Akai AT K11 L AT K22 L Service Manual

Page 1

AT-Kl 1 / L

AT-K22/L
.. 6.
AM-Ull
I
. AM-U22
FM AM STEREO TUNER
AT-I{ 1 1 / L
MODEL AT-K2 2 / L
STEREO INTEGRATED ANIPLIFIER
AM -U 1 1
MODELAM-U22
THIS "I \\l'.r\L IS ;\I)PLI(.»\BLE r) BUT SILVER AND BLACK PANEL MODELS
SECTION 1 MODEL AT~K1 UL and AT-KZZ/L SERVICE MANUAL ........... 3
SECTION 2 MODEL AM-Ul 1 and AM-UZZ SERVICE MANUAL .............. 27
SECTION 3 PARTS LIST .................... - ........................ 47

SECTION 4 SCHEMATIC DIAGRAM ................................... 73

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DO

SECTION 1

SERVICE MANUAL

MODEL AT-K1 1/L, AT-K22/L

TABLE OF CONTENTS

I. TECHNICAL DATA ........................................................ 4
1. MODEL AT-Kl I/L ........................... L ........................... 4
2 MODEL AT-K22/L ....................................................... 5
II. DISMANTLING 0F UNIT .................................................... 6
1. MODEL AT-Kl 1/L ....................................................... 6
2. MODEL AT-K22/L ....................................................... 7
III. CONTROLS ............................................................. 8
1. MODEL AT 2. MODEL AT-K22/L ....................................................... 9
IV. PRINCIPAL PARTS LOCATION ............................................... 10
1. MODEL AT-Kl l/L ....................................................... 10
2. MODEL AT-K22/ L ....................................................... 11
V. VOLTAGE CONVERSION ....................................... ' ............ 12
VI. TUNER ADJUSTMENTS ..................................................... 13
1. FM SECTION ADJUSTMENTS
2. AM(AT-K11 L and AT-K22 LIMW) SECTION ADJUSTMENTS ......................... 18
3. LW SECTION ADJUSTMENTS .............................................. 19
VII. TUNING CORD THREADING ................................................. 20
1. MODEL AT-Kl l/L ....................................................... 20
2. MODEL AT-K22/L ....................................................... 20
VIII. CLASSIFICATION OF VARIOUS P.C BOARDS ..................................... 21
II P.C. BOARD TITLES AND IDENTIFICATION NUMBERS ............................ 21
2. COMPOSITION OF VARIOUS P.C BOARDS ..................................... 22
For basic adjustments, measuring methods, and operating principles, refer to GENERAL TECHNlCAL
MANUAL.

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O

2. MODEL AM-U22

In case of trouble, etc. necessitating dismantling, please
dismantle in the order shown in the photographs.
Reassemble in reverse order.

KNOBS

u
scflzws

scn EWS

SCREWS

\L

UPPER COVER

SCREWS

FRONT PANEL

31

Page 32

2. MODEL AM-U22

Wm: u mmr
lullmxumrlxm mu

Fig. 2 Controls (AM-U22)

1. LED BAR METER 12. POWER SWITCH

2. STEREO BALANCE CONTROL 13. GROUND TERMINAL

3. VOLUME CONTROL l4. PHONO JACKS

4. INPUT SELECTOR AND INDICATORS 15. TUNER JACKS

5. TAPE MONITOR SWITCHES 16. AUX JACKS

6. MODE SWITCH 17. TAPE 1 SYSTEM REC/PLAY JACKS

7. LOUDNESS SWITCH 18 TAPE 2 SYSTEM REC/PLAY JACKS

B. METER SWITCH 19. SPEAKER TERMINALS

9, THEBLE CONTROL 20 AC OUTLETS IU/T, AAL, CSA ONLYI
10. BASS CONTROL 21, AC CORD (CEE, UK, SAA: AC INLET)
11. HEADPHONE JACK (PHONES)

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Page 43

Resistor and Capacitor which is not listed in this pans list, please refei to
COMMON LIST FOR SERVICE PARTS.

47