Canon iR3245, Service Manual

Page: 312 / 746

Chapter 10
10-10
10.4.2.2 Rated Output of the 12V Power Supply PCB
0019-0032
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
T-10-10
10.4.2.3 Rated Output of the Option Power Supply PCB
0019-0033
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
T-10-11
10.4.2.4 Rated Output of the All-Night Power Supply PCB
0019-0035
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
T-10-12
10.4.3 Protection Function
10.4.3.1 Protective Functions
0019-0036
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
The DC power supply PCB and the power supply PCB for each option in this equipment have protective functions against overcurrent and overvoltage which cuts
automatically the output voltage to prevent malfunction of the power supply circuit when a fault such as short circuit occurred on a load causes overcurrent or ab-
normal voltage.
When an abnormality occurs in 3VB (all-night power supply), all power supplies are cut.
When an abnormality occurs in other power supplies than the above, all power supplies but 3VB (all-night power supply) are cut.
If an abnormality occurs in 3VB (all-night power supply), turn off the main power switch of the printer assembly, eliminate causes for activation of the protective
circuit, and then replace the all-night power supply PCB (because the fuse of the all-night power supply PCB has burned out.)
For other cases than that, turn off the main power switch of the printer assembly, eliminate causes for activation of the protective circuit, leave it for approx. 3 min
or more, and then turn on the power again to reset the protective circuit.
10.4.4 Backup Battery
10.4.4.1 Backup Battery
0019-0037
iR3225 / iR3225N / iR3235 / iR3235N / iR3245 / iR3245N
The main controller PCB for this equipment contains a lithium battery as a backup battery for various data in case that a blackout occurs or the power plug is dis-
connected.
The DC controller PCB does not contain a battery.
T-10-13
Name of output 12VA
All night/non-all night Non-all night
Rated output 12.3 V
Tolerance -/+ 4 %
Name of output 24VA
All night/non-all night Non-all night
Rated output 24.0 V
Tolerance
+5 %, -4 % (For 0.1 to 6.5 A)
+8 %, -6 % (For 0 to 12A)
Name of output 3VB
All night/non-all night All night
Rated output 3.4 V
Tolerance -/+ 3 %
Type of battery Lithium battery (3V, 1000mAh)
Life of battery Approx. 8.8 years (in the state that a power plug is disconnected)
Replacement of battery A battery should not be replaced in a field where service tasks are performed.
Incorrect replacement of a battery may cause an explosion.
Do not use other batteries than those specified by a manufacturer (same type or equivalent).
Be sure to dispose a replaced battery according to the instruction by the manufacturer.