Ericsson GE MASTR II 19A149979P1 Maintenance Manual Download Page 4

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.

4.

Care should be taken so objects do not fall or liq-
uids do not spill into the product.

5.

DO NOT expose product to extreme temperatures.

6.

DO NOT use auxiliary equipment not recom-
mended or sold by the manufacturer. To do so may
result in a risk 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 abso-
lutely necessary. Use of an improper extension
cord could result in a risk of fire and electric
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.

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 them immediately.

11.

DO NOT operate this product in an explosive at-
mosphere unless it has been specifically certified
for such operation.

12.

To reduce risk of electric shock, unplug unit from
outlet before attempting any maintenance or clean-
ing.

13.

DO NOT operate this product with covers or pan-
els 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. Fail-
ure to do so can result in fire hazard.

15.

GROUNDING AND AC POWER CORD CON-
NECTION - To reduce risk of electrical shock use
only a properly grounded outlet. The unit is
equipped with an electric cord having an equip-
ment - 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 electri-
cian. Improper connection or loss of ground con-
nection 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.

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.

NOTE

LBI-38551

4

Summary of Contents for MASTR II 19A149979P1

Page 1: ...O NOT USE THIS PO LARIZED PLUG WITH AN EXTENSION CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE THESE SERVICING INSTRUCTIONS ARE FOR USE BY QUALI FIE...

Page 2: ...ONS 3 IMPORTANT SAFETY INFORMATION 4 DESCRIPTION 6 CIRCUIT ANALYSIS 6 MAINTENANCE 7 OUTLINE DIAGRAM 12 ASSEMLBY DIAGRAMS 60 Hz Power Supply 13 50 Hz Power Supply 16 SCHEMATIC DIAGRAMS 60 Hz Power Supp...

Page 3: ...PUT LINE SURGE PROTECTION 150 V rated MOV 60 Hz version 275 V rated MOV 50 Hz version DUTY CYCLE For 0 18 Amp output 100 Continuous Duty OUTPUT VOLTAGE RIPPLE mV p p 25 C mV p p 30 C OUTPUT TRANSIENT...

Page 4: ...his product in an explosive at mosphere unless it has been specifically certified for such operation 12 To reduce risk of electric shock unplug unit from outlet before attempting any maintenance or cl...

Page 5: ...Figure 1 60 Hz Power Supply 19A149979P1 Rev A Figure 2 50 Hz Power Supply 19A149979P2 Rev A LBI 38551 5...

Page 6: ...e s protect the input wiring to the ferroresonant transformer one 10 amp fuse for P1 two 5 amp fuses for P2 The output fuses F2 20 amps and F3 5 amps provide external overload protection The 60 Hz sup...

Page 7: ...uce 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 less than 18 volts Resis tor R2 is a 100 ohm 10 watt resisto...

Page 8: ...Figure 3 60 Hz Power Supply 19A149979P1 Rev A Figure 4 50 Hz Power Supply 19A149979P2 Rev A LBI 38551 8...

Page 9: ...eplace fuse with a fuse of the same type and rating 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 porti...

Page 10: ...All four diode packages contain two diodes each 2 Line frequency 60 Hz 3 Load current greater than 15 0 amps Low output voltage on J801 0 Vo 12 5 Vdc Check the following 1 If one of the dual diodes o...

Page 11: ...horted NOTE All four diode packages contain two diodes each 2 Line frequency 50 Hz 3 Load current greater than 15 0 amps Low output voltage on J801 0 Vo 12 5 Vdc Check the following 1 If one of the du...

Page 12: ...PRINTED CIRCUIT BOARD 50 Hz AND 60 Hz MODELS OUTLINE DIAGRAM 33017704 Sh 1 33017700 Sh 1 COMPONENT SIDE 33017704 Sh 1 33017700 Sh 2 SOLDER SIDE LBI 38551 12...

Page 13: ...60 Hz POWER SUPPLY 19A149979P1 Rev A ASSEMBLY DIAGRAM LBI 38551 13...

Page 14: ...60 Hz POWER SUPPLY 19A149979 Rev A 289PS3 Sh 1 Rev C SCHEMATIC DIAGRAM LBI 38551 14...

Page 15: ...PARTS LIST LBI 38551 15...

Page 16: ...50 Hz POWER SUPPLY 19A149979P2 Rev A ASSEMBLY DIAGRAM LBI 38551 16...

Page 17: ...50 Hz POWER SUPPLY 19A149979P2 Rev A 289PS4 Sh 1 Rev C SCHEMATIC DIAGRAM LBI 38551 17...

Page 18: ...PARTS LIST LBI 38551 18...

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