Ericsson GE MASTR II 19A149979P1 Скачать руководство пользователя страница 9

FUSE REPLACEMENT

To replace a defective fuse, perform the following pro-

cedure:

1.

Place ON/OFF switch to the OFF position.

2.

For fuses F1 (F1 & F4 on ’979P2), F2, or F3; re-
move cap from fuse holder and replace 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 portion of
the equipment that is supplied with high voltage, or
to connect any external apparatus to the units while
the units are supplied with power. KEEP AWAY
FROM LIVE CIRCUITS.

WARNING

LBI-38551

9

Содержание MASTR II 19A149979P1

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 15: ...PARTS LIST LBI 38551 15...

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

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

Страница 18: ...PARTS LIST LBI 38551 18...

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