45173_001.pdf

DEPARTMENTOF

TRANSPORTATION

US COAST GUARD

CG.~4S5 711'[i1' INDEX OF MAINTENANCE fj d PROCEDURES (IMP)

IMP SERIAL NUMBER

45173/001 REV 04

DATE

01 JUL 04 PAGE~ OF ~

EQUIPMENT

Radars, Surface Search AN/SPS-73(V)1 Radar Set

REFERENCE PUBLICATIONS

SSR O&M T10-97-01, SSR O&M T1 0-95-1 01

CONFIGURATION

AS-4474/SPS-73(V) (2)

AB-1401/SPS-73(V) (2)

RTR-046/25KW /SPS-73(V) (2)

TS-4500/PM-30/SPS-73(V) (2)

OJ-727(V)5/SPS-73(v) (2) c .

L A S S

1722037 -100/SPS-73(V)

OJ-727 (V)6/SPS-73(V) (2)

OJ-727 (V)8/SPS-73(V)

1721801-100/SPS-73(V)

MPC

SERIAL NUMBER

PROCEDURE SUMMARY FREQUENCY SKILL

LEVEL

MAN-

HOURS

RELATED

MAl NT.

Scheduling Aids:

1. Perform MPC R-1 when directed by MPC M-1.

45173/AAAA 01 I 1. Clean and Inspect Antenna Assembly I Q-1 I 1 TECHI 4.0

2. Clean and Inspect Stand Alone Operator Position (SAOP)

3. Clean and Inspect Radar Transmitter/Receiver

45173/AAAB*03 I 1. Test AN/SPS-73(V) Performance. I

M-1 11 TECH! 1.0

2. Inspect SAOP Air Filters and Display Screens

45173/AAAC*02 I 1. Clean Operator Position (SAOPITBOP) Air Filters I R-1 11 TEC 0.5

2. Clean Operator Position (SAOPITBOP) Display Screens

U.S. COAST GUARD

CG.S4S6

/I!IrI MAINTENANCE I

DATE

,*PROCEDURE CARD (MPC) 28MAY 02 PAGE

SKILL LEVELEQUIP GROUP

Surface Search Radar

SYSTEM SUB SYSTEM

AN/SPS-73(V1 ) 1 Technician

PROCEDURE SUMMARY

1. \.,;Iean and InspectAntennaAssembly

2. Clean and Inspect Stand Alone Operator Position (SAOP)

3. Clean and Inspect Radar Transceiver/Receiver

MPC SERIAL NUMBER

45173/AAAA 016

OF

MAN HOURS

4.0

FREQ. CODE

Q-1

SAFETY PRECAUTIONS

1. Comply with U.S. Coast Guard Safety Precautions, Commandant Instruction M10550.25A, Chapter 4.1.

2. Comply with unit regulations for completion of work aloft.

3. High voltage, high capacitance components may contain voltages dangerous to life. Discharge high voltage, high capacitance components to ground using shorting probe.

4. Ensure that all power external to the SAOP is removed prior to maintenance. This includes Gyrocompass and Speed log synchro interface that provide 115 VAC directly to the SAOP.

5. Items contaminated with hazardous material should be disposed of using the disposal method listed for that hazardous material on the

CGPMS Hazardous Materials Card.

TOOLS, PARTS, MATERIALS, TEST EQUIPMENT

TOOLS MATERIALS

1. Socket Set, metric, 4 - 19 mm 1. [0294] Cloth, cleaning

2. [1187] Screwdriver, flat tip, 1/8" tip 2. [1144] Tag, safety

3. [1198] Screwdriver, flat tip, 6" 3. [0055] Antiseize compound

4. [3104] Screwdriver, flat tip, 8" CGPMS Hazardous Materials Handling Guide

5. [3434] Screwdriver, cross tip, #2, 6" (HMHG) Group 8, Disposal Method 1

6. [3879] Screwdriver, cross tip, #2, 8" 4. [1254] Silicone compound

7. [3861] Driver, nut, 3/16" CGPMS Hazardous Materials Handling Guide

(HMHG) Group 11, Disposal Method 1

5. [0365] Detergent

6. [2376] Water

MISCELLANEOUS

1. [0268] Vacuum Cleaner, portable with nonmetallic nozzle [1608] Brush, sash and trim, 2" [1064] Probe, safety shorting CGPMS Hazardous Materials Card

2.

3.

4.

DEPARTMENTOF . I

DATE

TRANSPORTATION . MAINTENANCE

g~'5~~AST GUARD PROCEDURE CARD (MPC) 28 MAY 02

TOOLS, PARTS, MATERIALS, TEST EQUIPMENT (Continued)

TOOLS MATERIALS

7. [0038] Denatured Alcohol CGPMS Hazardous Materials Handling Guide (HMHG) Group 15, Disposal Method 3

NOTE:

PAGE

MPC SERIAL NUMBER

45173/AAAA 01

OF

MISCELLANEOUS

Numbers in brackets can be referenced to Coast Guard Standard PMS Material Identification Guide (CGSPMIG) for stock number identification.

PROCEDURE

Preliminary:

a. Set system power to OFF.

b. De-energize and tag associated circuit breaker(s) at primary power distribution panel(s).

c. De-energize and tag Gyrocompass and Speed log synchro interfaces that provide.115 VAC directly to the SAOP.

1.

WARNING:

Clean and Inspect Antenna Assembly

a. Remove Antenna Pedestal cover being careful not to damage gasket.

High voltage, high.capacitance components may contain voltages dangerous to life. Discharge high voltage, high capacitance components to ground using shorting probe.

b.

c.

d.

e.

Discharge high voltage, high capacitance components to ground using shorting probe.

Wipe accessible surfaces with clean, lint free cloth.

Remove dust and dirt using vacuum cleaner and brush.

Inspect interior of antenna looking for:

(1) Evidence of excessive heat.

(2) Damaged components.

(3) loose connections.

(4) Cracked or frayed insulation.

(5) Worn or damaged gears.

11111111111111111111111111111111111111111111111111111111111111111111111111111111

45173/AAAA0102

DlPARTMENT Of I. CTRANSPORTATION' . MAINTENAN E ~(:'5~~tSTGUARD - PROCEDURE CARD (MPC)

PROCEDURE CONTINUED

(6) Presence of foreign matter.

(7) Corrosion.

(8) Other damage.

Inspect pedestal cover rubber sealing gasket for:

(1) Deterioration.

(2) Rips, tears and deformities.

(3) Replace as needed.

Apply light coat of silicone compound to pedestal cover gasket surfaces.

Reinstall pedestal cover ensuring gasket forms a watertight seal.

Inspect exterior of pedestal looking for:

(1) Evidence of corrosion.

(2) Presence of foreign matter.

(3) Loose or missing hardware.

(4) Inadequate or deteriorated preservative covering cables at entrance to pedestal stuffing tubes.

If pedestal mounting bolts or hardware shows signs of corrosion, remove, clean, apply antiseize compound and reinstall.

Clean surface of Antenna Pedestal and Antenna Array using a clean cloth dampened with a solution of fresh water and detergent.

Repeat steps 1.a. through 1.k. for second installed Antenna Assembly.

2.

WARNING:

DATE

28 MAY 02 6

MPC SERIALNUMBER

45173/AAAA 013

PAGE OF

f.

g.

h.

i.

j.

k.

I.

Clean and Inspect Stand Alone Operator Positions (SAOP)

a. Remove front and back bottom and rear top console covers from Main SAOP.

High voltage, high capacitance components may contain voltages dangerous to life. Discharge high voltage, high capacitance components to ground using shorting probe.

b.

c.

d.

Discharge high voltage, high capacitance components to ground using shorting probe.

Wipe accessible surfaces with a clean, lint free cloth.

Remove dust and dirt from SAOP using vacuum cleaner and brush. Ensure each CCA is removed from VME Card Cage, cleaned and inspected, then replaced in its correct slot.

Inspect interior and subassemblies of main SAOP looking for:e.

DEPARTMENTOf ,-TRANSPORTATION. . . MAINTENANCE u.s. COAST GUARD

CG.5456 . PROCEDURE CARD (MPC)

PROCEDURE CONTINUED

(1) Evidence of excessive heat.

(2) Damaged components.

(3) Loose connections.

(4) Cracked or frayed insulation.

(5) Presence of foreign matter.

(6) Corrosion.

(7) Other damage.

Remove spacer cards from slots two, nine and twenty of VME Card Cage.

Remove tag(s) and re-energize associated circuit breaker(s) at primary power distribution panel and apply power to SAOP.

Observe proper operation of fan assemblies located in base of VME card basket. If one or more fans are inoperative, repair or replace as necessary.

Remove power from SAOP, de-energize and tag associated circuit breaker(s) at primary power distribution panel.

Replace spacer cards in slots two, nine and twenty of VME Card Cage.

Remove dust and dirt from keyboard using vacuum cleaner and brush.

Clean track ball.

(1) Remove eight external mounting screws and three screws holding ball in place.

(2) Carefully remove assembly and turn it over, being careful not to damage interconnecting cables

In the following steps, do not remove screws on the bottom of the assembly. They are attached to printed circuit boards inside box.

NOTE 1:

DATE

28 MAY 02

MPC SERIALNUMBER

45173/AAAA 014 6

PAGE OF

f.

g.

h.

i.

j.

k.

I.

m.

n.

o.

(3) Disconnect plug on face plate and set face plate aside.

(4) Remove screws holding ball cover. Set ball cover aside and remove Teflon cover. Wipe Teflon cover clean and set aside.

(5) Remove ball. Clean rollers with Q-tips or clean rag and alcohol. Remove internal dust and debris.

(6) Reassemble track ball assembly in reverse order.

Perform visual inspection of air filter(s) and display screen. If air filter(s) and display screen require cleaning, perform MPC R-1.

Reinstall front and back bottom and rear top console covers on Main SAOP.

Repeat steps 2.a. through 2.n. for remaining SAOPs.

45173/AAAA0104

~~~~~~~:T~TI?:N

/8 MAINTENANCE

I

DATE

~i;.5~~tSTGUARD '* PROCEDURE CARD (MPC) 28 MAY 02

PROCEDURE CONTINUED

PAGE

5 6

MPC SERIAL NUMBER

45173/AAAA 01

3.

WARNING:

NOTE 2:

OF

Clean and Inspect Radar Transmitter/Receiver

a. Remove T/R assembly access covers.

b.

High voltage, high capacitance components may contain voltages dangerous to life. Discharge high voltage, high capacitance components to ground using shorting probe.

Discharge high voltage, high capacitance components to ground using shorting probe.

c.

d.

e.

Do not wear or use magnetic materials when cleaning and inspecting interior of Radar Transceiver/Receiver. Magnetron damage can result if touched by magnetic materials.

Wipe accessible surfaces with a clean, lint free cloth.

Remove dust and dirt using vacuum cleaner and brush.

Inspect interior and subassemblies looking for:

(1) Evidence of excessive heat.

(2) Damaged components.

(3) Loose connections.

(4) Cracked or frayed insulation.

(5) Loose or missing hardware.

(6) Corrosion.

(7) Presence of foreign matter.

(8) Other damage.

Reinstall T/R assembly access covers.

Repeat steps 3.a. through 3.f. for remaining Radar Transmitter/Receiver.

Remove tag(s) and re-energize associated circuit breaker(s) at primary power distribution panel.

Return equipment to current readiness condition.

Comply with own ship/station procedures for handling disposal of contaminated towels, absorbents, containers, and clothing, if applicable.

f.

g.

h.

i.

j.

45173/AAAA0106

OEPARTMENTOf . MAINTENANCE

DATE MPC SERIAL NUMBER

TRANSPORTAnON

U.S.COASTGUARO

. PROCEDURE CARD (MPC) 45173/AAAA 01CG-5456 28 MAY 02 PAGE 6 OF 6

THIS PAGE INTENTIONALLY BLANK.

DEPARTMENTOf TKANSPORTAnON

us. COAST GUARD

CG.5456

- MAINTENANCE

I

DATE

.PROCEDURE CARD (MPC) 01 JUl04 OF

EQUIP GROUP

Surface Search Radar

SYSTEM SUB SYSTEM

PAGE

SKILL LEVEL

1 4

MPC SERIAL NUMBER

45173/AAAB* 03

AN/SPS-73(V) all 1 Technician

MAN HOURS

1.0

FREQ. CODE

M-1

PROCEDURE SUMMARY

1.

2.

Test AN/SPS-73(V)Performance.

Inspect SAOP Air Filters and Display Screens.

SAFETY PRECAUTIONS

1. Comply with U.S. Coast Guard Safety Precautions, Commandant Instruction M10550.25A, Chapter 4.1.

TOOLS, PARTS, MATERIALS, TEST EQUIPMENT

None

PROCEDURE

NOTE 1: Perform prior to getting underway.

Preliminary:

a. Set Master stand-alone operator position (SAOP) front panel switches as follows:

(1) SAOP POWER ON.

(2) Radar to POWER ENABLE.

(3) Antenna to ROTATE ENABLE.

b. Ensure start-up procedures, heading initialization and role assignments have been selected before proceeding.

c. If RT POWER light is green, go to next step. If red, set RT POWER button on.

(1) From the time RT POWER button became green, a magnetron warm-up countdown (X-Band 60 second, S-Band 180 seconds) appears in PPI area.

(2) When countdown is complete, radar state label in screen lower right hand corner will change from ON to STBY.

(3) Click ROT/RAD button in radar control block.

(4) Observe radar state label changes from STBY to ROT/RAD and color changes to green.

~~:~~~~~TN}TI~~ IS' MAINTENANCE

~J.5~~6ASTGUARD fj. PROCEDURE CARD (MPC)

PROCEDURE CONTINUED

DATE

01 JUL 04

MPC SERIAL NUMBER

45173/AAAB*032 4

PAGE OF

1. Test AN/SPS-73(V)Performance.

NOTE 2: Due to software differences between systems, technicians will have to know how to call up the Maintenance Menu to perform some of these operations. On certain software versions, this requires a password. As required, the technician should call up the Maintenance Menu before continuing.

a.

b.

c.

d.

e.

f.

g.

h.

Set image gain slider to 75%.

Locate main menu bar (top of screen) and click on SYSTEM. A pull-down menu will appear.

Select MAINTENANCE and enter PASSWORD.

Click on ALL CURRENT PARAMETERS. A pop-up menu appears.

Click on TXlRX (Tab 5 of 5).

Click PERF. MON. to ON.

Click on SIGNAL (Tab 4 of 5).

Record the following for later entry:

(1) Image Gain:

(2) Image Bias:

Set controls as follows:

(1) RANGE: 24NM

(2) STC: OFF (Minimum)

(3) FTC: OFF (Minimum)

(4) IR: OFF (Minimum)

(5) RADAR GAIN: 100%

(6) IMAGE GAIN:* MAXIMUM

(7) IMAGE BIAS:* MINIMUM

(*Select SIGNL tab, ensure IMAGE AGC is OFF. Ensure VIDEO TYPE is set to LOG.)

Four arcs should appear at 1800 Relative starting at approximately 12 miles. Check radar performance as follows:

(1) When overall performance is normal, four arcs, of which the innermost is located at 12 NM with 2nd to 4th arcs following outwarc at about 2.0 NM intervals, appear approximately aft of ship's heading (refer to table 1 and table 2).

i.

j.

45173/AAAB0302

~~~~~~~~;TI~N

I II. MAINTENANCE

~~.5~~6A5TGUARD fj - PROCEDURE CARD (MPC)

PROCEDURE CONTINUED

NOTE 3:

NOTE 4:

NOTE 5:

DATE

01 JUL 04

MPC SERIAL NUMBER

45173/AAAB*033 4

PAGE OF

As radar magnetron ages, range and number of arcs change representing degree of performance loss. Performance of transmitting system is related to range to innermost arc, while receiving syste.mcan be evaluated by number of arcs displayed.

Additionally, two voltage readings in the Maintenance Menu will provide good information about the condition of the magnetron and the receiver.

(2)

(3)

Record Range to innermost arc Transmitter has lost power and magnetron replacement (corrective maintenance) may be required when innermost ring is at or near nine mile range.

Record number of arcs. Receiver has lost sensitivity when three of four rings are visible after adjusting gain and brilliance.

Range to Innermost Arc Transmitter Loss Number of Arcs Receiver Loss 12 nm 0 dB 4 0 dB 9 nm 3 dB 3 3 dB 6 nm 6 dB 2 6 dB 3 nm or less 10 dB or more 1 9 dB or more nil 12 dB or more Table 2. Monitoring ReceiverTable 1. MonitoringTransmitter

Innermost arc is shifted 1 NM inward for every 1 dB loss of transmitter performance.

Number of arcs is reduced by one for every 3 dB loss of receiver performance.

k.

I.

m.

n.

o.

p.

q.

Return IMAGE GAIN and IMAGE BIAS to values recorded in step h.(1) and h.(2).

Click PERF. MON to OFF. Click on OK to close RADAR PARAMETERS menu.

Change Range Scale to 12 NM.

Set ROT/RAD button ON. Allow radar to warm up for at least 15 minutes.

Click TxlRx tab. TxlRx folder will be displayed.

Read and record RF Tune RB Voltage. The reading should be approximately 3.2 V.

In the TXlRx folder, click OK to exit back to All Current Parameters Menu

TRANSPORTATlON

U.S. COAST GUARD

CG-5456 .. MAINTENANCE I DATE

fj' PROCEDURE CARD (MPC) I 01 JUL 04

MPC SERIAL NUMBER

PAGE 4 OF 4 45173/AAAB* 03

PROCEDURECONTINUED

r. Perform the procedures necessary to get to the MAINTENANCEMENU.

s. In the Maintenance Menu, clickBITtab. Bitfolder is displayed.

t. Read and record RT Magnetron voltage. Reading should be between 4.9V and 7.0V (6.7V typical).

u. Read and record RT Magnatron transmit hours. Replace Magnatron when transmit hours reach 3000 hours.

v. Read and record MICread back voltage. MICreading should be approximately 2.4V.

w. Return Radar to normal operation.

x. Repeat steps 1.a. through 1.v. for remaining radar system(s).

2. Inspect SAOP Air Filters and Display Screens.

a. Perform visual inspection of air filters and display screens. Ifair filters and display screens require cleaning, perform MPC R-1.

b. Return equipment to current readiness condition.

RECORD CARD

DATE Step 1.j.(2) Range Inner Arc N.M.

Step 1.j.(3) Number of Arcs N.M.

Step 1.p.

RB Voltage N.M.

Step 1.t.

RT Mag Voltage N.M.

Step 1.u.

RT Mag Hours

Step 1.v.

MIC Voltage N.M

45173/AAAB0304

DEPARTMENT Of

US COAST GUARD

CG.5456

- MAINTENANCE

I

DATE

IIiifIPROCEDURE CARD (MPC) 17 JUl 03 1 2

MPC SERIAL NUMBER

45173/AAAC* 02

EQUIP GROUP

Surface Search Radar

SYSTEM SUB SYSTEM

PAGE -

SKILL LEVEL

OF

AN/SPS-73(V) all 1 Technician

MAN HOURS

0.5

FREQ. CODE

R-1

PROCEDURE SUMMARY

1.

2.

Clean Operator Position (SAOP/TBOP)AirFilters.

Clean Operator Position (SAOP/TBOP) DisplayScreen.

SAFETYPRECAUTIONS

1. Complywith U.S. Coast Guard .Safety Precautions, Commandant Instruction M10550.25A, Chapter 4.1.

2. Avoideye and skin contact withdetergents/soaps.

TOOLS, PARTS, MATERIALS,TEST EQUIPMENT

TOOLS

1. [1198] Screwdriver, flat tip, 6"

MATERIAL

1. [2276]Pail,utility

2. [0294] Cloth, cleaning

3. [2376] Water, fresh

4. [9832] Glass cleaner

5. [0365] Detergent, General purpose

6. [6004]BlueFilterMaterialCG4130-01-509-2509

MISCELLANEOUS

1. [0268] Cleaner, vacuum, electric w/non-metallicnozzle

NOTE: Numbers in brackets can be referenced to Coast Guard Standard PMS Material IdentificationGuide (CGSPMIG)for stock number identification.

PROCEDURE

NOTE1: Perform when directed by MPC R-1.

1. Clean Operator Position (SAOP/TBOP) Air Filters

a. Removeairfilteraccess coverfrom SAOPfront panel.

CAUTION: Exercise care not to disturb EMI shield when removing air filters.

DEPAR1MENl OF I. I

DATE

lRANSPOR1ATION '/ii1' MAINTENANCE 17 JUL 03u.s. COASl GUARD ~

CG.5456 'PROCEDURE CARD (MPC)

PROCEDURE CONTINUED

b. Remove air filters and vacuum using reverse airflow.

c. Inspect filters for cleanliness. Clean or replace as necessary. Replace blue filter materials semi-annually or when material deterioration is evident. Ensure metallic mesh filteris not fraying as loose fibers might be drawn into system. If additional cleaning is required:

WARNING:

d.

e.

NOTE 2:

CAUTION:

2 2

MPC SERIALNUMBER

45173/AAAC* 02

PAGE OF

Avoid eye and skin contact with detergents/soaps.

Wash blue filter material and metallic mesh filer in a solution of fresh water and detergent.

Rinse filters with fresh water.

CAREFULLY squeeze (DO NOT WRING) excess water from blue filter materials and dry filters careful not to damage fragile filter elements.

(4) Allow filters to dry thoroughly.

Reinstall air filters.

Reinstall air filter access cover.

(1) (2)

(3) using low pressure air being

An EMI filter is located in back of SAOP and is designed for electronic interference. Removal and cleaning are not required. Air flows out of this filter when power is applied. When power is off, filters will not stop dust and small particles from entering.

Never use commercial wipes to clean cathode ray tube face since commercial wipes often contain fiberglass or other abrasive materials. Microscopic scratches caused by abrasive materials accumulate over years and can affect viewing clarity.

Clean Operator Position (SAOPITBOP) Display Screen.

a. Clean light accumulations of dust and dirt from display screen surface with a soft, damp cloth. For heavy accumulations of dust, dirt or other foreign matter, apply an approved glass cleaner and wipe with a soft clean cloth.

b. Return equipment to readiness condition.

2.

45173/AAAC0202