AT&T 4 ESS User manual

Task Oriented Practice
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ESS
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SWITCHING NETWORK
4
TITLE PAGE 000
TPG234-151-013
DEC 1995Issue 8

Copyright© 1995 AT&T
All Rights Reserved
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Process orders through your Technical Information Resourceb. Local Exchange Carriers (LEC):
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AT&T Network Systems Customer Education & Training Organization Issue 8 LPG
000PAGE 1 of 1
234-151-013
DEC 1995

Excessive Slips — In Your Office — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-139
DC-DC Converter — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-009
Acceptance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-002
Converter LED Lighted Condition — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-124
Automatic Power Monitor Test Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-126
All Pending TLP Searches Inhibited — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . TAP-114
Diagnostic Failure — Clear by Analyzing Raw Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-105
Diagnostic Failure — NCSU — Clear Using TLP Suspect Pack List . . . . . . . . . . . . . . . . . . . . . . . . . TAP-104
Diagnostic Failure — SCLK — Clear Using TLP Suspect Pack List . . . . . . . . . . . . . . . . . . . . . . . . . TAP-103
DS1 Sync Reference Signal — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-550
Blown Fuse — Not A1—A9 or B1—B8 (+24, +48 and +140 Volt Distribution) — Clear . . . . . . . . . . . . . . . . . . TAP-122
Circuit Pack — Except FB211 — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-500
Circuit Pack — FB211 — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-511
FB152 Pack LED Lighted Condition — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-125
Lamps — Power Switch — Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-522
. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
TASK INDEX LIST
Blown Fuse — Not A1—A9 or B1—B8 (+9 and +24 Volt Distribution) — Clear . . . . . . . . . . . . . . . . . . . . . TAP-118
Blown Fuse — A1—A9 or B1—B8 — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-123
THEN GO TO
IXL
PAGE 1 of 7
234-151-013 001
Issue 8 DEC 1995

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
Meter Solenoid Operate (MSO) Lamp and PHASE or PHASE LOCK OVEN TEMP Meter Reset Fault — Clear
Meter Solenoid Operate (MSO) Lamp, PHASE METER Reset, and PHASE LOCK OVEN TEMP Meter Reset — Test
THEN GO TO
Oscillator; 39B — Replace and Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-008
Power Alarm Circuits — Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-503
Power Switch — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-523
Meters — Phase Lock Control Panel — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-004
Maintenance Philosophy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAD-100
Phase Lock Oven Temperature Fault — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-129
. . . . . . . . . . TAP-127
. . . . . . . . DLP-514
Oscillator; Disciplined Rubidium — Replace and Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-011
Oscillator Out-of-Service (OSC OS) Lamp — Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-517
Phase Error — Clear — 39B Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-134
Power-0Ring Diodes — FB211 Circuit Pack — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-003
Repetitive Range Exceeded Message — NCSU — Clear 38B Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . TAP-140
Phase Error — Clear — Disciplined Rubidium Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-146
Repetitive Range Exceeded Message — NCSU — Clear Disciplined Rubidium Oscillator . . . . . . . . . . . . . . . . TAP-148
NCLK Chain PHASE METER Error — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-135
Oscillator; 39B — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-010
Oscillator; Disciplined Rubidium — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-012
PHASE LOCK OVEN TEMP Meter — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-513
REF STAT/FREE RUN Lighted Lamp — MCC System Alarms Panel — Clear . . . . . . . . . . . . . . . . . . . . . . . . TAP-138
R1 or PLS Fault — Clear — 39B Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-128
R1 or PLS Fault — Clear — Disciplined Rubidium Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-151
TASK INDEX LIST
Issue 8 DEC 1995
IXL
PAGE 2 of 7
234-151-013 001

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
CLEAR DGN FAILURE USING TLP SUSPECT PACK LIST - NCLK
CLEAR DGN FAILURE USING TLP SUSPECT PACK LIST - NCLK
CLEAR DGN FAILURE USING TLP SUSPECT PACK LIST - NCLK
CLEAR DGN FAILURE USING TLP SUSPECT PACK LIST - NCLK
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
Phase 3 First Failing Test and Any Phase Lock Temperature Meter Deflected Fully . . . . . . . . . TAP-129
TLP Abort — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
TLP Disk Queue Full — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-107
TLP Inhibit — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-109
TLP Queue Blockage — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-108
TLP Tape Acquisition Error — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-112
TLP Tape Not Mounted — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-113
TLP Tape Version x Does Not Match Version y — Diagnostic Failure — Clear . . . . . . . . . . . . . . . . . . . . TAP-111
Phase 4 First Failing Test and Any Phase Meter 2 or More Divisions From Zero . . . . . . . . . . TAP-135
TLP Pack List Indicates Only One Clock Chain Faulty . . . . . . . . . . . . . . . . . . . . . . . TAP-102
TLP Pack List Indicates More Than One Clock Chain Faulty . . . . . . . . . . . . . . . . . . . . TAP-136
Suspect Clock Chain — Diagnostic Failure — Isolate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-136
System Clock Time of Day — Daylight Saving Time Change — Update . . . . . . . . . . . . . . . . . . . . . . . . NTP-007
Switches — Phase Lock Control Panel — Replace . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-005
System Clock Time of Day — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . NTP-006
THEN GO TO
Sync Reference Signal — DS1 — Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . DLP-550
TASK INDEX LIST IXL
PAGE 3 of 7
234-151-013 001
Issue 8 DEC 1995

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
Note Column Contains NOTE 2
Note Column Contains NOTE 2
Note Column Contains NOTE 2
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUMMARY DATA
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUMMARY DATA
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUMMARY DATA
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUMMARY DATA
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aNULL PACK TEST GENERATED
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0001
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0002
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0004
ALL PENDING TLP SEARCHES INHIBITED
ANALY:TLPFILE:NCLK 0,CHAIN aABORTED
Note Column Contains NOTE 2
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN aSUSPECTED FAULTY EQUIPMENT
THEN GO TO
No Fuse Blown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-126
Fuse Blown — Not A1-A9 or B1-B8 (+9, +24 Volt Distribution) . . . . . . . . . . . . . . . . . . . TAP-118
Fuse Blown — Not A1-A9 or B1-B8 (+24, +48 and +140 Volt Distribution) . . . . . . . . . . . . . . TAP-122
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-114
. . . . . . . . . . . . . . . . . . . . . . . . . TAP-109
. . . . . . . . . . . . . . . . . . . . . . . . . TAP-108
. . . . . . . . . . . . . . . . . . . . . . . . . TAP-107
. . . . . . . . . . . . . . . . . . . . . . TAP-105
Fuse Blown — A1-A9 or B1-B9 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-123
TASK INDEX LIST IXL
PAGE 4 of 7
234-151-013 001
Issue 8 DEC 1995

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
TLP TAPE ACQUISITION ERROR
CURRENT TLP SEARCH ABORTED
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN 2
ANALY:TLPFILE:NCLK 0,CHAIN aTLP
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN a TLP
TTY Printout — DGN:SCLK 0, {IPUB a|CONT b|NCSU 0}PH c STF
TTY Printout — DGN:SCLK 0, {IPUB a|CONTR b|NCSU 0}PH c STF
ANALY:TLPFILE:SCLK 0 {IPUB a|CONTR b|NCSU 0}SUSPECTED FAULTY EQUIPMENT
ANALY:TLPFILE:SCLK 0 {IPUB a|CONTR b|NCSU 0}SUSPECTED FAULTY EQUIPMENT
TTY Printout — DGN:SCLK 0, {IPUB a|CONTR b|NCSU 0}PH cSTF
ANALY:TLPFILE:SCLK 0 {IPUB a|CONTR b|NCSU 0} SUSPECTED FAULTY EQUIPMENT
Note Column Contains NOTE 2
Code Column Contains NOTE 2
Note Column Contains NOTE 2
ALL PENDING TLP SEARCHES INHIBITED
WARNING;VERSION xDOES NOT MATCH EXPECTED VERSION y
REPT:TAPE MUST BE MOUNTED FOR FUNCTION TLP
TTY Printout — DGN:NCLK 0,CHAIN aPH bSTF
ANALY:TLPFILE:NCLK 0,CHAIN a0
MOUNT TAPE WITH FILE ID = f
TLP PROGRAM ABORTED
THEN GO TO
Fuse Blown-A1-A9 or B1-B8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-123
Fuse Blown-Not A1-A9 or B1-B8 (+9 and +24 Volt Distribution) . . . . . . . . . . . . . . . . . . TAP-118
Fuse Blown-Not A1-A9 or B1-B8 (+24, +48 and +140 Volt Distribution) . . . . . . . . . . . . . . . TAP-122
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
. . . . . . . . . . . . . . . . . . . . . . . TAP-111
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-112
. . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-113
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
TASK INDEX LIST IXL
PAGE 5 of 7
234-151-013 001
Issue 8 DEC 1995

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH c STF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 SUMMARY DATA
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 SUMMARY DATA
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 SUMMARY DATA
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 SUMMARY DATA
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0
TTY Printout — DGN:SCLK 0,IPUB a|CONTR b|NCSU 0 PH cSTF
TTY Printout — DGN:SCLK 0,NCSU 0 PH aSTF
ANALY:TLPFILE SCLK 0,NCSU 0 SUSPECTED FAULTY EQUIPMENT
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 NULL PACK TEST GENERATED
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0001
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0002
QUEUE ACCESS DENIED:DATA NOT RETAINED:CODE 0004
ALL PENDING TLP SEARCHES INHIBITED
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 ABORTED
TLP PROGRAM ABORTED
TTY Printout — DGN:SCLK 0, {IPUB a|CONTR b|NCSU 0}PH cSTF
ANALY:TLPFILE:SCLK 0 {IPUB a|CONTR b|NCSU 0}SUSPECTED FAULTY EQUIPMENT
TTY Printout — DGN:SCLK 0, {IPUB a|CONTR b} PH cSTF
Note Column Contains NOTE 2
ANALY:TLPFILE SCLK 0, {IPUB a|CONTR b} SUSPECTED FAULTY EQUIPMENT
THEN GO TO
. . . . . . . . . . . . . . . . . . . . . . TAP-104
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
. . . . . . . . . . . . . . . . . . . . . . . TAP-110
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-114
. . . . . . . . . . . . . . . . . . . . . . . . . . TAP-109
. . . . . . . . . . . . . . . . . . . . . . . . . . TAP-108
. . . . . . . . . . . . . . . . . . . . . . . . . . TAP-107
. . . . . . . . . . . . . . TAP-105
No Fuse Blown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-126
. . . . . . . . . . . . . . . . . TAP-103
TASK INDEX LIST PAGE 6 of 7
234-151-013
Issue 8 IXL
001
DEC 1995

. . . . . . . . . . . . . . . . .FIND YOUR JOB IN THE LIST BELOW
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 TLP
TLP TAPE ACQUISITION ERROR
CURRENT TLP SEARCH ABORTED
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 TLP
TTY Printout — DGN:SCLK 0, IPUB a|CONTR b|NCSU 0 PH cSTF
ANALY:TLPFILE SCLK 0, IPUB a|CONTR b|NCSU 0 TLP
WARNING:VERSION x DOES NOT MATCH EXPECTED VERSION y
. . . . . . . . . . . . . . . . . . . . . . . TAP-111
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-110
TTY Printout — REPT:NCSU 0:OSC RANGE EXCEEDED (Repetitive Messages) — Disciplined Rubidium Oscillator . . . . . . TAP-148
TTY Printout — REPT:NCSU 0:FREERUN 10 MINUTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-138
TTY Printout — OP:DGSTAT h,SLIP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-139
MOUNT TAPE WITH FILE ID = F . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-112
REPT:TAPE MUST BE MOUNTED FOR FUNCTION TLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . TAP-113
TTY Printout — REPT:NCSU 0:OSC RANGE EXCEEDED (Repetitive Messages) — 39B Oscillator . . . . . . . . . . . . . . . TAP-140
ALL PENDING TLP SEARCHES INHIBITED
TASK INDEX LIST
THEN GO TO
PAGE 7 of 7
234-151-013
Issue 8 IXL
001
DEC 1995

No acceptance test procedures are required for this frame.
The readiness of this frame to become a part of the working
system was established by the successful completion of
Installation Handbook test procedures.
ACCEPTANCE
234-151-013 002
Issue 8 DEC 1995
NTP
PAGE 1 of 1
I I I

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
1
2
CHECK POWER-ORING DIODES, FB211 CIRCUIT PACK
Check for Open Diodes in FB211 Circuit Pack
Check for Shorted Diodes in FB211 Circuit Pack DLP-535
DLP-534
NTP
PAGE 1 of 1
234-151-013 003
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
1
3
4
REPLACE PHASE LOCK CONTROL PANEL METERS
2 Depress ROS/OFF Switch
On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
On Power Switch, Rotate ROS/OFF Switch to ROS
Replace PHASE Meter or PHASE LOCK OVEN TEMP Meter
Response: OFF NORM and PWR OFF Lamps Light
Response: OS and OFF NORM Lamps Light, ACK Lamp Lights Momentarily
Response: OFF NORM and OS Lamps Extinguish
—
—
—
DLP-516
NTP
PAGE 1 of 1
234-151-013 004
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
1
2
REPLACE PHASE LOCK CONTROL PANEL SWITCHES
3 On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
On Power Switch, Rotate ROS/OFF Switch to ROS
Replace Meter Solenoid Operate (MSO) Switch, Phase Lock Shunt (PLS) Switch, or OSC OS Lamp Assembly
Response: OFF NORM and OS Lamps Extinguish
Response: OS and OFF NORM Lamps Light, ACK Lamp Lights Momentarily —
—
DLP-515
NTP
PAGE 1 of 1
234-151-013 005
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
CHECK SYSTEM CLOCK TIME OF DAY
Call U.S. Bureau of Standards Time Announcement, 303-499-7111, and Listen for Time Announcements
Which Occur Every Minute on the Minute (Ignore Hours Announced; They Are in Greenwich Mean Time)
Type in Local Mode (but Do Not Send) OP:CLK!
If System Clock Time Printed Is Greater Than Plus or Minus One Second From Minute Announced,
Correct System Clock Time of Day Between 2:02 AM and 2:12 AM
If System Clock Time Was Corrected, Notify Network Management of Time Change
If Time Is Changed in AMA Supported Office, Record Time Change on AMA Transmittal Form, E-5233
At Next Time Announcement, Remember the Minute Announced, and the Instant the Tone Is Heard, Depress
Return Cursor To Start of Message
Hang Up U.S. Bureau of Standards Call
Send Key
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5
6
7
8
—
—
—
—
—
—
DLP-518
NTP
PAGE 1 of 1
234-151-013 006
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
UPDATE SYSTEM CLOCK TIME OF DAY, DAYLIGHT SAVING TIME CHANGE
00 Seconds. Example: SET:CLK:TIME aa bb 00! Where bb = Minute Announced Plus One
At Next Time Announcement, Instant Tone Is Heard; Depress Send Key
aa = Hour of Night + 1 When Going to Daylight Saving Time
aa = Hour of Night — 1 When Returning From Daylight Saving Time
Return Cursor to Start of Message
If System Clock Time Printed Is Greater Than Plus or Minus One Second From Time Announced, Correct
System Clock Time of Day
Hang Up Bureau of Standards Call
If AMA Supported Office, Record Time Change on AMA Transmittal Form, E-5233
At Next Time Announcement, Complete Message (but Do Not Send) By Adding Minute Announced Plus One and
Enter Local Mode Partial Message SET:CLK:TIME aa
Call U. S. Bureau of Standards Time Announcement, 303-499-7111, and Listen for Time Announcements
Which Occur Every Minute on the Minute (Ignore Hours Announced; They Are in Greenwich Mean Time)
Notify Network Management of Impendent Time Change
CAUTION: System Clock Update Must Be Accomplished Between 2:02 AM and 2:12 AM. Review Procedure and
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5
6
7
8
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—
—
—
—
—
DLP-518
NTP
PAGE 1 of 1
234-151-013 007
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
If Manual Update Is Required, Align 39B Oscillator Using Open Loop Method
Connect Oscillator Manual Adjustment Unit (OMAU) to Oscillator
Stabilize 39B Oscillator
Install 39B Oscillator
Check Full Frequency Range of Oscillator
Disconnect Oscillator Manual Adjustment Unit From Oscillator
On Clock Chain Power Switch, Rotate ROS/OFF Switch to ROS
CAUTION: Clock Chain of Oscillator Being Checked Must be Removed From Service And Then Powered Down
Remove 39B Oscillator
Check 39B Oscillator
Calibrate Scope
1
2
3
4
8
9
5
7
6
10
11
REPLACE AND CHECK 39B OSCILLATOR
Response: OFF NORM and OS Lamps Extinguish
Response: OS and OFF NORM Lamps Light, ACK Lamp Lights Momentarily —
—
DLP-537
DLP-519
DLP-538
DLP-527
DLP-532
DLP-531
DLP-529
DLP-520
DLP-525
NTP234-151-013
DEC 1995Issue 8
PAGE 1 of 1 008

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
Replace Converter
If Replaced Converter Is Type J87389, Adjust Associated 39B Oscillator Frequency2
3
1
REPLACE DC-DC CONVERTER
Rotate ROS/OFF Switch to Normal Position
Response: OFF NORM and OS Lamps Extinguish —
DLP-509
DLP-512
NTP
PAGE 1 of 1
234-151-013 009
Issue 8 DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
Disconnect Oscillator Manual Adjustment Unit From Oscillator
Connect Oscillator Manual Adjustment Unit to J20 Connector of 39B Oscillator
If Manual Update is Required, Align 39B Oscillator Using Open Loop Method
On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
CHECK 39B OSCILLATOR
Check Full Frequency Range of Oscillator
Check 39B Oscillator
Calibrate Scope
CAUTION: Clock Chain Having Oscillator Checked Must Be Powered Down
1
2
3
4
5
6
7
Response: OFF NORM and OS Lamps Extinguish —
DLP-532
DLP-531
DLP-538
DLP-529
DLP-520
DLP-527
PAGE 1 of 1
234-151-013
Issue 8 NTP
010
DEC 1995

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
Connect Oscillator Manual Adjustment Unit (OMAU) to Oscillator
Disconnect Oscillator Manual Adjustment Unit From Oscillator
Check Full Frequency Range and Alarm Bits of DRO Oscillator
If Manual Update Is Required, Align DRO Oscillator Using Open Loop Method
Check DRO Oscillator Status Indicators
On Clock Chain Power Switch, Rotate ROS/OFF Switch to ROS
CAUTION: Clock Chain of Oscillator Being Checked Must be Removed From Service And Then Powered Down
REPLACE AND CHECK DISCIPLINED RUBIDIUM OSCILLATOR
Remove DRO Oscillator
Install DRO Oscillator
Check DRO Oscillator
Calibrate Scope
1
2
3
4
8
9
5
7
6
10
11
Response: OS and OFF NORM Lamps Light, ACK Lamp Lights Momentarily
Response: OFF NORM and OS Lamps Extinguish
—
—
DLP-532
DLP-531
DLP-545
DLP-541
DLP-542
DLP-546
DLP-543
DLP-548
DLP-529
NTP
PAGE 1 of 1
234-151-013
DEC 1995Issue 8
011

FOR DETAILS, GO TODO THE ITEMS BELOW IN THE ORDER LISTED . . . . . . . . . .
Disconnect Oscillator Manual Adjustment Unit From Oscillator
On Power Switch, Rotate ROS/OFF Switch Fully Counterclockwise
CAUTION: Clock Chain Having Oscillator Checked Must Be Powered Down
Connect Oscillator Manual Adjustment Unit to J20 Connector of DRO Oscillator
Check Full Frequency Range and Alarm Bits of DRO Oscillator
If Manual Update is Required, Align DRO Oscillator Using Open Loop Method
Check DRO Oscillator Status Indicators
Calibrate Scope
1
2
3
4
7
Check DRO Oscillator5
6
8
CHECK DISCIPLINED RUBIDIUM OSCILLATOR
Response: OFF NORM and OS Lamps Extinguish —
DLP-532
DLP-531
DLP-529
DLP-543
DLP-546
DLP-542
DLP-548
PAGE 1 of 1
234-151-013
Issue 8 NTP DEC 1995
012