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Ericsson 19A705860P1, Maintenance Manual

The Ericsson 19A705860P1 Maintenance Manual is a comprehensive guide for maintaining and servicing your Ericsson product. You can easily download this manual for free from manualshive.com, providing you with all the necessary instructions and information to keep your product in top condition. Don't miss out on this essential manual!

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OUTLINE DIAGRAM

IC DATA

BACK SIDE

KEYPAD SIDE

(BP0303645D, Sheet 5)
(BP0303645D, Sheet 1)

(BP0303645, Sheet 6)
(BP0303645, Sheet 2)

OPERATIONAL AMPLIFIER U1
A29/UL0303551A0145 (MC4558)

AUDIO POWER AMPLIFIER U2
A29/UL0303548A0149 (LM386)

VOLTAGE REGULATOR U3
A29/UL3031586A0149 (LM317)

MICROCOMPUTER U5
A29/UL0303551A0145 (MB88543)

HEX INVERTERS U4
A29/UC0303549A0145 (74HC04)

LBI-38412

3

Summary of Contents for 19A705860P1

Page 1: ...FICATIONS POWER SUPPLY Nominal 12 5 Vdc Range 10 to 16 Vdc No failure or lack of function within this range CURRENT DRAIN CU Power On Hook No Audio Less than 25 mA Rated Audio 100 mA OPERATING TEMPERA...

Page 2: ...uces an output of 150 mV rms 5 dB dB SPL 20 LOG 10 P Po P is the rms sound pressure in Pascals and Po 2 X 10 5 Pascal 2 Distortion For an input signal of less than 1 distortion the output distortion d...

Page 3: ...BACKLITE After 1 6 seconds LITE ON After 1 6 seconds LITE OFF 5 Call Timer Running 000 00 0 Any key except END will stop the CALL TIMER and go to the keypad test 6 Keypad Test Audio can be tested here...

Page 4: ...BP0303645 Sheet 6 BP0303645 Sheet 2 OPERATIONAL AMPLIFIER U1 A29 UL0303551A0145 MC4558 AUDIO POWER AMPLIFIER U2 A29 UL0303548A0149 LM386 VOLTAGE REGULATOR U3 A29 UL3031586A0149 LM317 MICROCOMPUTER U5...

Page 5: ...SCHEMATIC DIAGRAM DX0303651 Sh 1 Rev B LBI 38412 4...

Page 6: ...PARTS LIST LBI 38412 5...

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