Siemens Saturn Iie Epabx General Description Manual
Have a look at the manual Siemens Saturn Iie Epabx General Description Manual online for free. It’s possible to download the document as PDF or print. UserManuals.tech offer 428 Siemens manuals and user’s guides for free. Share the user manual or guide on Facebook, Twitter or Google+.
A30808-X5130-DllO-l-8920 Issue 1, May 1986 I SATURN ItE EPABX Maintenance and Troubleshoohng (2) If the circuit remains in the out-of-service - automatic state, continue with step 2. 2. Using the ALMDATA CMU Procedure, check the Failure History Memory for system alarm mes- sages. The corrective repair procedures for system alarm messages are provided in Table 4.02. 3. If more than one SDT fails at the same time, (a) If all affected SDTs are assigned to the same SLMD PCB, replace the PCB. (b) Replace the SMXTG PCB. 4. If only one SDT fails, (a) Verify that the line cord connectors are properly seated in the modular jacks. One end of the line cord plugs into the rear base of the SDT and the other end connects to the modular con- necting block. Also insure that the handset cord connectors are properly seated in the handset and SDT jacks. (b) Replace the SDT with a known good SDT. If the problem is corrected, replace the faulty SDT. (c) Replace the associated SLMD PCB. (d) Replace the SMXTG PCB. b. If the trouble report indicates that one or more LED indicators or buttons do not operate properly, 1. Verify that the problem is not due to the misunder- standing of a feature by the SDT user. 2. Perform the Siemens Digital Telephone button test (Table 4.16 for DYAD telephones or Table 4.17 for JR-DYAD telephones). 3. If the Siemens Digital Telephone button test pass- es but the problem persists: (a) Replace the SDT with a known good SDT If the problem is corrected, replace the faulty SDT. (b) Replace the associated SLMD PCB. c. If the trouble report indicates that the display unit on the SDT is not operating properly, 1. Verify that the problem is not due to the misunder- standing of a feature by the SDT user. 2. Perform the Siemens DYAD Telephone Display Test (Table 4.18). 3. If the display test passes but the problem persists: (a) Replace the SDT with a known good SDT. If the problem is corrected, replace the faulty SDT. (b) Replace the associated SLMD PCB d. If the SDT dial pad is suspected of being faulty, per- form the Siemens Digital Telephone button test (Table 4.16 for DYAD telephones or Table 4.17 for JR-DYAD telephones). e. If-the SDT fails to ring, 1. 2. 3. 4. 5. 6. Usinq the SERVICE CMU Procedure, check serv- ice siate of the circuit serving this SDT. (a) If in-service, continue with step 2. (b) If out-of-service-craft, return the circuit to the in-service state (Table 4-10) and verify opera- tion. Continue with step 2 if the SDT remains inoperative. (c) if out-of-service - automatic, attempt to return the circuit to the in-service state (Table 4-10). (1) If circuit returns to the in-service state and the failure clears, the problem was tran- sient. If transient problems recur on the same circuit, continue with step 2. (2) If the circuit remains in the out-of-service - automatic state, continue with step 2. Using the ALMDATA CMU Procedure, check the Failure History Memory for system alarm mes- sages. The corrective repair procedures for system alarm messages are provided in Table 4.02. Perform the Siemens Digital Telephone Button Test (Table 4.16 for DYAD telephones or Table 4.17 for JR- DYAD telephones), as applicable. This test checks the audible alerting device in the SD% If the alerting device does not sound as’descr~bed in the Siemens Digital Telephone Button Test, try adjusting the volume level of the tone ringer (DYAD Telephones) or the audible alert tone level (JR-DYAD Telephones). (The tone ringer or alert tone level control is the black knob located on the underside of the telephone.) If the Siemens Digital Telephone button test pass- es but the problem persists, verify that the problem is not due to the activation of a SATURN IIE fea- ture (e.g., Do Not Disturb, Station Ringer Cutoff, Call Forwarding, etc.). Replace the SDT with a known good SDT If the problem is corrected, replace the faulty SDT. Replace the associated SLMD PCB. f. If the SDT rings continuously, 1. Replace the SDT with a known good SDT. If the problem is corrected, replace the faulty SDT. 2. Replace the associated SLMD PCB. g. If dial tone cannot be heard, 1. Using the SERVICE CMU Procedure, check serv- ice state of the circuit serving this SDT. (a) If in-service, continue with step 2 4-29
, SATURN IIE EPABX Maintenance and Troubleshooting (b) 03 If out-of-service - craft, return the circuit to the in-service state (Table 4-lo), and verify opera- tion. Continue with step 2 if the SDT remains inoperative. If out-of-service - automatic, attempt to return the circuit to the in-service state (Table 4-10). (1) If circuit returns to the in-service state and the failure clears, the problem was tran- sient. If transient problems recur on the same circuit, continue with step 2. (2) If the circuit remains in the out-of-service - automatic state, continue with step 2. Using the ALMDATA CMU Procedure, check the Failure History Memory for system alarm mes- sages. The corrective repair procedures for system alarm messages are provided in Table 4.02. If dial tone cannot be heard at more than one SDT, (4 (b) (cl If all affected SDTs are assigned to the same SLMD PCB, replace the PCB. Perform the Tone Generator Test (Table 4.06). If the Tone Generator Test passes but the failures persist, replace the SMXTG PCB. If dial tone cannot be heard at one SDT only, (a) Replace the SDT with a known good SDT. If the problem is corrected, replace the faulty SDT. (b) Replace the associated SLMD PCB. h. If dial tone is distorted or at a low level, 1. If dial tone is distorted or at a low level at only one SDT, replace the SDT with a known good SDT. 2. If dial tone is distorted or at a low level on more than one SDT, (a) Perform the Tone Generator Test (Table 4.06). (b) If the Tone Generator Test passes but the failure still persists, replace the associated PSC PCB and recheck dial tone (PSCO for Basic Cabi- net; PSCl for Expansion Cabinet). (c) If failure persists, reinsert original PSC PCB and replace the MCA PCB. i. If static is heard in the handset, 1. Replace the handset. 2. Replace the handset coiled cord. A30808-X5130-DllO-l-8920 Issue 1, May 1986 3. Replace the SDT with a known good SDT. If the problem is corrected, replace the faulty SDT. 4. Replace the associated SLMD PCB. 4.10 Manual On--Line Diagnostic Tests. Step-by-step proce- dures for the system and apparatus diagnostic tests are described in Tables 4.06 through 4.18. a. System Diagnostic Tests. The following system diag- nostic tests and procedures can be performed: 0 Tone Generator Test (Table 4.06) 0 Outgoing Trunk Test (Table 4.08) 0 DTMF Receiver Test (Table 4.09) l Placing Circuit(s) In-Service (Table 4.10) l Taking Circuit(s) Out-of-Service (Table 4.11) b. Apparatus Diagnostic Tests. The following apparatus diagnostic tests can be performed: l DTMF Dial Pad Test (Table 4.12) l Station Line Test (Table 4.13) 0 Attendant Console Test (Table 4.14) * Siemens DYAD Telephone Button Test (Table 4.16) 0 Siemens JR-DYAD Telephone Button Test (Table 4.17) l Siemens DYAD Telephone Display Test (Table 4.18) 4.11 Automatic On-Line Audit Tests. The SATURN IIE EPABX is provided with a repertory of audit test routines that are used to test the EPABX equipment during processor idle time. These audit test routines can be enabled and disabled by using Customer Memory Update (CMU) Procedures at a service terminal. When an audit test routine is enabled, de- tected failures are recorded in the failure history memory and the appropriate major and minor alarm indicators are light- ed. Appropriate recovery routines are executed automatical- ly on the failing equipment. . The procedures for enabling and disabling the audit test rou- tines are described in Siemens practice SATURN IIE EPABX Customer Memory Update Procedures. The following audit test routines can be enabled and disabled. * Memory Parity Audit Test 0 Memory Content Audit Test 0 Input/Output Loop-Around Audit Test 0 Speech Highway Audit Test l DTMF Receiver/Tone Generator Audit Test l MTS Memory Control Audit Test l Digital Apparatus Audit Test * Trunk Activity Audit Test 4.12 Spare Parts. The troubleshooting instructions are based on the assumption that spare Printed Circuit Boards (PCBs) and other replaceable assemblies are available on the premises, centralized job site, or some location convenient to the EPABX. A list of spare parts and associated Dart num- bers is provided in Siem’ens practice SATURN IIE CPABX In- stallation Procedures.
SATURN IIE EPABX Maintenance and Troubleshooting Table 4.06 Tone Generator Test STEP PROCEDURE VERIFICATION IF VERIFICATION IS NOT OBTAINED , - 1 Place maintenance test phone off-hook. Dial tone returned. 2 Dial the Diagnostic Test Access Code. Recall dial tone returned. 3 Dial 1 for tone generator test. None. 4A Dial 00 if all tones are to be tested and All tones are returned in the sequence If any tone(s) is returned distorted, retry verify that all tones returned are un- shown in Table 4.07 for 2 seconds test two more times. If distortion con- distorted. each. Test repeats until the main- tinues, replace the SMXTG PCB. Note tenance test phone is placed on-hook that the first sixteen tones are hard- or hook-flashed. ware interrupied. If continuous tones are returned, replace the SMXTG PCB. 48 5A Dial the individual test number shown Chosen tone returned until main- If chosen tone is returned distorted, in Table 4.07 if a particular tone is to tenance test phone is placed on-hook retry test two more times. If distortion be tested. or hook-flashed. continues, replace the SMXTG PCB. If additional tests or procedures are to Recall dial tone is returned. be performed, hook-flash the main- tenance test phone and dial the next code (Diagnostic Test Access Code is not redialed). 5B If no additional tests or procedures are None. to be performed, place the main- tenance test phone on-hook. Table 4.07 Tone Generator Test Numbers TEST . NUMBER TONE 00 Circular Sequence 01 DTMF-1 (697Hz + 1209Hz) 02 MMF-2 (697Hz + 1336Hz) 03 MMF-3 (697Hz + 1477Hz) 04 DTMF-4 (77OHz + 1209Hz) 05 DTMF-5 (77OHz + 1336Hz) 06 DTMF-6 (i7OHz + 1477Hz) 07 DTMF-7 (852Hz + 1209Hz) 08 DTMF-8 (852Hz + 1336Hz) 09 DTMF-9 (852Hz + 1477Hz) 10 DTMF-0 (941Hz + 1336Hz) 11 MMFT (941Hz + 1209Hz) 12 DTMF-# (941Hz + 1477Hz) 13 DTMF-A (697Hz + 1633Hz) 14 MMF-B (77OHz + 1633Hz) 1% DTMF-C (852Hz + 1633Hz) 16 DTMF-D (941Hz + 1633Hz) 17 Dial Tone (350Hz + 440Hz) 5 Busy Tone (480Hz + 620 Hz) 19 Reorder Tone (Fast Busy Tone) 20 Test Tone (1004Hz @ -16dBm) 21 Low Tone (440Hz) 22 Audible Ring (440Hz + 480Hz - uninterrupted) 23 Intercept Tone (440Hz + 62OHz) 24 LDN Call Identification Tone (400 Hz + 480 Hz - interrupted) 25 Called Party Tone (2100 Hz - uninterrupted) (see NOTE) 26 Remote Hold Recall Identification Tone (400 Hz) 27 Quiet Tone NOTE: The Called Party Tone applies to SATURN Systems programmed with the Office Communications II (OC II) software package. - I -
A30808-X5130-DllO-l-6920 Issue 1, May 1986 Table 4.08 Outgoing Trunk Test STEP PROCEDURE VERIFICATION IF VERIFICATION IS NOT OBTAINED 1 Place maintenance test phone Dial tone is returned. off-hook. 2 Dial the Diagnostic Test Access Code. Recall dial tone is returned. 3 Dial 2 to enable trunk test. None. 4 Dial the two-digit trunk group number None. (00 through 31) containing the trunk circuit to be tested. 5 Dial the two-digit trunk number (00 - CO or PABX dial tone is returned. Also, If reordar tone is returned, the select- 99) of the trunk circuit to be tested. the associated trunk circuit LED on the ed trunk circuit is either an incoming- trunk PCB is lit steadily to indicate the type, invalid, or not assigned (check trunk has been seized outgoing. data base assignments). If busy tone is returned, the selected trunk is in use; retry later. If CO or PABX dial tone is not returned, verify trunk MDF cross-connections and attempt to access CO/PABX trunk using a test set. If the trunk is work- ing properly, replace the PCB for the trunk circuit under test and retry test. 6 For CO-type trunks (i.e.,TMBM PCB), Test tone (1004Hz) is returned. dial the test tone number provided by tlie local phone company. . 7 Verify that the returned test tone level If the returned test tone level is weak, is correct, using a TMS. replace PCB with another having the same characteristics and retry test. If returned test tone level increases con- siderably, replace trunk PCB and retry test. If the test tone level is still weak, contact CO repair service to verify trunk facility. 8A If additional tests or procedures are to Recall dial tone is returned. be performed, hook-flash the main- tenance test phone and dial ihe next code (Diagnostic Test Access Code is not redialed). If no additional tests or procedures are None. to be performed, place the main- tenance test phone on-hook. SATURN IIE EPABX Maintenance and Troubleshooting 4-32
+ I -. SATURN IIE EPABX Maintenance and Troubleshooting Table 4.09 DTMF Receiver Test STEP PROCEDURE VERIFICATION 6A 6B STEP PROCEDURE VERIFICATION 1 2 3 4A 4B Place maintenance test phone off-hook. Dial the Diagnostic Test Access Code. Dial #f for DTMF receiver test. Dial the four-digit PEN of the DTMF receiver circuit to be tested. Depress the maintenance test phone keypad buttons in the following se- quence. a. For 12-button phones: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, * and #. b. For l&button phones: A, B, C, D, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, * and #. If additional tests or procedures are to be performed, hook-flash mainienance test phone and dial the next code (Di- agnostic Test Access Code is not rediated). If no additional tests or procedures are to be performed, place the main- tenance test phone on-hook. Dial tone is returned. Recall dial tone is returned. None. Dial tone is returned and the associat- ed MMF receiver circuit LED in the MMF PCB is lit steadily. Test tone (1004Hz @ -16dBm) is returned. Recall dial tone is returned and the as- sociated MMF receiver circuit LED in the MMF PCB is extinguished. The associated DTMF receiver circuit LED in the MMF PCB is extinguished. . Table 4.10 Placing Circuit(s) In-Service Place maintenance test phone off-hook. Dial the Diagnostic Test Access Code Dial 7 for placing a circuit(s) in-service. If a single circuit is to be placed in- service, dial the four-digit PEN of the circuit. If all the circuits in a PCB (except an %A16 PCB) are to be placed in- service, dial the first three digits of the PEN (W, X, and Y) for the PCB, fol- lowed by the digit 8. For an SLAl6 PCB, dial the first three digits of the PEN (designating the shelf, channel group, and slot; W, X, and Y) followed by the digit 8, to place the first group of eight circuits in-service. To place the second group of eight circuits in- service, add 1 to the slot number when dialing the first three digits of the PEN (i.e. W, X, Y+l), then dial the digit 8. Dial tone is returned. Recall dial tone is returned. None. Confirmation tone is returned. Confirmation tone is returned. A30808-X5130-DllO-l-8920 Issue 1, May 1986 IF VERIFICATION IS NOT OBTAINED If busy tone is returned, the DTMF receiver circuit is busy; retry later. If re- order tone is returned, the DTMF receiver circuit is not assigned (check data base assignment). If intercept tone is returned at any time, either the MMF receiver or the main- tenance phone keypad is not operat- ing properly, or the buttons were depressed in the wrong sequence. Retry test with another DTMF phone. If intercept tone is returned again, the MMF receiver circuit is defective. Replace the MMF PCB. IF VERIFICATION IS NOT OBTAINED If reorder tone is returned, the select- ed circuit is invalid or unassigned. Check data base. assignments. If reorder tone is returned, the PEN of the selected PCB (or SlA16 circuit group) is invalid or unassigned. Check data base assignments. 4-33
-. Table 4.10 Placing Circuit(s) In-Service (Continued) STEP 5A STEP PROCEDURE VERIFICATION 1 2 3 4A 48 5A 58 PROCEDURE If additional tests or procedures are to be performed, hook-flash the main- tenance test phone and dial the next code ( Diagnostic Test Access Code is not redialed). If no additional tests or procedures are to be performed, place the main- tenance test phone on-hook. I VERlFlCATlON Recall dial tone is returned None. Table 4.11 Taking Circuit(s) Out-of-Service Place maintenance test phone off-hook. Dial tone is returned. Dial the Diagnostic Test Access Code. Recall dial tone is returned. Dial 8 for taking a circuit(s) out-of- service. None. If a single circuit is to be taken out- of-service, dial the four-digit PEN of the circuit. Confirmation tone is returned. If all the circuits in a PCB (except an SLA16 PCB) are to be taken out-of- service, dial the first three digits of the PEN (W, X, and Y) for the PCB, followed by the digit 8. For an SLA16 PCB, dial the first three digits of the PEN (designating the shelf, channel group, and slot; W, X, and Y) followed by the digit 8, to take the first group of eight circuits out-of-service. To take the second group of eight circuits out- of-service, add 1 to the slot number when dialing the first three digits of the PEN (i.e. W, X, Y+l), then dial the digit 8. Confirmation tone is returned. If additional tests or procedures are to be performed, hook-flash the main- tenance test phone and dial the next code ( Diagnostic Test Access Code is not redialed). Recall dial tone is returned.. If no additional tests or procedures are to be performed, place the main- tenance test phone on-hook. None. IF VERIFICATION IS NOT OBTAINED IF VERIFICATION IS NOT OBTAINED If reorder tone is returned, the select- ed circuit is invalid or unassigned. Check data base.assignments. If reorder tone is returned, the PEN of the selected PCB (or .%A16 circuit group) is invalid or unassigned. Check data base assignments. 4-34
, SATURN IIE EPABX Maintenance and Troubleshooting A30808-X5130-DllO-l-8920 Issue 1, May 1986 Table 4.12 DTMF Dial Pad Test NOTES: 1. If the system option flag TSTDIAG has been enabled in the data base or the station under test is class-marked with the TSTAPP feature, the maintenance test phone is not required to enable or disable the Apparatus Test routines; therefore, perform steps 5 through 8. 2. If the system option flag TSTDIAG has been disabled in the data base or the station under test is not class- marked with the TSTAPP feature, the maintenance test phone is required to enable or disable the Apparatus Test routines; therefore, perform steps 1 through 9. STEP PROCEDURE VERIFICATION IF VERIFICATION IS- NOT OBTAINED 1 Place maintenance test phone Dial tone is returned off-hook. 2 Dial the Diagnostic Test Access Recall dial tone is returned. Code. 3 Dial 3 to enable the tests. Confirmation tone returned. 4 Place maintenance test phone None. on-hook. 5 Place DTMF station under test Dial tone is returned. off-hook. Dial the Test DTMF Pad Access Recall dial tone is returned. Code. Depress the DTMF keypad buttons in Recall dial tone ceases. After all the If busy tone is returned at any time, the following sequence: DTMF keypad buttons are depressed either the DTMF keypad buttons were in the sequence indicated, test tone depressed out of sequence, the For 12-button phones: 1,2,3,4, 5, 6, (1004Hz @ -16dbm) is returned for DTMF keypad of the station under 7, 8, 9, 0, * and #. one minute. test is defective, or the subscriber line circuit is defective. To isolate the For 16-button phones: A, 8, C, D, 1, failure, retry the test. If problem per- 2, 3, 4, 5, 6, 7, 8, 9, 0, * and #. sists, replace the station instrument to determine if it is defective. If problem is not resolved, replace the associated subscriber line module (SLMA-O,SLMA-S,or SLA16) PCB. Verify the level of test tone by using If the measured test tone is correct a TMS. but weak, replace the station set. If the measured tone is low, replace as- sociated subscriber line module (SLMA-0, SLMA-S, or %A16 PCB). Place DTMF station under test on- None. hook to terminate test. 1 If no additional Apparatus Tests are to be performed, proceed as follows: Place maintenance test phone Dial tone is returned. off-hook. Dial the Diagnostic Test Access Recall dial tone is returned. Code. Dial 2 to disable the Apparatus Tests. None. Place maintenance test phone None. on-hook. 4-35
SATURN IIE EPABX Maintenance and Troubleshooting A30808-X5130-DllO-l-8920 Issue 1, May 1986 Table 4.13 Station Line Test NOTES: 1. If the system option flag TSTDIAG has been enabled in the data base or the.station under test is class-marked with the TSTAPP feature, the maintenance test phone is not required to enable or disable the Apparatus Diag- nostic -Test routines; therefore, perform steps 5 through 10. 2. If the system option flag TSTDIAG has been disabled in the data base or the station under test is not class- marked with the TSTAPP feature, the maintenance test phone is required to enable or disable the Apparatus Diagnostic Test routines; therefore, perform steps 1 through 11. STEP PROCEDURE VERIFICATION IF VERIFICATION IS NOT OBTAINED 1 Place maintenance test phone Dial tone is returned. off-hook. 2 Dial the Diagnostic Test Access Recall dial tone is returned. Code. 3 Dial 3 to enable the Apparatus tests. Confirmation tone is returned. 4 Place the maintenance test phone None. on-hook. 5 Place the station under test off-hook. Dial tone is returned. 6 Dial the Test-Station Line Access Confirmation tone is returned. Code. 7 Place station under test on-hook. Ringing returned. If ringing is not heard, replace the station instrument to determine if it is defective. If ringing is still not heard, replace the associated sub- scriber line module (SLMA-0, SLMA-S, or S-416 PCB). 8 Pick up handset to answer test call. Test tone (1004Hz @ -16dbm) is returned. 9 Verify that the test tone level is cor- If the returned test tone level is weak, rect by using a TM.?. replace the instrument to determine if it is defective. If the test tone level increases considerably, replace the station instrument. If test tone level remains weak, the subscriber line cir- cuit is defective. Replace the as- sociated subscriber line module (SLMA-0, SLMA-S, or SLA16 PCB). 10 11 Place station under test on-hook. None. If no additional Test routines are to be performed, proceed as follows: Place maintenance test phone off-hook. Dial tone is returned. Dial the Diagnostic Test Access Code. Recall dial tone is returned. Dial 2 to disable test routine. None. Place maintenance phone on-hook, None. 4-36
SATURN IIE EPABX Maintenance and Troubleshooting A30808-X5130-DllO-l-6920 Issue 1, May 1986 pyyq 6 7 8 9 10 ==m -- l I I I Flb.5” = 31 T E 32 ANS IT , 1 a I I , 11 12 13 14 15 w 26 27 28 29 30 Figure 4.05 Attendant Console Keypad and Feature Button Depression Sequence 4-37
SATURN IIE EPABX A30808-X5130-DllO-l-8920 Maintenance and Troubleshooting Issue 1, May 1986 Table 4.14 Attendant Console Test , STEP PROCEDURE VERIFICATION IF tiERtFlcATi0~ IS NOT OBTAINED 1 Place maintenance test phone off-hook. Dial tone is returned. 2 Dial the Diagnostic Test Access Code. Recall dial tone is returned. 3 Dial 3 to enable the Apparatus Tests. Confirmation tone is returned. 4 Place maintenance test phone on-hook. None 5 At the Console under test, dial the At- Recall dial tone is returned, the access If reorder tone is returned, the Atten- tendant Console Test access code code is displayed momentarily, then dant Console Test routine is in use; when the console is in an idle state. the display changes to CONSOLE retry later. TEST and all button LEDs are extin- guished. 6 Depress the console’s keypad buttons All digits dialed are displayed (ac- If proper verification is not obtained or in the following sequence: 1, 2, 3, 4, cumulate). busy tone is returned, either: 5, 6, 7, 8, 9, 0, * and #. (1) buttons were depressed out of se- quence, (2) the console is defective, or (3) the PIMD is faulty. Retry the test. If proper verification is not obtained or busy tone is returned again, replace the associated PIMD PCB and retry the test. (1) If proper verification is obtained, replace the PIMD PCB. (2) If proper verification is not obtained or busy tone is returned, replace the console. 7 Depress the console’s feature buttons Each button LED lights when Same as step 6. in the sequence shown in Figure 4.05. depressed and extinguishes when the next button is depressed. 8 After the last button in the above se- Groups of eight of each of the display- If proper verification is not obtained or quence is depressed, depress any able characters are scrolled in the se- busy tone is returned, either: console button to initiate the display quence shown in Table 4.15. After the (1) the console is defective, or test. The display can be suspended by last character is displayed (under score (2) the PIMD is faulty. Retry the test. depressing any button on the console character), the display unit is cleared If proper verification is not obtained or and resumed in the same manner. and the following LEDs momentarily busy tone is returned again, replace light then extinguish in the following the associated PIMD PCB and retry sequence: the test. . . a) TRUNK GROUP STATUS 1 - 24 (1) If proper verification is obtained, b) SOURCE replace the PIMD PCB. c) DESTINATION (2) If proper verification is not obtained d) ALERT or busy tone is returned, replace the e) CW console. 9 MAJ ALM g) MIN ALM After the above indications are com- pleted, the following indications occur: Ringback tone is returned. All LEDs on the display assembly flash. The audible alerting device sounds at intervals. REMOVE HANDSET is displayed. 4-38 NOTES: 1. If the system option flag TSTDIAG has been enabled in the data base, the maintenance test phone is not required to enable and disable the Apparatus Test-routines; therefore, perform steps 5 through 9. 2. If the system option flag TSTDIAG has been disabled in the data base, the maintenance test phone is required to enable and disable the Apparatus Test routines; therefore, perform steps 1 through 10.