voltage is 0V, or less than 14V, the
	Replace the AC adapter.	Normal for 14V thru 19V
AC adapter will be defective.
Note: Never short-circuit the plug of AC adapter. This will
damage the AC adapter.		Black Cable	Red Cable
[2] Checking the Wiring within the Frame
1. When the AC adapter is found to be correct, proceed to
checking of wiring within the frame. Loosen the four screws			Terminal
on the handlebar stem to remove the control unit. (Fig. 2)
			3 (+)
2. Remove the 5P cable which is connected to the back of the
control unit. (Fig. 2)
3. Connect the AC adapter, and turn on the main unit.		5P Cable

4. Using a tester, measure the voltage across the terminals 1 (-)		Terminal 1 (-)
and 3 (+) of the 5P cable. (Fig. 3)
t The main unit side will be working fine if the meter reading	Replace the control unit.	Fig. 3
is in the range of 14V and 19V. This means the control unit
will be defective.

Cateye Ergociser Series 1000 Service Manual

T-1No Display on Control Unit after Power ON. (1)

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