Maintenance Manual
LBI-38551C
MASTR® II Site Equipment
12/24V Power Supply
19A149979P1 - 120 VOLT/60 Hz
19A149979P2 - 230 VOLT/50 Hz
CAUTION
THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALIFIED PERSONNEL ONLY. TO AVOID ELECTRIC SHOCK DO NOT PERFORM ANY
SERVICING OTHER THAN THAT CONTAINED IN THE OPERATING INSTRUCTIONS UNLESS YOU ARE QUALIFIED TO DO SO. REFER ALL
SERVICING TO QUALIFIE D SERVICE PERSONNEL
WARNING:
POSE THIS PRODUCT TO RAIN OR MOISTURE.
CAUTION:
PLUG WITH AN EXTENSION CORD, RECEPT ACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
TO PREVENT FIRE OR ELECTRIC SHOCK HAZARD. DO NOT EX-
TO PREVENT ELECTRIC SHOCK DO NOT USE THIS (POLARIZED)
LBI-38551C
TABLE OF CONTENTS
IMPOR TANT SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
CIRCUIT ANALYSIS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
OUTLINE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
ASSEMBLY DIAGRAMS
60 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
50 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
SCHEMATIC DIAGRAMS
60 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
50 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Page
PARTS LIST
60 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
50 Hz Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
NOTICE!
Repairs to this equipment should be made only by an authorized service technician or facility designated by the supplier. Any
repairs, alterations or substitution of recommended parts made by the user to this equipment not approved by the manufacturer
could void the user’s authority to operated the equipment in addition to the manufacturer’s warranty.
This manual is published by
graphical errors, inaccuracies of current information, or improvements to programs and/or equipment, may be made by
Inc.,
at any time and without notice. Such changes will be incorpora ted into new editions of this manual. No part of this manual may be reproduced or trans-
mitted in any form or by any means, electronic or mechanical, including photocopying and recording, for any purpose, without the express written permission
M/A-COM Private Radio Systems, Inc.
of
Copyright © 1992 - 2002, M/A-COM Private Radio Systems, Inc. All r ights reserved.
M/A-COM Private Radio Systems, Inc.,
without any warranty. Improvements and changes to this manual necessitated by typo-
M/A-COM Private Radio Systems,
2
IMPORTANT SAFETY
INFORMATION
1. SAVE THIS MANUAL - It contains important
safety and operating instructions.
2. Before using the product, please follow and adhere
to all warnings, safety and operating instructions
located on the product and in the manual.
3. DO NOT expose product to rain, snow or other
type of moisture.
LBI-38551C
12. To reduce risk of electric shock, unplug unit from
outlet before attempting any maintenance or cleaning.
13. DO NOT operate this product with covers or panels removed. This unit does not contain any user
serviceable components.
14. Use only fuses of the correct type, voltage rating
and current rating as specified in the parts list. Failure to do so can result in fire hazard.
4. Care should be taken so objects do not fall or liquids do not spill into the product.
5. DO NOT expose product to extreme temperatures.
6. DO NOT use auxiliary equipment not recommended or sold by the manufacturer. To do so may
result in a r isk of fire, electric shock or injury to
persons.
7. To reduce risk of damage to electrical cord, pull by
plug rather than cord when disconnecting unit.
8. Make sure the cord is located so it will not be
stepped on, tripped over or otherwise subjected to
damage or stress.
9. An extension cord should not be used unless absolutely necessary. Use of an improper extension
cord could result in a risk of f ire and elec tr ic shock.
If an extension cord must be used, make sure:
a. That pins on the plug of the extension cord are
the same number, size and shape as those of
the plug on the power supply.
15. GROUNDING AND AC POWER CORD CONNECTION - To reduce risk of electrical shock use
only a properly grounded outlet. The unit is
equipped with an electric cord having an equipment - grounding conductor and a grounding plug.
Be sure the outlet is properly installed and
grounded in accordance with all local codes and
ordinances.
16. DANGER - Never alter the AC cord or plug. Plug
into an outlet properly wired by a qualified electrician. Improper connection or loss of ground connection can result in risk of an electrical shock.
17. The Model 19A149979P2 is for use on a circuit
having a nominal rating of 230 Vac and is factory
equipped with a specific electric cord to permit
connection to an acceptable electric circuit. A plug
meeting local electrical codes must be supplied by
the customer. Make sure the unit is connected to an
outlet having the same configuration as the plug.
No adapter should be used with this unit.
NOTE
b. That the extension cord is properly wired in
good condition, and
c. That the wire size is large enough for AC am-
pere rating of unit.
10. DO NOT operate unit with a damaged cord or plug
- replace th em immediat ely.
11. DO NOT operate this product in an explosive atmosphere unless it has been specifically certified
for such operatio n.
A ferroresonant power supply is designed to
work specifically at a given frequency. The 60
and 50 Hz supplies should be used at their
nominal frequency ± 2 Hz.
3
LBI-38551C
SPECIFICATIONS*
OUTPUT VOLTAGE
Transmit and Receive Simultaneously 26.0 Vdc ±1.0 Vdc @ 15 Amps (F8 01A)
13.0Vdc ±0.5Vdc @ 3 Amps ( J 801)
Receive only Vdc @ 3 Amps (J801)
INPUT VOLTAGE 121 Vac ±20% (60 Hz versi o n)
230 Vac ±15% (50 Hz versi o n)
INPUT FREQUENCY 60 Hz ± 2 Hz (60 Hz version)
50 Hz ± 2 Hz (50 Hz version)
NOTE: For every + 1.0% change in the input frequency , the o utput voltag e will n ot va ry
more than + 1.6% from the output voltage measured at the nominal input line frequency.
INPUT LINE SU RGE PROTECTION 150 V rated MOV (60 Hz vers ion)
275 V rated MOV (50 Hz vers ion)
DUTY CYCLE
For 0-18 Amp o utp ut 100% (Continuous Duty)
OUTPUT VOLTAGE RIPPLE < mV p-p @ 25°C
< mV p-p @ -30°C
OUTPUT TRANSIENT RESPONSE
Overshoot Not to exceed 30 Volts (F801A)
Undershoot Not less than 22 Volts (F801A)
EFFICIENCY 70% @ rated TX/RX load current and nominal line voltage
FUSE CAPABILITY
Input 10 Amp (60 Hz vers io n)
(2) 5 Amp (50 Hz version)
Output 5 Amp (Low Curren t Por t)
20 Amp (High Curre nt P ort)
DIMENSIONS (H x W x D ) 5.25" x 19" x 10.35"
WEIGHT 45 lbs.
OPERATING ENVIRONMENT -30°C To + 60°C
* These specifications are intended primarily for the use of the service per sonne l.
4
LBI-38551C
DESCRIPTION
The MASTR® II Site Equipment 12/24 Volt Power
Supply provides up to 429 watts to power a MASTR II 800
or 900 MHz site equipment receiver, system circuitry, and
transmitter. The nominal 12 volt output is actually 13.0 Vdc
and provides a maximum of 3 amperes to power the receiver and system circuitry. The nominal 24 volt output is
actually 26.0 Vdc and provides a maximum of 15 amperes
to power the transmitter power amplifier.
The 60 Hz Model (19A149979P1) operates from a
nominal 121 Vac, 60 Hz source. If a 208/220/240Vac, 60 Hz
source is used, an external step-down transforme r (sim ilar to
19C307148P1) must be used with the ’979P1 supply. The
50 Hz model (19A149979P2) provides the same output as
the ’979P 1 supply , but operates from a nomina l 23 0 Vac, 50
Hz source. The output vo ltag e will change a maximum of +
1.6% for each + 1.0% change in the input line frequency.
NOTE
A ferroresonant power supply is designed to work
specifically at a given frequency. The 60 Hz and 50
Hz supplies should be used at their nominal frequency ± 2 Hz.
The power supply’s step-down ferroresonant transformer provides excellent line voltage regulation. For the
rated input line voltage range ( ±20% for P1, ± 15% for P2),
the output vo ltage will not vary more than 2 %. A ferroresonant power supply provides inherently excelle nt l ine volt age
surge protection, and fewer parts for h igh reliability. No active se micond uctor de vices are use d which could re duce reliability.
The output voltages will vary depending on the load currents that the supply is being asked to source. As the load
current rises, the output voltage will drop. Typical output
voltages for various load currents are as follows:
The operation and servicing of the power supply are
completely accessible from the front. The ON/OFF switch
and all fuses are located on the front panel. The low profile
slot type fuse holders contai n t h e p ri m ar y fuse(s) F1 ( F 1 a nd
F4 for P2), the high current output fuse F2, and the low current output fuse F3. The primary fuse(s) protect the input
wiring to the ferroresonant transformer (one 10 amp fus e for
P1, two 5 amp fuses for P2). The output fuses F2 (20 amps)
and F3 (5 amps) prov i de ext e rnal overload prot ection.
The 60 Hz supply provides a courtesy dual AC receptacle. Th e primary line current fuse ( F1) also provides ov ercurrent protection for the dual receptacle. The 60 Hz supply
draws 5 amps under nominal conditions and 7 amps under
all conditions. Thus, the dual courtesy receptacles are rated
for 3 amps.
CIRCUIT ANALYSIS
In the 60 Hz power supply (’979P 1), the ON/OFF
switch (S1) provides line voltage to the power supply
through the primary line fuse F1. Line current fl ows throu gh
F1 to the courtesy receptacle prior to S1. This allows line
voltage to always be available at the receptacles. Current
then flows through the primary of stepdown transformer
(T1) via the 200°C thermal fuse. The thermal fuse would
only open in the unlikely event that an internal short would
develop in the transformer. The varistor (VR1- 150 V rating) provides addition input line voltage suppression.
In the 50 Hz power supply (’979P2), the ON/OFF
switch (S1) is a DPST type switching both primary AC
lines. In addition, both input lines have 5 amp fuses (F1 and
F4). The varistor (VR1-275 V rating) provides a ddition al input line voltage suppression. When power is applied, current flows through the primary of step-down transformer
(T1) via the 200°C thermal fuse. As in the 60 Hz model, the
thermal fuse would only open if the transformer devel ops an
internal short.
The step-down transformer (T1) is a ferroresonant type
which has inherently good input line voltage regulation.
This eliminates the need for additional high current regula-
LOAD CURRENT CONDITIONS 12 V OUTPUT 24 V OUTPUT
TX AND RX SIMULTANEOUSLY (15 + 3 AMPS) ~13.0 VDC ~26.0 VDC
RX ONLY (0 + 3 AMPS) <15.8 VDC <29.0 VDC
NO LOAD (0 + 0 AMPS) <16.3 VDC <30.0 VDC
5
LBI-38551C
Figure 1 - 60 Hz Power Supply (19A149979P1, Rev. A)
Figure 2 - 50 Hz Power Supply (19A149979P2, Rev. A)
6
LBI-38551C
tors. C9 serves as a resonating capacitor across the secondary taps of the transformer.
The transformer steps the input voltage down to approximately 28 Vac across two secondary windings. Each
winding drives two separate full wave bridge rectifiers consisting of D1A, B through D4A, B. The rectifiers are dual
diode packages and are mounted on heat sink HS 1. During
the first half of the period diodes D1B, D2A, D3B, and D4 A
are conducting and delivering current which is summed at
the input to the high current filter. During the second half of
the period diodes D1A, D2B, D3A, and D4 B are conduct ing
and also deliver ing current which is summed at the input to
the high curren t filter. The high current filter consists of C1C4, C7, L1, and R1. It is designed to reduce the output ripple to less than 100 mV p-p for any current load up to 15
amps. It also keeps transient responses greater than 22 volts
and less than 30 volts. Resistor R1 is a 30 ohm, 50 watt resistor that serves two functions. One, it acts as a bleeder resistor to discharge the capacitors when the supply is turned
off. Two, it provides a minimum current load to prevent the
output voltage from ever rising above 30 volts under any
load condition. The high current filte r s o ur ces up to 15 amps
through the 20 amp fuse F2 to the high current output port
F801A on the rear wall of the chassis. F801A-1 and F801A2 are A + and A-, respectively, and connect to the transmitter
power amplifier.
The two secondary windings are also center tapped to
produc e a step-down voltage of around 14 Vac which is also
fed to the two full wave bridge rectifiers. During the first
half of the period, diodes D2A and D4A provide a conduction path for current going to both the high current filter and
the low current filter. During the second half of the period,
diodes D1A and D3A provide the conduction path for current going to the high current filter and the low current filter. The low current filter consists of C5, C6, L2, and R2. It
is designed to reduce the output ripple to less than 100 mV
p-p for any current load up to 3 amps. It also keeps transient
responses greater than 11 volts and les s than 18 volts. Re si s tor R2 is a 100 ohm, 10 watt resistor that serves two functions. One, it acts as a bleeder resistor to discharge the
capacitors when t he supply is turned off. Two, it provides a
minimum current load to prevent the output voltage from
ever rising above 18 volts under any load condition. The
low current filter sources up to 3 amps through the 5 amp
fuse F3 to the low current output port J801 on the rear wall
of the chassis. J 801-1, 2, 3 and J 801-4,5,6 are A+ and A-,
respectively, and connect to the receiver and system circuitry.
neously). When receiving only (a 3 amp load out of J801)
the output voltage is less than 15.8 Vdc at J801 and less
than 29.0 VDC at F801A.
MAINTENANCE
For disassembly, remove 8 screws and lift off top cover.
Disassembly is required before working on the power supply. When replacing any component be certain to use an
identical component. Thermal joint compound is required
between diodes D1, D2, D3, and D4 and the heat si n k.
WARNING
To avoid electrical shock, disconnect power supply
from the AC input power source before removing or
replacing any co mp on ent or assembly.
TROUBLE-SHOOTING
The troubl e-shooting procedur e in Table 1 may be helpful in isolati ng a defective component or assembly in a malfunctioning power supply. When a component or assembly
is identified as defective, replace the defective component
with an identical component. Be sure to check associated
circuitry for any other damaged components before applying power to the unit.
ADJUSTMENTS
This power supply has no adjustments or controls other
than the ON/OFF switch.
INSTALLATION
The power supply is normally installed in an EIA 19
inch wide rack of a MII site equipment cabinet. It can also
be installed in a 19 inch wide stand alone ope n ra ck .
NOTE
Insure that ventilation holes in the unit are not obstructed when the unit is mounted or in operation.
The power supply is rated for a nominal 26.0 Vdc for a
15 amp load out of F801A and for a nominal 13.0 Vdc for a
3 amp load out of J801 (receiving and transmitting simulta-
7
LBI-38551C
Figure 3 - 60 Hz Power Supply (19A149979P1, Rev. A)
Figure 4 - 50 Hz Power Supply (19A149979P2, Rev. A)
8
LBI-38551C
FUSE REPLACEMENT
To replace a defective fuse, perform the following procedure:
1. Place ON/OFF switch to the OFF position.
2. For fuses F1 (F1 & F4 on ’979P2), F2, or F3; remove cap from fuse holder and replace fuse with a
fuse of the same type and rating.
WARNING
To avoid possible electric shock, DO NOT operate
this power supply with the fuse cover removed.
WARNING
No one should be permitted to handle any portion of
the equipment that is supplied with high voltage, or
to connect any exte rnal apparatus to the units while
the units are supplied with power. KEEP AWAY
FROM LIVE CIRCUITS.
9
LBI-38551C
TROUBLESHOOTING PROCEDURES
Table 1 - 60 Hz Power Supply 19A149979P1
SYMPTOM PROCEDURE
No output voltage at J801 Check the following:
1. Open F1, F3 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
No output voltage at F801A Check the following:
1. Open F1, F2 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
Low output voltage on F801A.
0 < Vo < 25.0 Vdc
Low output voltage on J801.
0 < Vo < 12.5 Vdc
High output voltage on F801A
(>30.0 Vdc) or J801 (>16.3 Vdc).
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
NOTE
2. Line frequency < 60 Hz
3. Load current greater than 15.0 amps
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
2. Line frequency < 60 Hz.
3. Load current greater than 3.0 amps
Check the following:
1. R1 not connected between pos . 1 an d 2 on F801A
2. R2 not connected between pos . 1 an d 4 on J801
3. Line frequency >60 Hz
: All four diode packages contain two diodes each
NOTE
: All four diode packages contain two diodes each
10
TROUBLESHOOTING PROCEDURES
Table 2 - 50 Hz Power Supply 19A149979P2
SYMPTOM PROCEDURE
No output voltage at J801 Check the following:
1. Open F1, F3, F4 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
No output voltage at F801A Check the following:
1. Open F1, F2, F4 or S1
2. AC voltage on W801
3. Open D1, D2, D3, or D4
LBI-38551C
Low output voltage on F801A.
0 < Vo < 25.0 Vdc
Low output voltage on J801.
0 < Vo < 12.5 Vdc
High output voltage on F801A
(>30.0 Vdc) or J801 (>16.3 Vdc).
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
NOTE
2. Line frequency < 50 Hz
3. Load current greater than 15.0 amps
Check the following:
1. If one of the dual diodes on D1, D2, D3, or D4 is shorted
2. Line frequency < 50 Hz
3. Load current greater than 3.0 amps
Check the following:
1. R1 not connected between pos . 1 an d 2 on F801A
2. R2 not connected between pos . 1 an d 4 on J801
3. Line frequency >50 Hz
: All four diode packages contain two diodes each
NOTE
: All four diode packages contain two diodes each
11
LBI-38551C
COMPONENT SIDE
•
OUTLINE DIAGRAM
SOLDER SIDE
•
(33017704, Sh. 1)
(33017700, Sh. 1)
PRINTED CIRCUIT BOARD
50 Hz AND 60 Hz MODELS
12
(33017704, Sh. 1)
(33017700, Sh. 2)
ASSEMBLY DIAGRAM
LBI-38551C
60 Hz POWER SUPPLY
19A149979P1, Rev. A
13
LBI-38551C
SCHEMATIC DIAGRAM
60 Hz POWER SUPPLY
19A149979, Rev A
(289PS3, Sh. 1, Rev. C)
14
12/24 VOLT POWER SUPPLY
19A149979P1
ISSUE 1
PARTS LIST
LBI-38551C
SYMBOL PART NO. DESCRIPTION
.........................CAPACITORS..........................
C9 M29/17032400 Polypropylene: 8 uF, 660Vac, similar to Ronken
F1 M29/09013901 Non-time delay Glass/Ferrule Fuse: 10 amps,
F2 M29/09013903 Normal Blow Fus e: 20 amps, 32V; similar to
F3 M29/09016300 Slow Blow Fuse: 5 amps, 250V; similar to
M29/09014200 Fuse Holder, screwdriver slot design: similar to
F801A M29/4002860 0 Co nn ect or : 4 po sitio n; sim to AMP 64 16 85 -2 .
J801 M29/40027400 Connector: 9 position; sim to Molex 03-09-1091.
R1 M29/16012302 Wirewound Resistor: 30 ohms, 50 w; similar to
RE1
and
RE2
S1 M29/20003300 SPST: 16 amps, 125V switch; similar to Carling
T1 M29/289CV3 Ferro-Resonant Transformer.
W1
thru
W30
W801 M29/11022301 Power Cord.
M29/40027800 Receptacle: power, 3 wire grounding, 15 amps
M29/289LW3 Wiring Harness.
M29/07062200 Top Cover.
M29/07063000 Front Panel.
M29/22043800 Machine screw, TORX head: 3.5m x 1/2;
M29/22044600 Machine screw, hex head; No. 8-32 x 5/8"
M29/22041502 Hex nut: No. 8-32, quantity 4; secures C9, R1,
M29/05065600 Bracket for C9.
M29/22041501 Hex nut: No. 6-32 x .250, quantity 10; used to
M29/22043201 Nylon Standoff: Quantity 7; Used to separate
M29/11022000 Strain relief, black similar to Heyco 1200.
M29/22041504 Nu t: 1/4- 20 x 7/16 , qu an tity 4; secures T1 to
M29/22041503 Nut: No. 10-32, quantity 4; used to secure
M29/22010305 Washer: #6, used to secure RE1/RE2.
M29/22044500 Nut, 3.5M: used to secure RE1/RE2.
P61A24805H05.
.............................. FUSES ...............................
250V; similar to Bussman AGC-10.
Bussman AGC-20.
Bussman MDL-5.
..............FUSE HOLDER & BLOCKS...............
Bussman "HTB-96I". (Used with F1 thru F3).
.........................CONNECTOR..........................
..........................RESISTORS ...........................
IRC PW-50E-30OHMS-5% (with bracket).
....................... RECEPTACLES........................
at 125V.
...........................SWITCHES............................
RA911VBBOV.
...................... TRANSFORMER .......................
...................... WIRE HAR NESS .......................
..................... MISCELLANEOUS ......................
Quantity 8; similar to Camcar/ Te xtr on Inc.
Secures cover.
secures C9 to case.
and ground wire to case.
secure PCB,.
PCB from case.
To secure W801 to case.
case
terminal lugs to PCB.
SYMBOL PART NO. DESCRIPTION
HEAT SINK / PCB ASSEM BLY
M29/91034501 (REV. 0)
(Assembly includes the following:)
.........................CAPACITORS...........................
C1
thru
C4
C5 M29/17034300 Aluminum electrolytic: 3300 0 uF, 25V; sim to
C6 M29/17031500 Aluminum electrolytic: 2700 0 uF, 25V; sim to
C7 M29/17034301 Aluminum electrolyti c: 2700 0 uF, 40V. (Rev. B
L1 M29/289C5 Output Choke: .7mH, 15 amps.
L2 M29/289FC4 Output Choke: .4mH, 3 amps.
D1
thru
D4
R2 M29/11 60 13 800 Resistor: 100 ohm 10 % , 10 wa tt .
MOV1 M29/18008013 Varistor: 150 V, 80j me ta l oxide .
TB1
thru
TB11
M29/17034301 Aluminum electro lyti c: 2700 0 uF, 40V.
UCC KME25VB333M35X50LL.
UCC KME25VB273M35X50LL.
& later).
.............................CHOKES...............................
..........................RECTIFIERS ...........................
M29/18030500 Dual Schottky Rectif ier : 30 am ps, 150 V;
M29/13048100 FAST O N ta bs; si milar to Amp 62650 -1 .
M29/22045500 Pem stud: #10-32. Qua nt ity 4, secures PCB.
M29/22041503 Keeper Nut: #10-32 , 1/8 " th ick. Q ua nt ity 4,
M29/22046700 Rivet: Quantity 2, secures L1.
M29/22025001 Flat washer: #10. Quantity 2, secures L1.
M29/11024400 Heatsink.
M29/31016703 Heat Transf er Pad: To insure good thermal
M29/22027710 Hex head screw: No. 4-40 x .5; quantity 4,
similar to GI FED30CP.
..........................RESISTORS............................
........................... VARISTOR.............................
..........................TERMINALS............................
..................... MISCELLANEOUS.......................
secures PCB.
conductivity between D1-D4 and heat sink.
used to secure D1-D4 to heat s ink.
*COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES.
15
LBI-38551C
ASSEMBLY DIAGRAM
50 Hz POWER SUPPLY
19A149979P2, Rev . A
16
SCHEMATIC DIAGRAM
LBI-38551C
50 Hz POWER SUPPLY
19A149979P2, Rev . A
(289PS4 Sh. 1, Rev. C)
17
LBI-38551C
12/24 VOLT POWER SUPPLY
19A149979P2
ISSUE 1
SYMBOL PART NO. DESCRIPTION
.........................CAPACITORS..........................
C9 M29/17032400 Polypropylene: 8 uF, 660Vac, similar to
F1 M29/09016000 Normal Blow Fuse: 5 amps, 250V; similar to
F2 M29/09013903 Normal Blow Fuse: 20 amps, 32V; similar to
F3
and
F4
F801A M29/40028600 Connector: 4 position; sim to AMP 641685-2.
J801 M29/40027400 Connector: 9 position; sim to Molex
R1 M29/16012302 Wirewound Resistor: 30 ohms, 50 w; similar to
S1 M29/20003900 DPST.
T1 M29/ 28 9CV 4 Ferro-Resonant Transformer.
W1
thru
W30
W801 M29/110238 00 Power Cord.
*COMPONENTS ADDED, DELETED OR CHANGED BY PRODUCTION CHANGES.
M29/09016000 Normal Blow Fuse: 5 amps, 250V; similar to
M29/09016100 Fuse Holder, screwdriver slot de sign: similar to
M29/09014200 Fuse Holder, screwdriver slot de si gn : simil a r to
M29/289LW4 Wiring Harness.
M29/07062200 Top Cover .
M29/07063700 Front Panel .
M29/22043800 Machine screw, TORX hea d: 3.5M x 1/ 2;
M29/22044600 Machine screw, hex head; No. 8- 32 x 5/8"
M29/22041502 Hex nut: No. 8-32, quantity 4; secures C9, R1,
M29/05065600 Bracket for C9
M29/22041501 Hex nut: No. 6-32 x .250, quantity 10; used to
M29/22043201 Nylon Standoff: Quantity 7; Used to separate
M29/1 1 02 39 00 Strain relief, black similar to Heyco 37 72 . To
M29/22041504 Nut: 1/4-20 x 7/16, quantity 4; secures T1 to
M29/22041503 Nut: No. 10-32, qua nt ity 4; used to secur e
Ronken P61A24805H05.
..............................FUSES................................
Bussmann GDA-5.
Bussman AGC-20
Bussman GDA-5.
............ ..FUSE HOL DER & BLO CKS............ .. .
Bussman "HTB-96M". (Used with F1, F3 , an d
F4).
Bussman "HTB-96I". (Used with F2).
.........................CONNECTOR..........................
03-09-1091.
..........................RESISTORS...........................
IRC PW-50E-30OHMS-5% (with bracket).
...........................SWITCHES............................
......................TRANSFORMER .......................
......................WIRE HARNESS .......................
.....................MISCELLANEOUS......................
Quantity 8; Secures cover.
secures C9 to case.
and ground wire to case.
secure PCB,.
PCB from case.
secure W801 to case.
case
terminal lugs to PCB.
PARTS LIST
SYMBOL PART NO. DESCRIPTION
C1
thru
C4
C5
and
C6
C7 M29/17034301 Aluminum electrolyti c: 2700 0 uF, 40V.
L1 M29/289C5 Output Cho ke: .7mH, 15 amps.
L2 M29/289FC4 Output Choke: .4mH, 3 amps.
D1
thru
D4
R2 M29/1 1 60 13800 Resistor: 100 ohm 10% , 10 wa tt .
MOV1 M29/18008011 Va rist or : 27 5V, 55j met al oxid e
TB1
thru
TB11
HEAT SINK / PCB ASSEM BLY
M29/1 102 43 00 (RE V. A)
(Assembly includes the following:)
.........................CAPACITORS ..........................
M29/17034301 Aluminum electrolyti c: 2700 0 uF, 40V.
M29/17034300 Aluminum electrolytic : 3300 0 uF, 25V; sim to
M29/18030500 Dual Schottky Rectifier : 30 am ps, 150 V;
M29/13048100 FASTO N tabs; similar to Am p 6 26 50-1.
M29/22045500 Pem Stud: #10-32. Qua nt ity 4, secur es P CB .
M29/22041503 Keeper Nut: # 10-32, 1/8" thick. Quantity 4,
M29/22046700 Rivet: Quantity 2, secures L1.
M29/22025001 Flat washer: #10. Quantity 2, secures L1.
M29/11024400 Heatsink.
M29/31016703 Heat Transfer Pad: T o i n sur e g oo d t he rm al
M29/22027710 Hex head screw: No. 4-40 x .5, quan tit y 4,
UCC KME25VB333M35X50LL.
.............................CHOKES ..............................
..........................RECTIFIERS...........................
similar to GI FED30CP.
.......................... RESISTORS............................
............................VARISTOR.............................
.......................... TERMINALS............................
..................... MISCELLANEOUS.......................
secures PCB.
conductivity between D1-D4 and heat sink.
used to secure D1-D4 to heat s ink.
M/A-COM Wireless Systems
3315 Old Forest Road
Lynchburg, Virginia 24501
(Outside USA, 434-385-2400) Toll Free 800-528-7711
macom-wireless.com Printed in U.S.A.
www.
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