Table of Contents
Advertisement
5. Communication is normal when the built-in SCSI terminator is turned ON.
Communication is not normal when the external terminator is connected. (UP-D2600S only)
<Cause>
Fuse F201 of a terminator power supply line may be damaged when the
external terminator is not defective.
<Countermeasure>
Replace the fuse F201.
Whether the F201 is broken or not, you cannot judge by your eyes.
6. Printing operation is NG.
<Countermeasure>
The cause can be ascertained by performing the mechanical adjustments
sequentially. (Refer to Section 3-6)
Point on Output System (Print)
The PP IN signal on the PRT-11 board is the signal that is risen every print line output from CPU on the
PRT-11 board. The print data request signal PDREQ to the IF-787 and IF-788 boards is output (fallen)
every line. When receiving the necessary data, the PDREQ signal rises.
The print data from the IF-787 and IF-788 boards is synchronized with the FDCK signal and output.
PRT-11 PP_IN (TP216)
IF-787, 788 PDREQ (TP227)
PRT-11 FDCK (TP209)
PRT-11 PP_IN (TP216)
IF-787, 788 PDREQ (TP227)
PRT-11 FDCK (TP209)
6-2
Expanded
5.48 ms (line period)
Timing is changed for each line.
The number of FDCK rising
is changed by print data.
PRT-11 FDCK (TP209)
PRT-11 FD 0 through 7
(TP201 through 208)
Expanded
508 ns
UP-D2600/V1(E)
Advertisement
Table of Contents
