- HP Printer User Manual

ENWW Tray 2/3 paper feed unit 81
MFP unit explanation
2 Signals
a PRCB input signals
3 T1SIZE_S_PS (PS5 to PRCB)
Paper size detection signal (Tray 2)
[L]: Paper does not exist.
[H]: Paper exists.
4 T1SIZE_L_PS (PS6 to PRCB)
Paper size detection signal (Tray 2)
[L]: Paper does not exist
[H]: Paper exists
5 T2SIZE_L_PS (PS11 to PRCB)
Paper size detection signal (Tray 3)
[L]: Paper does not exist
[H]: Paper exists
6 T2SIZE_S_PS (PS12 to PRCB)
Paper size detection signal (Tray 3)
[L]: Paper does not exist
[H]: Paper exists
7 T1SIZE_VR (VR1 to PRCB)
Paper width detection signal (Tray 2)
8 T2SIZE_VR (VR2 to PRCB)
Paper width detection signal (Tray 3)
No paper detection control
No paper in the tray is detected by PS3 (no
paper/1) and PS9 (no paper/2) which are
controlled by the PRCB (printer control
board).
1 Operation
When the tray becomes empty, PS3/9 (no
paper/1/2) is turned off, displaying a
message on the LCD via OB1 (operation
board/1).
2 Signals
a PRCB input signals
1 T1_0PS (PS3 to PRCB)
No paper detection signal (Tray 2)
[L]: Paper does not exist in tray.
[H]: Paper exists in tray.
2 T2_0PS (PS9 to PRCB)
No paper detection signal (Tray 3)
[L]: Paper does not exist in tray.
[H]: Paper exists in tray.
PRCB
DCPS
5V2
S.GND
PS9
5V3
T2_0PS
SGND
PS3
5V3
T1_0PS
SGND