
6–22
ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS
a. Guide to the LED Indications on the
Protocol Controller PCB
Power-On
If all LEDs are ON, the power supply has
started normally.
About 10 Sec Later
If the 1st (LED0) from the right is OFF, a
memory check on the protocol controller PCB
has ended.
About 10 Sec Later
If the 2nd (LED1) from the right is OFF, com-
munication has started with the image proces-
sor PCB.
About 10 Sec Later
If the 3rd (LED2) is OFF, communication has
started with the Printer Board (an internal
check signal of the Printer Board has been
received).
About 10 Sec Later
If the 4th (LED3) is OFF, communication has
started with the NIB (an internal check signal
of the NIB has been received; remains ON if
the NIB is not installed).
b. Results of Self Diagnosis Indicated by
LEDs
LED0, LED1, LED2, and LED3 flash alternate-
ly in specific combinations.
c. Downloading
At time of downloading, the LEDs repeat
flashing starting with the rightmost LED.
6. Protocol Controller PCB
Figure 6-614
J509
J508
J501
LED3 LED1
LED2 LED0
J506
J505
J201
J200
J1
Summary of Contents for GP215
Page 4: ......
Page 36: ......
Page 38: ...3 2 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 39: ...3 3 TROUBLESHOOTING IMAGE PROBLEMS ...
Page 40: ...3 4 B Image Fault Samples ...
Page 80: ......
Page 92: ...6 6 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS C Fans Figure 6 603 FM6 FM5 FM2 FM3 FM1 FM4 ...
Page 105: ...6 19 ARRANGEMENT AND FUNCTIONS OF ELECTRICAL PARTS 3 Composite Power Supply PCB Figure 6 610 ...
Page 204: ...C GENERAL CIRCUIT DIAGRAM General Circuit Diagram 1 4 A 3 ...
Page 205: ...General Circuit Diagram 2 4 A 4 ...
Page 206: ...General Circuit Diagram 3 4 A 5 ...
Page 207: ...General Circuit Diagram 4 4 A 6 ...