Panasonic UF-490 Service Manual page 51

CN8
SC PCB
Signal Name
Pin No.
CN8-1 +24V
CN8-2 N.C.
CN8-3 nFNRDT
CN8-4 MGND
CN9
SC PCB
Signal Name
Pin No.
CN9-1 nSTB
CN9-2 DATA0
CN9-3 DATA1
CN9-4 DATA2
CN9-5 DATA3
CN9-6 DATA4
Destination
Fan
Fan
Fan
Fan
Destination
CENTRONICS
I/F
CENTRONICS
+5V(H)
I/F
0V(L)
CENTRONICS
+5V(H)
I/F
0V(L)
CENTRONICS
+5V(H)
I/F
0V(L)
CENTRONICS
+5V(H)
I/F
0V(L)
CENTRONICS
+5V(H)
I/F
0V(L)
Signal Waveform
+24V
Signal Waveform
+5V
51
Function
+24 VDC Power Supply
Not Used
Fan Ready Signal
+5V
H: Not Ready
L: Ready
0V
Ground
0V
Function
Host Clock / Data Transfer
Strobe
(Host→Peripheral)
0V
Data Signal
Data Signal
Data Signal
Data Signal
Data Signal