Max. 40X CAV ATAPI
CD-ROM DRIVE UNIT
DR-944/ DR914
Operating Instructions
Pioneer Electronic Corporation
OB-U0192
Name of Parts/Function/Setting
FrontPanel
1 . Disc Tray
Tray loading-unloadingisdonebypressingtheejectbutton.
PlacetheCD-ROM onto the tray with thelabelfacingup.
Place a disc onto the inner lower groove on the tray in case an 8cm disc is used.
Press the eject button or push the front part of the tray gently to load disc tray.
2 . Head-Phone Jack (PHONES)
Stereomini jackforhead-phone.
Adjust “VolumeControlKnob” minimum position before head-phone is connected.
The audiooutputof rearpanelisactiveeven whenhead-phone plug is inserted to this jack.
3 . Volume Control Knob
(Head-Phone Level)
This is the volume control knob for adjustingsound levelfor head-phone.
When theknobisturned totheright, the head-phone volume goes up, and turned totheleft, the
volume goes down.
4 . BUSY Indicator
Itislitwhendataonthediscisaccessed.
5 . EjectButton
This button is used toload and unload the tray.
6 . Forced Ejection Hole
Whena disc is stacked in the drive and the eject button does not work to open the tray, insert a stiff rod
into this hole and push gently so that the tray comes out. Unload the tray by hand then remove the disc.
Do not use the Forced Eject Hole except emergency case, use the eject button in normal operation.
Before executing this operation, turn off the power supply and wait morethan 1minutetilldiscrotationis
stopped.
Name of Parts/Function/Setting
3
OB-U0192
Rear Panel
1 . DC Input
Pin
1
Name
+12
G
Function
Powersupplyinputof DC +12V
Ground
2
3
G
Ground
4
+5
Powersupplyinput of DC +5V
2 . ATAPI Interface
It should be connected with the Enhanced-IDEportofthecomputer. Use40pinflattypecable.
Length of the cable is less than 18inchs(46cm) according to the ATA specifications.
Itmay cause data transfer error, if longer cable more than above value is used.
Pin
1
2
3
4
5
6
7
8
Name
RESET-
GND
DD7
DD8
DD6
DD9
DD5
DD10
DD4
DD11
Pin
11
12
13
14
15
16
17
18
19
20
Name
DD3
DD12
DD2
DD13
DD1
DD14
DD0
Pin
21
22
23
24
25
26
27
28
29
30
Name
DMARQ
GND
DIOW-
GND
DIOR-
GND
IORDY
CSEL
Pin
31
32
33
34
35
36
37
38
39
40
Name
INTRQ
IOCS16-
DA1
PDIAG-
DA0
DA2
CS1FX-
CS3FX-
DASP-
GND
DD15
GND
(KEYPIN)
9
10
DMACK-
GND
Remarks: The minus sign indicates active low.
4
OB-U0192
Name of Parts/Function/Setting
3 . DeviceConfiguration Jumper
Switch turns on by inserting short socket.
Make sure that drive power is turned off before jumper setting is changed.
OnlyMAis “on” atthetimeofshippingfrom theplant.
Pin
1
Name
MA
Function
on The drive is used in Master Mode.
on The drive is used in Slave Mode.
2
3
4
5
SL
CS
on
Using “Cable Select” function.
Reserved
Reserved
4 . Audio Output
A connector for output of analog audio.
This connector is compatible with “Molex 70553” , choose a connection cable which matches with the
connector.
Pin
1
Name
Function
L
G
G
R
Leftchannelaudiooutput
Ground
2
3
Ground
4
Rightchannelaudiooutput
5
OB-U0192
Specifications
1. Disc Format
·
·
·
·
·
·
·
·
CD-ROM Mode 1
CD-ROM XA Mode2 (form 1, form2)
Photo CD ( single and multiple session)
Video CD (4.4x– 10x)
CD-DA (4.4x – 10x atAudioPlay, 8.8x – 20x at Read CD-DA )
CD-Extra
CD-RW(read only, 4.4x –10x)
CD-I Ready
2. Disc Size
·
·
12 cm
8 cm (4X at data disc, Horizontal operation only)
Precautions on playing CD singles(8cm discs)
An 8cm disc can be played only when the drive is horizontal condition and the disc is set in the
8cm groove on the disc tray at loading.
Do not use an adapter for 8cm disc in any conditions for this drive, or malfunction may occur.
3. Data Transfer Rate
Parameter
Min.
2250
Typ.
2415
Max.
2625
Unit
Note
inner
Sustained
kBytes/ sec
Max. 40X CAV Mode
outer
6000
33.3
kBytes/ sec
MBytes/ sec
Burst
4.0
Maximum data transfer rate is specified with a disc of 1.2m/s linear velocity.
4. Buffer Memory Size
·
128 kBytes
5. Access Time/ Seek Time
Parameter
Min.
Ave.
70
Max.
140
Unit
msec
Note
Random Average
CD-ROM Mode1 Disc
Access Time
Random Seek Time
Full Stroke Seek Time
60
90
msec
msec
Random Average
160
300
6
OB-U0192
Specifications
6. Initializing Time/ Starting Time / Finishing Time
Parameter
Specification
Note
The period from a disc is set in the drive till it becomes
pause condition after initialization.
Less than 10 sec
Initializing Time
The period from stop condition after finishing
initialization till it becomes pause condition by executing
start command.
The period from pause condition till disc rotation is
stopped by issuing stop command.
Less than 10 sec
Less than 7 sec
Starting Time
Stop Time
7. Loading Time/ Unloading Time
Parameter Specification
Note
The period from a disc starts loading till it is clumped in
thedrive.
Loading Time
Less than 4sec
Less than 4sec
The time of disc unloading with stop condition by
pressing the eject button.
Unloading Time
8. Audio Characteristic
Item
Specification
Note
Line out
0.7 ±0.1 Vrms
10 k ohm Load
Output level
Head phoneOut
Line out
0.45 ±0.2 Vrms
Over 80 dB
32 ohm Load
JIS A-Weighted
20kHz LPF ON
S/ N Ratio
Channel Separation
Frequency Response
THD
Line out
Over 65 dB
Line out
20Hz~20kHz
Less than 0.1%
+1/ -3 dB
1kHz0dB
20kHz LPF ON
Line out
Pioneer Electronic Corporation
4-1, Meguro 1-chome, Meguro-ku, Tokyo 153, Japan
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