Toshiba DP120F Service Manual page 383

• I/OP-2 GA Signal Table
No. Signal Name
64-66 STA1-3
67 PCLSET
68 AU1SET
69 MDSEL
70 RESETX
72 HLEAO
73 PWRSVNACK
74 LEDBLK
75 PWRSVACK
76 G/PSEL
77 PM22PLL
78 SHENA
79 HCTR6
80 G1HZ
I: Input O: Output
DP120F/DP125F Circuit Description
(4/4)
Type
I Optional recording paper tray status 1-3 signals
Detects the status of the optional recording paper tray.
STA3 STA2
LOW
LOW
LOW
LOW
HIGH
HIGH
HIGH
HIGH
I GA-1020 detect signal (L: Installed)
Detects the connection status of the GA-1020 (PCL
PBA).
I NIC detect signal (L: Installed)
Detects the connection status of GF-1010 (NIC/Re-
lay PBA) and GD-1040 (IFAX PBA).
- +5V
I Reset signal (active-low)
Resets the system.
- Unused
O Power save non-acknowledge signal
Indicates restoration from the power save mode to
the Sub-CPU (IC37).
O Power save LED blinking signal
Requests the Sub-CPU to blink the power save LED.
O Power save acknowledge signal
Enables the Sub-CPU to transit to the power save
mode.
O GDI/PCL select signal (up edge trigger)
Switches from GDI to PCL.
O CODEC circuit start signal (active-low)
Starts the CODEC (IC51) circuit.
O LSU sample hold signal (H: Hold, L: Sample)
Samples or holds the LED output of the LSU.
- Unused
- Unused
I/O: Bidirectional
Functions
STA1
LOW LOW
LOW HIGH
HIGH LOW
HIGH HIGH
LOW LOW
LOW HIGH
HIGH LOW
HIGH HIGH
7-74
Status
No recording paper tray
No recording paper
Paper size LT
Response signal
Paper size A4
Undefined
Paper size LG
No optional recording
paper tray, reset state
March 2000 © TOSHIBA TEC