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AUDIO DIGITAL TIMER


DTI 5OO
MODEL DT-SOO COMES IN SIX VERSIONS DISTINGUISHED AS FOLLOWS:
Type Voltage Remarks

KU 120V only U.S.A. model

KC 120V only Canada model

S 1 10V, 12OV, 22OV and 240V (switchabte) General export model

S/G 110V, 120V, 220V and 240V (Switchabte) U.S. Military model

YB 240V only United Kingdom model

NE 22OV only Europe model


r This service manual is applicable to the DT-500/S,S/G. When repairing the DT-500/KU, please
see page 11, and for the other types, please refer to the additional service manuals.




CONTENTS
1. SPECIFICATIONS 2 ADDITIONAL SERVICE MANUAL (For KU modet)
2. PARTS LOCATIONS 2 1. SPECIF ICATTONS 11
3.FRONTPANELFACILITIES ....3 PARTS
2. CONTRAST OF M ISCELLANEOUS 11
4.EXPLODEDVIEW .....4 3.PARTSLTST. .......12
5. SCHEMATICDIAGRAMS.... ........ 5 4. SCHEMATICD|AGRAMS.... ....... 13
6. P.C.BOARDCONNECTIONDIAGRAM,. .. .... 7 5. P.C. BOARD PATTERNS 15
7. PARTS LIST . 9
S.PACK|NG ......10


PICINEEFI ELECTFICINIC CCIFIPOFIATICIN 4-1. Mesuno '1 -chome, Mesuno-ku, Tokyo 153, Japan
U.B. PIONEEFI ELECTFICINICA COFIPOFIATION 85 Oxfond Dnrve, Moonach e, New Jeesey O7O74, U.S.A.
PICINEEFI ELECTFICINIC (EUFICIPE! N.V. Lurthagen-Haven 9, 2O3O Antwenp, Belgrum
PIONEEFI ELECTFICINICB AUATFIALIA FTY. L?El, 178-1A4 Boundany Foad, Bnaesrde. Vrcto.ra 3195, Austnalra
FU O l\4AY 1980 Printed in Japan


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1. SPECIFICATIONS
Timer Section M iscellaneous
Display of Time .
isplay of f luorescent Digital d AC outlets Capacity Power. . . b00W max. (inductive load)
display tube Power Requirements S, S/G models; AC 11ov l12ov I
Timer Type .24-hour type (12-hour display and AM/PM) 22OV l24OV (switch abte)
Tirner Set . Only one ON/OFF time setting in minimum 50H zl60Hz (switch ab e ) I

units of minutes within a 24-hour period Consumption
Power . 6W
Timer Setting lnterval . 1 minute Dimensions . 420(W) x 144(D) x b0(H) mm
Sleep Timer Type . On time duration; 1 minute 16-9116(W) x 5-11116(D) x 2(H) in
to t hour 59 minutes Weight (without package) 1.7 kg (3 lb 12 ozl
Accuracy of Time . Synchronized with line frequency
Fu rn ished Parts
Accuracy of Timer - ON time accuracy; Delay
time to displayed time Max. +0. 1 second Operating lnstructions 1


Accuracy of Sleep Timer . Delay time for OFF to N OTE:
Specifications and the design subject to possible modifications
displayed time; No more than 59 second
without notice due to improvements.




2. PARTS LOCATIONS
These parts locations are applicable to the DT-5O0/KU.
o The A marh found on some component parts indicates
the importance of the safety factor of the part. There-
fore, when replacing, be sure to use parts of identical
designatian.

Front Panel Front View with Panel Removed
F ro n t pa ne I assem bly
Bonnet case Switch assembly Potary switch
AN 8.935
ANE-318 GWS-257 ASD80



,I
ll "*tT..



I

Push knob Push knob K nob Tact switch Fluorescent indicator tube
AAD-2sI AAD -251 AAB -222 ASG.163 AAV.O14


Top View with Bonnet Removed Rear Panel

Timer assembly Switch assembly A AC socket (AC OUTLETS)
GWX-527 GWS-257 A KP{40



:: : ::
!:::l:::liii




I Power transformer
I Relay ATT.722 A nC power cord r'3
ASR -503




2
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3. FRONT PANEL FACILITIES
G;"".:-"J,;;l '::j*,"".:'*;-;[,;*




e Ac ourLET sELEcroR
(OFF/ON/TIMER)
@ TIMER INDIcAToR
This indicator lights when the AC OUTLET-TIMER
The AC OUTLET selectors are used when switching on switch has been depressed.
and off the power to the components connected to the
timer and thereby activating the timer, and also when @ TIME DISPLAY
giving priority to the timer function and switching on and The following displays appear in line with the position
off the power manually. of the mode selector.
OFF: When this switch is depressed, the power being
MODE
supplied to the connected components is switch- TIME DISPLAY
SE LECTOR
ed off.
ON: When this switch is depressed, the power to the SLE EP
lrme remaining until the sleep timer goes
OF F.
connected components is switched on.
TIMER: When this switch is depressed, the power being TIMER SET-OFF Time set for the timer switch to go OFF
supplied to the connected components can be TIMER SET-ON Time set for the timer switch to come ON.
switched on and off by the timer switch func- CLOCK Present time in hours, minutes, AM or PM.
tion. Rightmost minute digit and second dis
SECOND
play.
@ TIME ADJUST SWITcHES When the clock is set to the present time,
These switches are operated when setting the present CLOCK ADJUST the time is displayed in accordance with
clock time, the timer switch ON-OFF times and the sleep the operation of the time adjust switches.
timer OFF time.
SEC RESET: NOTE:
This switch works when the mode selector has "AM l2:OO" or "0:OO" may flash on the time display when the
been set to the SECOND position. When it is timer's power plug has been connected to a household AC outlet
or when the power is restored after a power faiture during actual
depressed, "0:00" appears on the display and
when the switch is released, the seconds .operation.
are
counted ("0:00" - "0:01 " - "O:02"1. @ MoDE sELEcroR
REV: When this switch is depressed together with the This is used to select the timer switch functions.
FAST or SLOW switch, the displayed time is SLE EP: Set here to set the sleep time.
put into reverse. The switch does not work when TIMER SET-OFF: Set here to set the time at which the
the mode selector has been set to the SLEEP or power to the connected components
SECOND position. is to be switched off by the timer.
FAST: When this switch is depressed, the displayed time TIMER SET-ON: Set here to set the time at which the
is forwarded quickly. power to the connected components
SLOW: When this switch is depressed, the displayed time is to be switched on by the timer.
is forwarded slowly. CLOCK: The present time is indicated on the
@ AC OUTLET TNDTCATOR time display. The mode selector is

This indicator lights when power is being supplied to the normally set to this position.
AC outlet on the rear panel. SECOND: Set here to set seconds of the present
time correctly. Also set here to check
the rightmost minute digit ofthe
present time and the second display.
CLOCK ADJUST: Set here for setting the present time.




3
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trDT-50cI

4. EXPLODED VIEW




3
1



$
3
,d
$




1-<6\ J
15
p
>---v \ 20



'\ r




5 --62-




:'ff 10 Pi
15 I


\ -3

P 1



I/O TES:
o Parts without part number cannot be supplied.
o The A mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts ctf identical
de signatio n.
Parts list
Key No. Part No. Description Key No. Part No. Description

1. AE C-609 Foot assembly 11 . ABN -O24 Nut
2. AN 8-935 Front panel assembly 12. BBT3OPO8O FZK Screw
3. VBZ3OPO6O F MC Screw 13. AN E-31 3 Bonnet case
A +. ATT -724 Power transformer A r+. ADG-046 AC power cord
5. PMZ3OPO6OFZB Screw 15. AEC-384 Nylon rivet

6. BCZ30P080FMC Screw 16. cwx-526 Timer assembly
7. GWS-256 Switch assembly 17. Rear panel
8. AAD-251 Push knob 18. AKP{40 AC socket (AC OUTLETS)
9. Chassis A r g. ASR -so2 R L1 Relay
10. AAB-222 Knob A zo. AKXo63 59 Line voltage selector

21 . AEC-327 Strain relief
22. AEC-725 Acrylic filter




4
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7. PARTS LIST
NOTE,
. When ordering resistors, first conuert resistance ualues into code form as shown in
the following examples.
Ex. 1 When there are 2 effectiue digits (any digit aport from 0), such as 560 ohm
and 47h ohm (tolerance is shown by J = 5V., and K = 107o).
560a-56 x10t-561 ... RD%PS tr6DJ
47hg-47x103-473... RD%PS@A@J
0.5a-0R5 ..... RN2H@@trK
1C,- 010 RSIP@A@ K

Ex. 2 When there are 3 effectiue digits (such as in high precision metal film
resistors).
5.62ha 562 x 10' 5621 . . fiN%SR tr6ED .F
o The [, marh found on some component parts ind.icates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of
identical designation.



7.1 TTMER ASSEMBLY (GWX-526)

SWITCHES

Part No. Symbol & Description Part No. Symbol & Description

ASG-163 S2-S5 Tact switch 10E2 D1, D2
ASD{80 56 Rotary switch (1S1886)
ASHO24 Sg Slide switch AE L-334 D3
AE L.330 D4
CAPACITORS 152473 D5-D7, D9
(1 S2076 )
Part No. Symbol & Description MZ-150 D8
(wz-1 501
cEA 101M 35L C1,C2
cEA 221M 16L C3
OTHER
cEA 470M 50L C4
cEA 470M 25L C5 Part No. Symbol & Description
222K50 C6, C7
CKDYB
Note: When ordering resistors, conuert the AAVo14 V1 Fluorescent indicator tube
RESISTORS resistance ualue into code form, and
part
then rewrite the no. as before.
Part No. Symbol & Description 7.2 SWITCH ASSEMBLY (GWS-256)

RD%PM nDfi J R1_R9 Part No. Symbol & Description

ASG-258 S 1 Push switch

SEMICONDUCTORS

Part No. Symbol & Description

MN6076 Ql
2SC1915 02
2SC945A 03




s
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8. PACKING




IN
6N
\




Parts list
Key No. Part No. Description

1. AHD-841 Packing case
2. AHA-256 Side pad
3. AR 8-383 Operati ng instructions
4. AEA-O4g Rubber cushion assembly




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ElTr500
AUDIO DIGITAL TIMER


KU


1. SPEC|F|CAT|ONS
The specifications for KU type is the same
as the S type except for following sections.

Miscellaneous
AC outlets Capacity Power . . . . Total of two AC outlets
500W max. (inductive load)
Power Requirements . . AC 120V, 60Hz


2. CONTRAST OF MISCELLANEOUS PARTS
NO?ES:
c Parts without part number cqnnot be supplied.
o The I mark found on some component parts indicates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of identical
designation.

Part No.
Symbol Description Remarks
S type S/G type KU type

Timer assembly GWX-526 GWX-526 GWX-527

Switch assembly GWS-256 GWS-256 GWS-257

1\ nlr Relay ASR-502 ASR-502 ASR-503

Asg Line voltage selector AKX-063 AKX-063

Arr Power transformer ATT-724 ATT.724 ATT-722

A AC power cord ADG.046 ADG.046 ADG-023

Operating instructions ARB-383 AB B-383 ARB-385




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3. PARTS LIST
NOTES:
o When ordering reslsfors, first conuert resistance ualues into code form as shown in
the follo w ing e x am ple s.
Ex. 1 When there are 2 effectiue digits (any digit apart front 0), such as i:60 ohm
and 47h ohm (tolerance is shown by J = 5",/,,, and K: 10%).
560n-56x10t-561 ... RDYIPSBtrmJ
47ha-47 xt01-473 .. RDV|PSAA@ J
0.5a-0R5 . RN2H @@@ K
1a--010 .., ...RSIP@E@K
Ex. 2 When there are 3 effectiue digits (such as in high precision metal film resis-
tors).
5.62ha 562 x 10t 5621 . . -RN%SR B@atr r
. The A marh found on some component parts ind.icates the importance of the
safety factor of the part. Therefore, when replacing, be sure to use parts of
id e n t ical d e sig na t io n.



3.1 TIMER ASSEMBLY (GWX-527} OTHER

SWITCHES Part No. Symbol & Description

Part No. Symbol & Description AAV-014 Vl Fluorescent indicator tube

ASG-163 S2-S5 Tact switch
ASDO8O 56 Roatry switch 3.2 SWITCH ASSEMBLY (GWS-257)

Part No. Symbol & Description
CAPACITORS
ASG-258 51 Push switch
Part No. Symbol & Description

cEA101M35L C1,C2
cEA 221M 16L C3
CKDYB 222K50 C6, C7
cEA 470M 25L C5
cEA 470M 50L C4



RESISTORS

Part No. Symbol & Description

FD%PM !DnJ R1-Rg


SEMICONDUCTORS

Part No. Symbol & Description

MN6076 01
2SC1915 02
2SC945A 03

10E2 Dl, D2
(1 S1
886)
AE L-334 D3
AEL33O D4
152473 D5-D7, D9
(1 S2076)

MZ-150 DB
(wz-150)




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