Oki IP-6620 - 5.5.20 System Error 190 x: Power Supply Unit Error

OKI Data Infotech Corporation CONFIDENTIAL
Chapter 5 Troubleshooting (Engine Section and USB Controller Section)
5-95
5.5.20 System Error 190x: Power Supply Unit Error
<Description>
Voltage errors are detected when the following power voltages are checked.
X
Board
Power name
Power supply
system
Reference
0
PCB-ASSY-ACT3
P12V
PSU38V  ACT3
－
1
PCB-ASSY-ACT3
P24V
PSU24V  ACT3
－
2
PCB-ASSY-ACT3
P24VAR
PSU24V  ACT3
The power is cut by the interlock
3
PCB-ASSY-ACT3
P24VSF
PSU38V  ACT3
－
5
PCB-ASSY-ACT3
P38V
PSU38V  ACT3
－
6
PCB-ASSY-ACT3
P38VAR
PSU38V  ACT3
The power is cut by the interlock
7
PCB-ASSY-ACT3
P38VAF
PSU38V  ACT3
－
8
PCB-ASSY-IPB5-100
P38VAF
PSU38V  ACT3 
IPB5
－
9
PCB-ASSY-IPB5-100
P38VCRG
PSU38V  ACT3 
IPB5
The power is cut by the interlock
A
PCB-ASSY-ACT3
P38ARHCB
PSU38V  ACT3 
HCB1M
The power is cut by the interlock
* For the details of the power supplies’ relationship, see the Appendix 3 Power Supply Schematic Diagram.
<Faulty part>
(1) PCB-ASSY-ACT3
(2) PCB-ASSY-IPB5-100
(3) Power supply unit (24V) (PSU 24V): POWER SUPPLY 24V, MW
(4) Window sensor OKI Data Infotech (interlock switch)
(5) Power supply unit (38V) (PSU 38V): POWER SUPPLY 36V, MW
Note:
If the PSU 38V output is cut, the power of the CPU and the peripheral circuits is also cut on the
PCB-ASSY-IPB5-100, preventing this error from occurring. Therefore the error 190X is rarely caused by
a PSU 38V problem.