Table Of Contents - Akai AT-S61 Service Manual

SECTION 1
SERVICE MANUAL
MODEL AT-S61/L/J
This manual is applicable to both silver and pearl shadow panel models.
TABLE OF CONTENTS
I.
SPECIFICATIONS ........csscssssesssssecsreessseestensacersceesesessensnsaeasaresnens as 74
If.
DISMANTLING OF UNIT .......cccccccsstecssnecesenseseeseneessecessrnecsssseonees
5
TIT,
CONTROLS .......eccccsscssesesseseeeceeesneescensecesnnessasesecsesnenonsssssseasansnsssees
6
TV.
PRINCIPAL PARTS LOCATION.........ccccscccssrsesstessesserenenseessneorees
7
V.
VOLTAGE CONVERSION .........cccsccecseessteseseessrneeterennesnseneseeseanens
8
VI.
OPERATION ........cccssssessessecstccseseseesesesnnssenscsesesensecnsrsusssvarssnassnanenes
9
1. FM SYNTHESIZER BLOCK DIAGRAM ..........ccccscsesseteeteetees 9
2. FUNCTION OF AT-600 TERMINALS ........ceceeceeseereeteeteenees 10
3. POWER OFF MANAGE AND RESET CIRCUIT ......ceeeeee 12
4. MUTE CIRCUIT OPERATION .........ccccceesseeeseenseetteeeteententeenees 12
5. STEREO NOISE REDUCTION CIRCUIT ......ccecceteeteereetteene 13
6. AUTO STOP SIGNAL DETECTING CIRCUIT... eee 14
7. KEY MATRIX.........0cccccecccsssssssscenesssseosseseessscecsessecesessnnsensneasonse 15
VIL. ELECTRICAL ADJUSTMENT. .........ccccsssecsessceesstesssecesenesonanseeaonne 17
1. AM (AT-S61L: MW) SECTION ADJUSTMENT ........ eee 17
2. LW SECTION ADJUSTMENTS 1.0... cccccecseeereeeeeenteetteeteeeneeerees 18
3. FM SECTION ADJUSTMENT ....... cece cccccececneeeteeeeeneeeneeeennrtens 18
VIII. CLASSIFICATION OF VARIOUS P.C BOARDS ......csceseeseeeeeees 20
1. P.C BOARD TITLES AND IDENTIFICATION NUMBERB...... 20
2. COMPOSITION OF VARIOUS P.C BOARDS ...... eect 21