Siemens Saturn Iie Epabx General Description Manual

							SATURN IIE EPABX 
Maintenance and TroubleshootIng A30808-X5130-DllO-l-6920 
Issue 1, May 1986 
I 
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5. Memory Support Module (MSM). The MSM is an 
optional module which provides +SVdc (+5VB) 
with internal battery back-up for the memory chips 
in the memory (MEMS and MEM4) PCBs in the 
common equipment section of the Basic Shelf. The 
MSM contains a linear regulator and battery charg- 
er, a battery, and sensing circuits to detect power 
failure, battery overvoltage, and battery failure. Pro- 
tection for output overvoltage, whether due to an 
externally applied overvoltage or due to an inter- 
nal fault, is provided by means of a crowbar and 
output disconnect circuit. If the protection circuit 
is activated, clear the fault condition and then 
switch the BASIC PS circuit breaker on the PSU 
off (down) and then on (up) again to restore the 
+5VB output. 
Upon removal of the fault condition causing exces- 
sive output current, normal output capability is au- 
tomatically restored. 
The battery contained in the MSM is a standard 
sealed plug-in assembly which may be removed 
and replaced from the front of the Basic Cabinet 
by removing the PSU front panel. A BATTERY 
TEST switch and associated green LED are mount- 
ed on the front of the MSM and are visible through 
openings in the PSU front panel. A red LED (ON 
BATTERY POWER) mounted on the front of the 
MSM and also visible through the PSU front panel 
indicates whether the memory integrated circuits 
(ICs) in the memory PCBs are being powered from 
the internal MSM battery. 
b. -48Vdc Power Supply (-48PS0, -48PSl). The -48PS 
module is a ferroresonant transformer power supply 
which provides talking battery voltage (-48VB) and 
oremium -48Vdc (-48VP) for the Basic and LTV Shelves. 
ihe -48VP outpui is used for powering the RGEN mod- 
ule (in the PSU) and the SDTs and attendant consoles 
via SLMD and PIMD PCBs, respectively. The -48Vf3 
output is derived from the -48VP voltage, after addi- 
tional filtering, and is used for talk battery to the SLMA- 
0, SLMA-S, and SLA16 modules. 
Because of its ferroresonant transformer design, the 
-48PS has inherent output voltage limiting and is capa- 
ble of supplying a considerable output current over- 
load without damage (although the output voltage will 
decrease). It contains a thermal cut-off switch to pro- 
tect against overheating due to excessive output cur- 
rent overload or an internal fault. This thermal cut-off 
switch will operate and remove power from the power 
supply if the ferroresonant transformer overheats. Shut- 
down due to an overvoltage condition causes the power 
supply output to latch off. To unlatch the power supply 
output and resume normal operation, clear the fault 
condition and set the associated input circuit breaker 
(-48PS0 or -48PS1, located on the PSU front panel) to 
off (down) and then on (up) again. This unlatches the 
protection mode and allows the power supply to re- 
sume normal operation. 
One or two -48PS modules may be installed, depend- 
ing upon system size and cabinet configuration. A sys- 
tem consisting of only a Basic Cabinet requires only 
one -48PS module; a system using both a Basic and an Expansion Cabinet requires two. When two -48PS 
modules are installed, the -48VB and -48VP outputs 
of the power supplies are paralleled in the PSU. 
Whether one or two power supply modules are used, 
the outpuis are distributed, via fuses on the PSU front 
panel, to the Basic and LTU Shelves. The -48VP (-48P) 
outputs are distributed to the shelves via fuses Fl 
throuah F4. The RGEN module in the PSU is also ao- 
werei by a -48VP output through fuse F5. The -48’VB 
(-488) outputs are distributed to the shelves via fuses 
F6 through F9. 
If a fault condition in a -48Vdc Power Supply cannot 
be cleared, replace the power supply. 
c. Line/Trunk Unit Power Supply (LTUPS). The LTUPS is 
the standard power supply used to power the LTU shelf. 
It has four outputs: +SVdc, -5Vdc, +12Vdc, and -12Vdc. 
All LTUPS outputs have overvoltage, overcurrent, and 
short-circuit protection. 
An overvoltage at any output, whether due to an inter- 
nal failure or an external bridging of a high voltage to 
a lower voltage output, will result in shut-down of the 
power supply and cause all outputs to drop to approx- 
imately zero volts. An overcurrent or short-circuit at any 
output will cause that output to go into current limit- 
ing. Shut-down due to an overvoltage condition causes 
the power supply output to latch off. To unlatch the pow- 
er supply output and restore normal operation, the as- 
sociated input circuit breaker (LTUPSO, LTUPSl, or 
LTUPS2, located on the PSU front panel) must be set 
to off (down) and then on (up) again. This unlatches 
the protection mode and allows the power supply to 
resume normal operation. 
The power supplies are designed to automatically restore 
to normal operation when an output overcurrent or short- 
circuit condition is cleared. Note that an output fault 
should not normally trip an input circuit breaker. 
The power supplies are further protected against in- 
ternal faults by internal fuses and a thermal cut-off 
switch. The internal fuses, located in the input circuitry, 
will blow under certain internal fault conditions to pro- 
tect against the propagation of further fault conditions. 
The thermal cut-off switch will operate if the internal 
fault conditions cause overheating in the power sup- 
ply. Operation of this switch will cause the power sup- 
ply to go into the same protective mode as an 
overvoltage condition. 
Internal fault conditions which cause an increase in 
the input current to the trip point of the input circuit 
breaker will normally trip the circuit breaker. However, 
if the circuit breaker is faulty and does not trip, the in- 
ternal fuses and thermal cut-off switch will provide a 
degree of backup protection. If an internal fuse blows, 
replacement of the power supply is required. 
The -12Vdc output of the LTUPS is used only in DTMF 
PCBs. A loss of this output or a deviation below the 
normal operating limit will be evidenced only by im- 
proper operation of the DTMF PCBs. 
If a fault condition in an LTUPS cannot be cleared, 
replace the power supply. 
2-X (26 pages)  
						

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SATURN IIE EPAEX 
Maintenance and Troubleshooting A30808-X5130-DllO-l-6920 
Issue 1, May 1986 
SECTION 3.00 PREVENTIVE MAINTENANCE 
3.01 General. The following general-type service routines 
are suggested for proper upkeep of the SATURN IIE EPASX. 
The service routines should be performed on an annual ba- 
sis unless otherwise specified. 
a. Hardware and Cabling. Check for general mechani- 
cal integrity, no loose or broken parts and connectors. 
Tighten or repair as necessary. 
b. Cabinet Exterior. Clean exterior of cabinet usina a soft 
cloth dampened with a solution of water and-a mild 
detergent. c. Air Vents. Inspect air vents at top and bottom of cabi- 
net for unrestricted air passage. Clear vents as 
necessary. 
3.02 Floppy Disk Drives. Some manufacturers of floppy 
disk drives recommend periodic cleaning of the disk drive 
heads. The schedule of cleaning depends on usage and the 
surrounding environment but cleaning every 3 to 6 months 
is normally suggested. Use the head cleaning kit recommend- 
ed bv the manufacturer of the disk drives and follow the oroce- 
dureoutlined in Table 3.00 to clean the heads. ’ 
Table 3.00 Floppy Disk Head Cleaning Procedure 
STEP PROCEDURE VERIFICATION 
1 
Open the doors on both floppy disk drives. 
2 Replace one program disk with the cleaning disk; close 
that disk drive door (leave other door open). 
3 Access any CMU procedure from the service terminal System attempts to locate a CMU overlay file; red LED 
(e.g., DISPLAY STNASSN). on disk drive lights. 
NOTE: 
An 110 error message appears at service terminal. This 
is normal. However, if the CMU procedure already resides 
in system memory, repeat step 3 for different CMU 
procedure. 
4 Repeat the above procedure for the second floppy disk 
drive. 
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SATURN IIE EPABX A30808-X5130-DllO-l-8920 
Maintenance and Troubleshooting Issue 1, May 1986 
SECTION 4.00 TROUBLESHOOTING AND REWUR PROCEDURES 
4.01 General. This section of the practice provides step-by- 
step instructions for the troubleshooting and repair of mal- 
functions or failures during precutover or postcutover of the 
SATURN IIE EPABX. 
WARNING 
Hazardous voltages exist wirhin the equipment cabinet. 
Be extremely careful when performing maintenance and 
troubleshooting procedures wirh the equipment panel(s) 
removed. 
4.02 Test Equipment. The following test equipment is re- 
quired to perform the procedures contained in this practice. 
a. Digital Voltmeter. A digital voltmeter of good commer- 
cial quality with an accuracy of + 0.1%. The digital volt- 
meter is used to perform input and output voltage tests. 
b. Maintenance Test Phone. A test set or a single-line tele- 
phone may be used as a maintenance test phone for 
both Dial Pulse (DP) and Dual Tone Multifrequency 
fDTMF1 svstems. A modular iack (MTCE PHONE) is 
brovided on the front panel ofthe $SU for connectjng 
the maintenance test phone when it is equipped with 
a modular plug. When the maintenance test phone is 
not equipped with a modular plug, a station appear- 
ance at the MDF can be used for test connections. The 
maintenance test phone is used to perform the manu- 
al on-line diagnostic tests. 
c. Data Service Terminal. A Keyboard-Send-Receive 
(KSR) data terminal equipped with a standard ASCII 
keyboard and an EIA RS-232-C interface (Silent 700 
Series - Model 743 KSR - Texas Instruments, or 
equivalent). The data service terminal is used to ac- 
cess CMU procedures, a repertoire of auditing routines 
and the failure history memory. 
d. Transmission Measuring Set. A Transmission Measur- 
ing Set (TMS) is used to measure the transmission 
quality of a trunk or station. Refer to the manual on- 
line diagnostic tests, Outgoing Trunk Test and Station 
Line Tests. 
4.03 PCB and Power Supply Removal and Replacement. 
In many instances during troubleshooting, corrective actions 
may require that a suspected faulty PCB or power supply be 
removed and replaced with a spare. The following guidelines 
should be followed when removing and replacing these items. CAUTION 
Craft personnel handling PCBs with MOS integrated cir- * 
cuirs must first free themselves from electrostatic dis- 
charge by touching the cabinet chassis ground or wearing 
grounded wrist straps. Failure to observe this practice will 
result in damage to such PCBs due to electrostatic dis- 
charge. 
a. Refer to Table 4.00 before removing a PCB or power 
supply. 
b. 
Before inserting a PCB or installing a power supply, 
verify (when applicable) that correct strapping options 
are installed. (Refer to Siemens SATURN IIE Practice 
covering Installation Procedures.) 
4.04 System Fails to Reload. During normal system oper- 
ation, the upper four red LEDs (STO, STl, ST2, and ST3) on 
the CIOP PCB (Figure 2.02) provide a binary display that cons- 
tantly decrements. 
When processor initialization is requested, either manually 
via depression of the Reset switch on the CIOP PCB or auto- 
matically via self-test or audit test routines, all four indicators 
momentarily light steadily. As various initialization events are 
completed, the binary value of the four indicators are 
decremented. If no failures occur during system initialization, 
all four indicators momentarily extinguish then begin a con- 
tinuous decrement sequence indicating normal system oper- 
ation. If a failure is encountered during the initialization period: 
the four LED indicators momentarily stop decrementing and 
display a binary value that represents the point at which the 
initialization failed. The corrective repair procedure for the in- 
dicated binary value is provided in Table 4.01. Note that the 
failure indication is displayed only for a short period of time 
(approximately 1 second); after which the system attempts to 
reinitialize. This cycle is ‘repeated until the failure is corrected. 
4.05 Alarm Conditions and Reporting. The SATURN IIE 
System is provided with software self-test routines and audit 
test routines which constantly check for system failures. When 
a failure or failures occur, the detected failure(s) are record- 
ed as error messages in the failure history memory and the 
appropriate major or minor alarm indicator is lighted. A 
description of each alarm type is provided in Section 2.00, 
Maintenance Overview. The corrective action required for a 
given alarm type is provided in Table 4.02 (Alarm Reporting 
and Processing). 
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SATURN IIE EPABX A30808-X5130-DllO-l-8920 
Maintenance and Troubleshooting Issue 1, May 1986 
Table 4.00 PCB and Power Supply Removal Guidelines 
MODULE OR UNIT SERVICE STATE SPECIAL INSTRUCTIONS 
CIOP NA 
CONF NA 
DTMF 00s 
FDDO, FDDl NA 
LTUC . 
NA 
LTUPS 
l NA 
MCA 
NA 
MEM3 NA 
MEM4 NA 
MSM . 
NA 
MSM Battery 
l ES 
PIMD 
PSC 
PSU K 
RAUP NA 
SlAl6 00s 
SLMA-0 00s 
SLMA-S 00s 
SLMD 00s 
SMXTG NA 
TM BA-2 00s 
TMBA-4 00s 
TMBM 00s 
TMIE 00s 
-48PS0 NA 
-48PSl . 
NA 
. 
Optional depending upon customer/system requirements. 
NA = Not Applicable, 00s = Out-of-Service 
Notes: . Note 1 
.Note 1 
Note 2 
None 
Note 3 
Note 4 
Note 1 
Note 1 
Note 1 
Note 1 
Note 5 
Note 2 
Note 1 
Note 6 
Note 1 
Note 2 
Note 2 
Note 2 
Note 2 
Note 1 
Note 2 
Note 2 
Note 2 
Note 2 
Note 7 
Note 7 
1. 
2. 
3. 
4. 
5. 
6. 
7. System outage (halts call processing). Set BASIC PS circuit breaker on PSU to off. Open FDDs and ;‘emove floppy 
disks before removing PCB. After new PCB is inserted, reinsert floppy disks, close FDDs, set BASIC PS circuit breaker 
on PSU to on, and press reset switch on CIOP 
Wait for in-process calls to complete. 
Removal places one-half of ports in shelf out-of-service. 
Before removal, set related LTUPS circuit breaker on PSU to off. Removal places all ports in shelf out-of-service. 
Battery may be replaced with power applied to system. 
System outage (halts call processing). Before removal, set all circuit breakers to off, open FDDs and remove floppy 
disks. After replacement, reinsert floppy disks, close FDDs, set circuit breakers to on, and press reset switch on CIOF! 
Set related circuit breaker on PSU to off. May halt call processing depending upon system configuration and traffic. 
If system has two -48Vdc power supplies (-48PS0 and -48PSl), the remaining supply may support system operation. 
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SATURN IIE EPABX 
Maintenance and Troubleshooting A30808-X5130-DllO-l-8920 
Issue 1, May 1986 
,,- Table 4.01 Failure Indications on Controller/Input-Output Processer Printed Circuit Board, CIOP 
ZTO ’ ST1  
ST2 ’ ST3 HEX 
LED /’ LED 3, LED LED CODE ERROR DETECTED ACTION 
/ 
OFF OFF OFF 0 
Start of self test noi halted None 
OFF OFF ON 1 Main processor error Note 1 
OFF OFF OFF 
:: ON 2 EPROM checksum error Note 1 
OFF OFF 3 MEMO slot low 64k test error Notes 1 
and 2 
OFF ON OFF OFF 4 8k by 8static RAM test error Note 1 
OFF ON OFF 5 lRAM memory test error Note 1 
OFF ON ON 09°F 6 ORAM memory test error Note 1 
OFF ON ON ON 7 SIB side error Notes 1 
and 3 
ON ON OFF OFF C Global memory error Notes 1 
and 2 
ON ON OFF D Watchdog timer error Note 1 
ON ON ON 09°F E SIB serial loopback test error Notes 1 
and 3 
ON ON ON ON F SIB counter timing test Notes 1 
and 3 
ON OFF OFF OFF 8 Start boot process (self test done) None 
ON OFF OFF ON 9 Disk controller error Note 1 
ON OFF ON OFF A Drive not ready error- Note 4 
ON OFF ON ON B CRC retry errors exceed 8 Note 4 
Notes: 
1. Upon failure, retry loading procedure. If failure persists, replace CIOP PCB. 
2. If procedure in Note 1 failato correct fault, replace memory PCBs starting with slot MEMO. 
3. If procedure in Note 1 fails to correct fault, replace SMXTG PCB 
4. Upon failure, retry loading procedure using another set of floppy disks. If failure persists, check/replace disk drives. 
If fault is not corrected, replace CIOP PCB. 
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							SATURN IIE EPABX A30808-X5130-DllO-l-8920 
Maintenance and Troubleshooting issue 1. May 1986 
Table 4.02 Alarm Reporting and Processing 
ALARM TYPE CORRECTIVE ACTION 
a. AUDIT eeee(pp) aaaa bbbb 
cccc dddd mm/dd hh:mm 
eeee = error number 
(PP)’ = ID of process 
aaaa’ = error information 
bbbb’ = error information 
cccc* = error information 
dddd’ = error information 
mm/dd = date of error 
hh:mm = time of error 
(1) If eeee = 1428 The memory contents audit routine has detected a check- 
sum error in protected memory. 
A system reload is automatically initiated. 
If the system appears to be performing correctly with the 
exception of this error, craft personnel can disable the 
memory contents audit routine until the cause can be iso- 
lated by a systematic replacement of memory PCBs to iso- 
late the failing PCB. 
If the memory contents audit routine is disabled, craft per- 
sonnel should avoid saving customer data to the disk, since 
this operation could corrupt the disk as well. 
(2) If eeee = 1433 DTMF receiver unusable. 
The DTMF receiver audit routine has detected a failing DTMF 
receiver. If no DTMF receivers are already out-of-service, the 
suspected DTMF receiver is placed in the out-of-service craft 
state. If one or more DTMF receivers are already out-of- 
service, the suspected DTMF receiver is left in-service. 
NOTE: Out-of-service craft state means that the system has 
automatically placed the circuit in such a state and requires 
craft personnel to manually return it to an in-service state. 
If the problem is repetitive, replace the associated DTMF 
PCB during a low-traffic period, taking care to place all cir- 
cuits in the PCB out-of-service (craft) before removing it. 
NOTE: The PEN of the suspected DTMF receiver is identi- 
fied as indicated in the error message below. 
“AUDIT 1433(18) wxyz 0000 
0000 0000 hhldd hh:mm” 
wxyz = PEN 
(3) If eeee = 1438 
l/O peripheral device or PCB failure. 
The I/O loop around audit routine has detected a failed l/O 
device or associated PCB. If the problem is repetitive, repair 
or replace the failing device or replace the associated I/O 
PCB (CIOP or RAUP). 
* = For Siemens field service use only. NOTE: The identity of the failing device or l/O PCB is indi- 
cated in the error message below. 
“AUDIT 1438(18) OOaa OObb 
0000 0000 mm/dd hh:mm”  
						

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SATURN IIE EPABX 
A30808-X5130-DllO-l-8920 
Maintenance and Troubleshooting Issue 1, May 1986 
Table 4.02 Alarm Reporting and Processing (Continued) 
ALARM TYPE CORRECTIVE ACTION 
aa = l/O device and associated PCB identity number 
bb = Device return code 
(4) If eeee = 1468 
l * aa I/O Device 
PCB 
00 Floppy Disk Drive 1 
CIOP 
01 Floppy Disk Drive 2 
CIOP 
02 Floppy Disk Drive 3 _ CIOP 
03 Service Term’l(TTY) CIOP 
04 RS232C CH 0 (TTYO) RAUP 
05 RS232C CH 1 (TTYl) RAUP 
06 Modem 
RAUP 
Maintenance channel failure. 
The data device audit routine detected a failure of the main- 
tenance loopback channel used to run loopback tests on 
data devices. The data device audit routine must be termi- 
nated until the maintenance loopback channel can be re- 
stored. 
Possible trouble sources: 
(5) ff eeee = 1469 
_ (1) Faulty SMXTG PCB. 
(2) Faulty MCA PCB. 
SIB ;ead error during data loop around test. 
The SIB (line scanning processor) on the CIOP PCB failed 
to respond to a read command during the data device au- 
dit routine. The data device audit routine is terminated. 
Possible trouble source: 
(1) Faulty CIOP PCB. 
(6) If eeee = 1471 
Data device audit error (bad path). 
The identified data device failed the periphera! interface 
loopback (LB5) test run by the data device audit routine. 
Possible trouble sources: 
(1) Faulty SLMD or PIMD PCB. 
(2) Faulty MCA PCB. 
(3) Faulty SMXTG PCB. 
(4) Faulty CIOP PCB. 
NOTE: The PEN of the failed data device is identified as 
indicated in the error message below. 
‘AUDIT 1471(18) wxyz 0000 
0000 0000 mm/dd hh:mm” 
wxyz = PEN 
f. 
= Applies to OC II software feature package only. 
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							SATURN IIE EPABX A30808-X5130-DllO-l-8920 
Maintenance and Troubleshooting Issue 1, May 1986 
Table 4.02 Alarm Reporting and Processing (Continued) 
ALARM TYPE 
(7) If eeee = 1472 ** CORRECTIVE ACTION 
Data device audit error (bad path). 
The identified data device passed the peripheral interface 
loopback (LB5) test run by the data device audit routine, but 
failed the remote channel loopback (LB3) test. 
Possible trouble sources: 
(1) Faulty data device (DCI). 
(2) Faulty cabling from SLMD to DCI. 
NOTE: The PEN of the failed data device is identified as 
indicated in the error message below. 
“AUDIT 1472(18) wxyz 0000 
0000 0000 mm/dd hh:mm” 
wxyz = PEN 
. CONNECT eeee(pp) PEN=wxyz 
mm/dd hh:mm 
eeee = error number 
(PP)’ = ID of process 
wxyz = PEN 
mm/dd = date of error 
hh:mm = time of error 
(1) If eeee = 1439 MTS audit failure. 
The MTS (time switch) audit routine has detected a possi- 
ble port failure on the MCA PCB when attempting to con- 
nect the specified device to a special test port. 
If the problem is repetitive, the MCA PCB should be 
replaced. The failure of a time switch port may cause the 
identified port to experience intermittent connections. 
NOTE: The PEN of the affected device is identified as indi- 
cated in the error message on the left. 
(2) If eeee = 2148 t RLT no answer condition detected (CAS attendant position 
unstaffed). 
This branch PABX detected has a no answer condition on 
the identified RLT trunk to the CAS main PABX. The CAS 
attendant positions appear to be unstaffed. The RLT has 
been placed out-of-service. If no other RLT trunks remain 
in-service, the branch PABX will operate in the night mode 
until the RLT trunks are manually placed back in-service. 
Instruct CAS attendants to use the deactivate feature prior 
to leaving consoles unstaffed. 
’ = For Siemens field service use only. 
l * = Applies to OC II software feature package only. 
T = Applies to CAS software feature package only. 
4-6  
						

							SATURN IIE EPABX 
Maintenance and Troubleshooting 
Table 4.02 Alarm Reporting and Processing (Continued) 
ALARM TYPE 
c. DISCONNECT 1440(18) 
PEN = wxyz mm/dd hh:mm 
1440 = error number 
WY = ID of process 
wxyz = PEN 
mm/dd = date of error 
hh:mm = time of error CORRECTIVE ACTION 
MTS audit failure. 
The MIS (time switch) audit routine has detected a possi- 
ble port failure on the MCA PCB when attempting to con- 
nect the specified port to quiet tone. 
If the problem is repetitive, the MCA PCB should be 
replaced. The failure of a time switch port may cause the 
identified port to experience intermittent connections. 
NOTE: The PEN of the affected device is identified as indi- 
cated in the error message on the left. 
d. FUSE FAILURE (18) 
mm/dd hh:mm Fuse failure. 
(18)’ = ID of process 
mm/dd = date of error 
hh:mm = time of error 
NOTE: For reference only, the error number for this 
error message is 1427. The automatic equipment test routines have detected a fuse 
failure alarm. 
Locate and replace the blown fuse on the PSU front panel. 
e. l/O ERROR eeee(pp) INFO = A failure occurred during an l/O operation. 
a, b, cccc mm/dd hh:mm 
The operation completed with an unexpected result or did 
eeee = error number (1026 or 1027) not complete in the allocated time period. 
(PP)’ = ID of process 
a = ID of PCB If problem is repetitive, replace indicated PCB, FDD, or repair 
b = ID of connector/interface or device or replace faulty 110 device. 
cccc” = error information 
mm/dd = date of error NOTE: The identity of the suspected faulty PCB, connec- 
hh:mm = time of error tar/ interface, l/O device, or FDD is provided in the error mes- 
sage above and indicated by the letters “a” and “b” in the 
message. If “b” is an even number, the fault is in the trans- 
mit path; if an odd number, the the receive path is faulty. 
a b PCB Connector/ 
Interface/Device 
0 0 RAUP TTY0 
0 1 RAUP TTY0 
0 2 RAUP n-Y1 
0 3 RAUP TTY1 
0 4 RAUP modem interface 
0 5 RAUP modem interface 
1 1 CIOP TTY/Service Term’1 
1 2 CIOP TTY/Service Term? 
2 0 CIOP FDDO 
2 1 CIOP FDDl 
2 2 CIOP FDD2 (Not Used) 
* = For Siemens field service use only. 
4-7  
						

							Table 4.02 Alarm Reporting and Processing (Continued) 
ALARM TYPE CORRECTIVE ACTION 
f. LTU FAILURE (18) PEN’S LTU (or Basic Shelf) clock failure error. 
aaaa TO bbbb mm/dd hh:mm 
The identified shelf and LTUC (where applicable) has lost 
(W’ = ID of process communication with the CE. The error may be a result of 
aaaa = 1st number in range of PENS affected the following: 
by failure 
bbbb = last number in range of PENS affect- (1) Blown shelf fuse on the PSU front panel. 
ed by failure 
mm/dd = date of error (2) A faulty LTU shelf power supply, LTUPS. 
hh:mm = time of error 
(3) A faulty LTUC PCB. 
NOTE: For reference only, the error number of this 
error message is 1424. (4) Loss of critical signals (CKA, SYP, or SYNR) from the CE 
as a result of an SMXTG PCB or other failure. 
NOTE: The PEN range in the error message identifies the 
shelf and PCB experiencing faults. The following table corre- 
lates each possible PEN range to a specific shelf and sus- 
pected faulty PCB. The associated LTU clock is indicated 
in the fourth column. (Refer also to Table 4.03 for LTUC PCB 
alarm information.) 
aaaa bbbb SHELF PCB LTU 
(PEN Range) CLK 
0000 0267 Basic SMXTG 0 
0300 0637 Basic SMXTG 1 
1000 1337 LTU 1 LTUC 0 2 
1400 1737 LTU 1 LTUC 1 3 
2000 2337 LTU 2 LTUC 0 4 
2400 2737 LTU 2 LTUC 1. 5 
3000 3337 LTU 3 LTUC 0 6 
3400 3737 LTU 3 LTUC 1 7 
NOTE: If replacement of the indicated LTUC fails to correct 
the fault condition, replace the SMXTG PCB. 
9 MBUS T/O (pp) Multibus timeout error. 
LOC=aaaa:bbbb mm/dd hh:mm 
Memory failed to respond to a data request from the main 
(PP)’ = ID of process processor. If problem is repetitive, consult Siemens field 
aaaa: service representative. 
bbbb = address of program which initiated 
the unsuccessful memory request 
mm/dd = date of error 
hh:mm = time of error 
NOTE: For reference only, the error number for this 
error message is 1402. 
h. MEM PAR eeee(pp) STAT=aaaa 
ADDR=bbbb MEMc mm/dd hh:mm 
eeee = error number 
(PP)’ = ID of process 
aaaa’ = error information 
bbbb’ = error information 
C = 
memory PCB slot ID number in Basic 
Shelf 
mm/dd 
= date of error 
hh:mm = time of error 
* = For Siemens field service use only. 
4-a