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cord installation.
Cement dial cord ends.

4.

SERVICE SUPPLEMENT

THIS SUPPLEMENT CONTAINS UPDATED OR ADDITIONAL REPLACEMENT PARTS and SERVICE INFORMATION.

PARTS LIST REVISIONS TO DATE

CORRECT
CAT. NO.

REF. NO. DESCRIPTION REVISION

EA82X50

MS-2

Whip Antenna

Was EA2X50

EA49X520 R17

Trim Pot

Was RT2410

EA36X509 L2

FM RF Coil

Was RT4722

EA39X254 SW3

Power ON/OFF
Switch

Was EA39X196

EA36X71

L8

RF Choke

Add to Parts List

CORRECTIONS TO SCHEMATIC

C48 is shown as 47MF On the schematic diagram- Please change to 0.1MF as shown in the Parts List

SERVICE INFORMATION

This service manual contains the unique replacement parts list and partial schematic for the model 7-2880B AM/FM Portable Radio. The

remaining parts, as well as the schematic, wiring diagram, alignment instructions, are the same as those used in the Model 7-288OA. When

servicing this model, also refer to service manual 7-2880A, Pub. #37-6000-79.

UNIQUE REPLACEMENT PARTS LIST

CAT. NO.

SYMBOL DESCRIPTION

EA98X728 CA-1

Cabinet Back w/External
Antenna Terminals

EA3X264

MS-1

External Antenna Terminal

EA83X135 L6

AM Antenna

EA13X218 R38

2.2 Megohm Resistor/Special
High Voltage Type

NOTE: CA and MS References are for factory use only

Replacement parts may be ordered from: General Electric Company, 1900 Bleecker St., Utica, N.Y. I3501

GE Superadio (1) Manual

http://earmark.net/gesr/sr1_manual.htm

6 of 6

7/26/2014 3:34 PM

Содержание Superadio

Страница 1: ...R OUTPUT 10 DISTORTION 700 mW RMS Minimum SPEAKER IMPEDANCE 8 Ohm SENSITIVITY AM Better than 150 uV M for 20 dB quieting FM Better than 25 uV IHFM Sensitivity SELECTIVITY AM 65 dB Minimu for 2 ACA Selectivity FM 50 dB Minimum for 2 ACA Selectivity MINIMUM VOLUME HUM 5 mV or Less CURRENT DRAIN IDLE CURRENT AM FM 20 mA Maximum 26 mA Maximum ALIGNMENT PROCEDURE AM ALIGNMENT FUNCTION SWITCH IN AM POSI...

Страница 2: ...etter than 5 CABINET DISASSEMBLY Remove seven 7 cabinet back screws including one 1 located in battery compartment 1 Remove Tuning Treble Bass and Loudness knobs 2 Depress ON OFF Power knob to the ON position Separate cabinet front from cabinet back at the bottom of the cabinet then carefully lift cabinet front upwards to exit ON OFF knob Note Failure to depress knob during this step will cause sw...

Страница 3: ...NMENT PADS Click image to see full size version Click image to see full size version Click image to see full size version GE Superadio 1 Manual http earmark net gesr sr1_manual htm 3 of 6 7 26 2014 3 34 PM ...

Страница 4: ...9 4th AM IF EA61X286 T10 AM RF CAT NO SYM DESCRIPTION POTENTIOMETERS RT2410 R17 AFC Bias Trim Pot 50K EA49X501 R24 Treble Control 100K EA49X501 R25 Bass Control 100K EA49X502 R20 Volume Control 50K CAT NO SYM DESCRIPTION TRANSISTORS and INTEGRATED CIRCUITS Note When replacing transistors and integrated circuits with the type specified below corresponding changes must also be made CAT NO SYM COMPON...

Страница 5: ...RFORM THE FOLLOWING SAFETY CHECKS AFTER SERVICING THIS UNIT Remove all externally connected test equipment and wires before safety testing this unit 1 Use RT6440 Safety Test Box or construct circuit as shown 2 Plug power cord at unit to be tested into Test Receptacle 3 Switch unit being tested to ON position 4 Connect VTVM across 1K resistor in test circuit Set meter on high 140V AC scale to avoid...

Страница 6: ...ains the unique replacement parts list and partial schematic for the model 7 2880B AM FM Portable Radio The remaining parts as well as the schematic wiring diagram alignment instructions are the same as those used in the Model 7 288OA When servicing this model also refer to service manual 7 2880A Pub 37 6000 79 UNIQUE REPLACEMENT PARTS LIST CAT NO SYMBOL DESCRIPTION EA98X728 CA 1 Cabinet Back w Ex...

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