5
4
.
1
.
2
ROM
................................................................. 30
4
.
1
.
3
Internal Battery
........................................................ 30
4
.
1
.
4
Barometric Pressure Sensor (option)
..................................... 30
4
.
1
.
5
Built-in Clock board (option)
............................................. 30
4
.
2
Replacement of Test Unit Components
....................................... 31
4
.
2
.
1
Temperature Sensor
................................................... 31
4
.
2
.
2
Flash Detector
......................................................... 32
4
.
2
.
3
Heater Block
.......................................................... 32
4
.
2
.
4
Photo Micro Sensor
.................................................... 34
4
.
2
.
5
Electric Igniter
......................................................... 34
4
.
2
.
6
Interchange of the Ignition Source (Gas
Æ
Electric)
......................... 35
Appended Fig. 1 Control Unit Parts Position
Appended Fig. 2 Test Unit Parts Position
Appended Fig. 3 Control Unit Wiring Diagram
Appended Fig. 4 Test Unit Wiring Diagram