AGFA Avantra 36/44 Service Manual page 398

• X600–Power supply input
10V AC and 18V AC from the secd. of the transformer.
• X400, RS-232 ATB–Data communication link between the LCB pcb and the
Agfa Terminal Board (ATB) power supply.
Connections:
-1/2 connected to the ATB L3-1 and L3-2 serial data codes
-3 connected to the ATB L3-3 12V DC
-4 connected to the ATB L3-4 ground
-5 connected to the ATB L3-5 18V AC
• X402, RS-232 OLP Com.– (Only used with the OLP version) Data communi-
cation link between the LCB pcb and the imagesetter via L4.
• X200, Output–digital output. Output is constructed as open collectors
(active = low). The necessary driving voltage (+12V) is sourced from the
LPB pcb.
Connections:
-1 connected to the LPB X1-4 control the K9
-2 connected to the LPB X1-5 control the K8
-3 connected to the LPB X1-6 control the K7
-4 connected to the LPB X1-7 not used
-5 connected to the LPB X1-8 control the Q3
-7 connected to the LPB X1-10 control the Q1
-8 connected to the LPB X1-11 control the K12
-10 connected to the LPB X1-2 control the K11
-11 connected to the LPB X1-3 control the K10(
-12 connected to the LPB X7-2 control the Q4 & Q6 via X1-12
-13, -6 connected to the LPB X1-9 related to K2
-18 connected to the LPB X1-13
-21/22 connected to the LPB X1-1
• 2, LUTH Power Board (LPB)–The LPB switches the necessary 220 V com-
ponents on and off. The Triac board includes 5 long-life zero-crossing Triac
channels and 7 power relays with noise suppression circuits across the
contacts. Because the replenishment pumps operate on half-wave rectified
AC, two diodes are mounted at the appropriate relays.
Section IV: On-line Processor
(Fix. repl. pump)
(Dev. repl. pump)
(Dryer fan and basic
heat)
Q5
(Fix heat 1500W)
(Dev heat 1500W)
(Drive motor)
(Circ. pumps)
Aqua stop sol.)
(not used)
Ground
12V DC
Functional Analysis 2-5