Akai DT 100 DT 200 Service Manual
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Extracted text from Akai DT 100 DT 200 Service Manual (Ocr-read)
Page 2
DT-100
DT-200
AUDIO-TIMER
DT -100
MODEL DT-ZOO
TABLE OF CONTENTS
SECTION I SERVICE MANUAL ............ 3
SECTION 2 PARTS LIST .................. . 19
SECTION 3 SCHEMATIC DIAGRAM ......... .. 28
Page 7
2. MODEL DT-200
FD
.mflggi-WNT
mum mun
POWER MODE SELECTOR
FUNCTION SELECTOR KEYS
PROGRAM MEMORY SELECTOR KEYS (1 to 4)
DAY SET KEY
DIMMEH SENSOR (Auko)
DIGITAL FL DISPLAY
AC OUTLET 1ND|CATOR
ONE HOUR PLAY INDICATOR
AM/PM PROGRAMING KEYS (No! on some modeis)
PROGRAMING KEYS
, AM/PM INDICATORS (Not on some models)
. ONE HOUR PLAY KEY
C LEAR KEY
T TURN OFF KEY
TURN ON KEY
UNSWITCHED AC OUTLET (Not on some medals)
. SWITCHED AC OUTLETS
T VOLTAGE SELECTOR (No: on some models)
19.
20.
21.
:nnlmu mum:
» u "mu-1
umllmslhu mm
Fig. 2 Controls
12 HOUR/24 HOUR DISPLAY SELECTOR
(Not on some models)
AC POWER CORD (Some models are equipped with an
AC Inlet instead of an AC cord. Connect wih an ap-
propriate power and)
AC OUTLETS (Switched)
Page 12
V. ADJUSTMENT
Dr- too I DT-zco
TP (Dr-too)
wimm
lesseeoo to
16566.99? #5
FREQ, COUNTER
flflflflflfl
wannabe)
(ca PW. -1
MAW Pic BOARD
L" DDD DD
FUNCTION : PERJoD
Fig. 7 Instrument Connections
FRONT SIDE MAIN RC BOARD
Pea-4
Fig. 5 Main [C Board PCB-4 (DT-IOO)
as I:
499»st an
hymLuscs fl
FRONT SIDE MAlN P.c BOARD
PCB-(2
Fig. 6 Main P.C Board PCB-L2 (DT-200)
REFERENCE PERIOD SIGNAL MICROADJUST~
MENT (Refer to Fig. 5 to 7.) Connect the frequency counter
to TP (DTJOO), TPZ (Ur-200) and pin ® of 1C2, set
function to period.
Adjust the trimmer capacitor C4 so that frequency counter
reads within 16666600 to 16666.699 ,us.
Quick continuation of the timer setting is possible by short
circuiting TPls (DT-ZOO only), as this will cause the set's
time count to become 60 times as large, changing the digit
that would otherwise be for minutes into seconds, and
that for hours into minutes.
NOTE: Disconnect the power cord before short (or release).
TPls.
ll
Page 17
MEMO
16