Kenwood CS 1554 HU Service Manual
This is the 49 pages manual for Kenwood CS 1554 HU Service Manual.
Read or download the pdf for free. If you want to contribute, please upload pdfs to audioservicemanuals.wetransfer.com.
Extracted text from Kenwood CS 1554 HU Service Manual (Ocr-read)
Page 2
CONTENTS
SPECIFICATIONS ................................................. 3
CONTROLS AND CONNECTORS ON FRONT PANEL ............... » ......... 4
CONTROLS AND CONNECTORS ON REAR PANEL ......................... 5
CIRCUIT DESCRIPTION ........................................... 6 ~ 9
TROUBLE SHOOTING ....................................... . 10 ~ 13
VOLTAGE WAVEFORMS AT INDIVIDUAL POINTS OF CIRCUIT ............. 19 ~ 20
ADJUSTMENT POINTS ON PC BOARD .................................. 2_I
ADJUSTMENT ................................................. 22 ~ 27
PARTS LAYOUT (FRONT VIEW) ...................................... 23
PARTS LAYOUT (REAR VIEW) ..................................... . 29
PARTS LAYOUT (TOP VIEW). . 30
PARTS LAYOUT (SIDE VIEW) ........................................ 31
PARTS LAYOUT (BOTTOM VIEW) ...................................... 32
PC BOARD VERTICAL AMPLIFIER UNIT (X73-0011»00) ...................... 33
PC BOARD HORIZONTAL AMPLIFIER UNIT (X650008~01) ................... 34
PARTS LIST OF 091554 ......................................... 35 ~ 39
PARTS LIST OF xes-oooam ..... . ..
PARTS LIST OF X73-OOI1»00 ...................................... 43 ~ 45
BLOCK DIAGRAM ................................................. 45
SCHEMATIC DIAGRAM ............................................. 46
COLOR CODE ........................................... . ......... 47
Page 17
r"
TROUBLE SHOOTING
© Trigger confirmation.
®*--(EB
Check EXT triggering.
-> Check INT triggering.
M ii
a.
be
S107, 108 have defective ccntacts,
Check waveform at terminal #29 on printed
Defective 06, 7 on printed circuit board X65~000870L circuit board X73-0011-00.
GD
Defective 043, 44 (28A562Y, 250458) located on X73-0011-00.
Defective $107.
l
Check CH1 triggering
Check waveform at terminal #30 on printed
circuit board X73-001 1-00.
(E9
CH1 trigger signal amplifier located on printed circuit board X73-
0011-00.
Defective 033 thru 40, 47 (033 thru 37, 40 and 47 28C458; 033 and
39 28A562Y).
Defective S107.
l7
Page 20
VOLTAGE WAVEFORMS AT INDIVIDUAL POINTS OF CIRCUIT
(3) MILLER INTEGRATOR CIRCUIT .d
* 017 thru 20 (017, 28K30 (0); Que thru 20, 280371R) located on
printed circuit board X65-0008-01.
Collector waveform of 018
l7V---- --~- ---- -
Gate waveform of 017
4.0V ------
3.5V -----' --------
0V- 0V
Emitter waveform of 020
£2
(4) WAVEFORMS OF HOLD-OFF CIRCUIT
" O14 (280371R) located on printed circuit board X65-0008-01.
Base waveform of 014 Emitter waveform of 014
UV ----------- ----~- -
2v ------ --- ---
0V
20