T-K3 Service Manual
Ver. 1.05
28
CONFIDENTIAL
10-16. Tran sfo rmer
T-K3 Part #
#702
Takagi Part #
EKH09
Checkpoint
A1, A2
Function
Failure event
Effects on the T-K3
if transformer fails
Error codes when
transformer.
Diagnostic
White -Black
Brown-Brown
-To transform input voltage from 120VAC to 100VAC.
-Every electrical component of the T-K3 is designed to only work with a 100VAC
power supply, therefore, the T-K3 comes equipped with this transformer.
120VAC / less than 1
Ω
N/A
Color/Number of
wires
1. Visual inspection: connection/breakage of wires and/or signs of electrical
damage.
2. Check voltages of the transformer: Proper range of values shown below.
100VAC / less than 1
Ω
1. There is no power coming from the transformer.
2. The voltage from the power supply cannot be converted to 100VAC.
1. The T-K3 does not operate due to lack of power from transformer.
2. A failed transformer can cause electrical damage to other electrical components
within the T-K3.
From the 120 VAC
power supply
To power the computer
board and heaters
(100VAC)
2 - 3 / 8 " ( 6 1 m m )
2-3/
4"
(7
0mm)
1-1/
2"
(3
7mm)
3 - 3 / 4 " ( 9 4 m m )
5 - 7 / 8 " ( 1 5 0 m m )
5 - 7 / 8 " ( 1 5 0 m m )
