Ricoh LANIER MP 301SP, Service Manual

Page: 461 / 553

Bit Switches
SM Appendix 5-9 D127/D128
A
ppe
n
dix
:
Fa
x
T
rou
ble
-
S
h
oo
ting
Gu
ide
e.g. 0000 (1) // 32 (2) V34 (3) // 288 (4) // 264 (5) // L0100 (6) 03 (7) 04 (8)
(1): EQM value (Line quality data). A larger number means more errors.
(2): Symbol rate (V.34 only)
(3): Final modem type used
(4): Starting data rate (for example, 288 means 28.8 kbps)
(5): Final data rate
(6): Rx level (refer to the note after this table for how to read the rx level)
(7): Total number of error lines that occurred during non-ECM reception.
(8): Total number of burst error lines that occurred during non-ECM reception.

EQM and rx level are fixed at “FFFF” in tx mode.

The seventh and eighth numbers are fixed at “00” for transmission records
and ECM reception records.
Rx level calculation
Example: 0000 // 32 V34 // 288/264 // L 01 00 03 04
The four-digit hexadecimal value (N) after “L” indicates the rx level.
The high byte is given first, followed by the low byte. Divide the decimal value of N
by -16 to get the rx level.
In the above example, the decimal value of N (= 0100 [H]) is 256.
So, the actual rx level is 256/-16 = -16 dB
3 Not used Do not change this setting.
4
Line error mark print
0: OFF, 1: ON (print)
When "1" is selected, a line error mark is printed
on the printout if a line error occurs during
reception.
5
G3/G4 communication
parameter display
0: Disabled
1: Enabled
This is a fault-finding aid. The LCD shows the key
parameters (see below). This is normally disabled
because it cancels the CSI display for the user.
Be sure to reset this bit to 0 after testing.
6
Protocol dump list output after
each communication
0: Off
1: On
This is only used for communication
troubleshooting. It shows the content of the
transmitted facsimile protocol signals. Always
reset this bit to 0 after finishing testing.
If system switch 09 bit 6 is at “1”, the list is only
printed if there was an error during the
communication.