Toyotomi Laser 60AT Manual page 34

L A S E R H E A T I N G
Section 6
6-1 ELECTRICAL SYSTEM
S Y S T E M S
Trouble Shooting
Resistance Values
COMPONENT Laser 60AT
Igniter (connector G) at cold condition (73˚F (23˚C))
Transformer Primary Side (connector K)
YL & YL
Secondary Side
BL & BL
Circulation Fan Motor (connector C)
Combustion Blower Motor (connector E)
Thermistor (connector 2 at 77˚F (25˚C))
Fuel Pump (coil)
Component Voltage Readings
COMPONENT READING TAKEN AT Laser 60AT
Fuel Pump OR to BL (A on PCB) DC 107V
Igniter G on PCB AC 120V
Trans- Primary Side K on PCB AC 120V
former Secondary Side YL to YL AC140V
BL to BL AC 14V
Circulation Fan Motor C on PCB High AC 118V
Motor Medium AC 93V
connected Low AC 34V
Combustion Blower Motor E on PCB High AC 98V
Motor Medium AC 75V
connected Low AC 67V
Combustion Blower Motor RD (+) to BL (-) DC 5V
Revolution sensor (CN 12) WH (S) to BL (-) (in operation) DC 2.5V
S E R V I C E M A N U A L
17
87
470
1.4
450
12
10K
675
31