11AKXX Circuit  Diagrams. PDF service manuals

circuit board diagrams, schematics, PDF service manuals, fault codes

PROBLEM SOLVING GUIDE OF THE 11AK19 MAINBOARD

From the “Problem Solving Guide” menu you select a chassis and see the “Problem Solving Guide” page designed for that chassis. In these pages, you can see some well-known and

mostly faced problems and some hints to detect the source of the problem. If the conditions in the “Descriptions” parts are the situations that you face up with, then beside that

description , you can see the “Defected components” to be replaced for solving the problem.

1

No sound

(mono)

1-Speakers 2-IC100 pin 5: -12.5VDC 3-IC100

pin 7: +12.5VDC 4-IC100 pin 2: +12.5VDC 5-

IC100 pin 9: Sound signal (Scop) 6-IC401 pin

15: Sound signal (Scop) 7-IC401 pin

55:Sound signal (Scop)

Speakers,IC100,IC502,IC401,

Q402


2

No sound

(stereo)

1-Speakers 2-IC100 pin 5: -12.5VDC 3-IC100

pin 7: +12.5VDC 4-IC100 pin 2: +12.5VDC 5-

IC100 pin 9: Sound signal (Scop) 6-IC100 pin

1:Sound signal (Scop) 7-PL404 pin 4: Sound

signal (Scop) 8-PL404 pin 5: Sound signal (Scop)

 

Speakers,Sound

Board,IC100,IC502


3

No sound

(Secam L

mono)

1-IC501 pin 9 :0V 2-IC501 pin 18 :5V 3-IC401

pin 2: Sound signal (Scop) 4-IC402 pin 8:

Sound signal (Scop)

IC402


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Comments: 1
  • #1

    Tamas Laszlo (Tuesday, 10 January 2023 03:23)

    Koszonom