Pioneer DR-U124X-1 User manual

--
(
(
@PIONEER®
TheArt of Entertainment
Service
Manual
-
DR-U124X-4
DR-U124X-PA
•Refer to the service manual RRV1273 for
DR-UA 124X-2/ZUC/WL.
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Model
Type
Power Requirement
DR-U124X-1 DR-U124X-4 DR-U124X-PA
ZUC / WL
0 0 -DC
power supplied from other system
z - - 0
component
CONTENTS
1. CONTRAST OF MISCELLANEOUS
PARTS ............... .. ............................... 2
2. SCHEMATIC AND PCB DIAGRAMS ......... 5
3. BLOCK DIAGRAM .. .. · ...... ......·.. .. ........ 13
4. IC INFORMATION . ....... ...................... 14
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-k u, Tokyo 153, Japan
PIONEER ELECTRONICS SERVISE INC . P.O. Bo x 1760, Long Beach, California 90801 , U.S.A.
PIONEER ELECTRONICS OF CANADA, INC. 300 Allstate Parkway Markham, Ontario L3R OP 2, Canada
PIONEER ELECTRONIC [EUROPE] N.V . Haven 1087 Keetberglaan 1, 91 20 Melsele, Belgium
ORDER NO.
RRV1274
Remarks
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Ro ad, Braeside, Victoria 3195, Australia, TEL: [0 3) 58 0- 9911
© PIONEER ELECTRONIC CORPORATION 1995 T - DFI APR. 1995 Printed in Japan

DR-U124X-1, DR-U124X-4, DR-U124X-PA
1. CONTRAST OF MISCELLANEOUS PARTS
NOTES:
• Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
• The 6 markfound on some componentparts indicates the importance of the safetyfactor of the part. Therefore, when replacing,
be sure to use parts of identical designation.
• Parts marked by"@" are not always kept in stock. Their delivery time may be longer than u'sual or they may be unavailable.
• When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex. 1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by] = 5%,
and K = 10%).
5600---> 56 x 10 1 ---> 561 .... .. .................. RDl/SPM !iJ W[I] ]
47kO -+ 47 x 103 ---> 473 ... ................. .. .. RD1 /4PS m ITl rn J
0.50 ---> ORS ·········································· RN 2H l§J [gJ WK
1Q -+ 010 ············································· RSlP l§J [I] l§J K
Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k0-+ 562 x 10 1 ---> 5621 ·················· RM1/4PCw w rn ITl F
DR- U 124X -1 /ZUC/WL, DR- U 124X - 4/ZUC/WL, DR- U 124X -PAIZ and DR- UA 124X - 2/ZUC/WL have
the same construction except for the following:
Part No.
Mark Symbol & Description
DR-UA124X-2/ DR-U124X-1/ DR-U124X-4/
DR-U124X-PA/
Remarks
ZUC/WL ZUC/WL ZUC/WL z
MAINB ASSY DWM1490 DWM1489 DWM1489 DWM1493
MOTHER BOARD ASSY (ATAPI) DWX1574 Not used Not used Not used
MOTHER BOARD ASSY (SCSI) Not used DWX1573 DWX1573 DWX1591
EP -ROM (IC702) DYW1418 DYW1401 DYW1401 DYW1423
Front vessel assy DXA1748 DXA1749 DXA1749 DXA1748
Name plat A DAH1775 Not used Not used Not used
Name plate B Not used DAH1776 DAH1776 Not used
Label DRW1649 DRW1647 DRW1647 DRW1654
Packing case DHG1646 DHG1637 DHG1652 Not used No . 1
Poly bag Not used DHL1089 DHL1089 Not used No. 2
Operating instructions (English/French) DRC1021 Not used Not used Not used
Operating instructions Not used DRC1020 DRC1020 Not used No. 3
(English/French/Dutch/Japanese)
Install manual Not used DRB1181 Not used Not used No. 4
Programmed FD (DOS) Not used DWX1589 Not used Not used No. 5
Audio cord Not used DKP3119 Not used Not used No. 6
Audio cable Not used DKP3114 DKP3114 Not used No. 7
Pad L DHA1339 DHA1339 DHA1339 Not used
Pad R DHA1342 DHA1342 DHA1342 Not used
Note) The numbers in the remarks column correspond to the numbers on the packing.
2
(
(
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DR-U124X-1, DR-U124X-4, DR-U124X-PA 11
2. SCHEMATIC AND PCB DIAGRAMS
-
B
-
2.1 OVERALL SCHEMATIC DIAGRAM
ls'302I
LOADING SW
(DSK1001)
POWER
r---, DKP31 03
1 n---'--------1r1 LP S1
I
: ~>+------iC:
2
GND
I 3 LPS2
, ___ ..J
,-----------------------------------,
REFLECTION
~17->
I
I
I
I
I
~
CBJECTIVE
LENS
HOLCXliRAtvi LASER UNJT
LTOH46MS
,-----------11"~!........!<1 vcc
t-t-.-J(2 VR EF
GND
e-;c >-----+------< 1--"-~%4 LO
1-----lls GND
6 MD
vc
'--1------1 >----"" f---He VE
~--<f.-.
'--+--~>---1 f----1(9~ VA
GND
.----~>---1 f----1~1 VB
~-~ VF
,---____..,___~ r----1~~ ACTT+
3 4
SCSI HOST INTERFACE
ICN1 01 I
lcN7031
I
DEVICE
CONFIGURATION
JUMPER
I CN401
5
AUDIO OUT
I CN601 I
SLDF
SLDR
JNSW
GND
MOTHER BOARD ASSY
(SCSI)
(OWX1573
DR-U124X-1, 4)
ICN201 I
(DWX1 591 DR-U124X-PA)
(1 /2 : ~ SCH-2Fl
(2/2 :~ SCH-3F)
I
I SCH_..:1 Fl
INSW UN[T
(DWS1 246)
lcN901I
INS[DE SW
MOTOR COIL
f----1d'9i ACTF+
W COi L il)f---i{1"1)t---'
c
-
D
P!CkUP ASSY-S
(DXX2267)
ACTF+
'--::-::---,.-,,..-~ J---1~, ~ AC TT-
ACTUATOR ASS ' Y I
I
I
________________________________ _ __ J
EM+
B
EM-
R
DR-U124X-1, 4
ONLY
i--------1
LOADING MOTOR
(DXM1 077)
JA601 I VR601 I
I I
I I
I I
I CN501
DR-U124X-1, 4
ONLY
V COIL
U COIL 91)1-----ml)t------'
H-
W-
w+
v-
v+
u-
u+
H+
HALL ELEMENT
SPINDLE MOTOR ASSY-
(DXX2256)
DKP3105
0702 1----,
I 5702 I 5701
I I
I
I I
'------L.-,..J---+--\ ~---;.i----------------1
PHONES I PHONE VOLUME I
L _______ ...J
BUSY I ND l CATOR IPLAY SW I E-JECT SW
._ ____ !
6
51 SCH-
1
F IOVERALL SCHEMATIC DIAGRAM OVERALL SCHEMATIC DIAGRAM I
SCH-
1
F
..,
1 I 2 I 3 I 4 I 5 I 6
(
A
B
---{
-
c (
D (
I

I
I
1
(
(
I
A
8
-
c
D
I
1
2.2 MOTHER BOARD ASSY (SCSI)
CN201
52207-16.90
IL
I
I
u
(f)
•
(f)
I
>-
(f)
(f)
<(
GND
Q.
::J
VF
"
u ACTT+
Q.
ACTF+
AC TF -
AC TT-
LlN
LOUT
IL
""
I
I
u
(f)
DRCT
•
EM+
EM--
INSW
u_
'l'[SL -f'
~ SL-R
!
VR
F101
VTH 1033
F
"'
~
INSW UNIT(D W S1 245)
S4i ~~2i<-s- ----- - -- -- - -;-
) TO SL! DER MOTOR !
[JI DETCCT<ON SW !
D D5G104B
S901 J
---- -- - ----- - ---
o-
~1A
SLDF
SLDR
I NSW
v+so
~
~
V+S A
GN DA
V+SA
[
c~~~;~~ !'
er +sv
~Q. W G'° l~t- t"--+-....::.., >-- _::_~~-..~
G'°
F MC
+1 2V 11;1)1---f""l-__:, I-...::_;
VT H 1033
F103
SCH-2F
V+12
C24 2
0 . 1
C2 4 3
0 . 1
MOTHER BOARD ASSY (SCSI) (1/ 2)
1 I
2 I
2 I
VREF
SPINDLE
MOTOR
ASSY-S
( .. SCH-1F)
VREF
3
V+S A
( .. SC H-3 F)
TCMF
..,___._ __ __,.,
I
~T~ ~T~
Ut e uf 0
VR EF VR EF
!SPINDLE DRI V Ei
VREF
V+ 2
4
DR-U124X-1, DR-U124X-4, DR-U124X-PA
11
~~~~~~~~~~~~~~~~~~~
M OT ER BOA RD AS SY ( SCS I 1/ 2)
(DW X1573 DR - U1 24X-1, 4 )
( DWX 159 1 DR - U1 24X -PA)
V+S
~ I
( ... SCH-3F )
V +SA
V+
L RC K
L OVT J
GND A UD I 0
GND O UT
ROVT
r l
I I
*1 I I
I I
I I
I I
I I
I I
I I
cs:
DR-U1 24X DR- U1 24X
- 1 , 4
-PA
R60 5
R6 0 5
30K 2 7K
R 61 1
R6 1 2
I I
I I
I I
V+!>A I I
I I
I I
( .. SCH-3F)
j;jJTE
---- -- ~- -+,JI' Q6 0 1
DTA124E U I I
I I
G 0 I
I ~----------------!
1
1
0
~ ~~~~
9
H EAD P HOOE.J ~:~, K I
OKN1 1 23 I
I ,~~~t 3 ~---- --"- · I
I ~- I
I OTL 10 40 PHO NES I
Ill '~~ j ~.. h: :
G~D I
I I
I I
I R0 31 ~ I
I I
I I
( .. SCH -3FJ I •• ,,~ I
FG PL
8
-
c
-
'=========-~~~~~ ~ --!.--f--~~ ~~~ ~L--1.- ~ :__J I I
I DR-U124X - 1, 4 ON LY I D
L-------------~-------------~
MOT HE R BOARD ASSY (SCSI) {1/ 2)
.__s_c_H_- _2_F __, ls
3 I 4 I 5 I 6 r

---- _ ~ ---=------~!'
DR-U124X-1, DR-U124X-4, DR-U124X-PA . 3 I 4 I
-
B
-
c
-
D
~ ~~~=~~:~~~;:"--------------------------------------------------------i---------,
I (DSP)AOllf~~"'-'---------------------------------------------------------+--------,
~ (DSPJ BCK~A~-------------------------------------------------------t---------,
u::[:g~:: s~~
• ~g~=~ ~~~~ ~:~::::::::::::~::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::.=';::::::::::::::::::.:;-·
'-J ~g~:~ c~~ ~~:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::-;:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::_:;---+----,
"-~~~~~--:;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::=:;;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::;::::::::::::W.--l.~~-l-W-l-W4.---..
I BUSY LED I
V+SA~
~~ ~ORANGE
~E .l
~.Jt>"\-'.'.=-~BUS Y
~To101
f!-/ DTC1 24EU
.~.
V+SA
~}
1 --------- ~PLAY
lo DN R- LU12 4X-1 , ~~n -1
I y ~~.!¥ I
I :;~-u, I
I IPL Ay SW I D I
L-------- ~~J
V+SA
V+SO
F601
1"22g~
G J.lo
V+SD
~ v~~~2
C R~~ :.k
NO C~hi
c?2 0 N ...
O '. Oo1pco
~ l s_Y_s_T_E_M_R_E_S_E~T I •NCO
GNOO
_ SC.
v+so
~
IC707 ...
-=1~ [;To
' ~'~u: ~- --'IA '-' vc~~
1 --------------------- -r ------Vj:;;o- r- r---r- -r ---------vv+fs~a,--- f'-'i; ~ii:~L===~i,. ~~~
I EJECT
v+so v+so
_t1 LPS1
V+SO
V+SA
(
CN703 ~ ~~
538 - Z~SM3 A -TF :J_ :~ ~j.f
LOAD I NG L PS1 I~
SW ONO 2
..
)
ft LPS2
( SCH-1 F LPS2 ~IC·~ + i --t-~f---"
oWoo ~ t ~~:
vb.. l'~"' ~"'---'I"~ ~~~
~o,--rtj~--;:-~i~ ,o -' l_ - ~~~~·~--:-~-+-+----t---tr--. ~f • "'-'-'='-'-~ - . ~ o .,.f~ O ~~~~
~ lb~ 'J vcc~
~ :~: ~ ~15 p~~
~ v+so 001 4 A1~~
..C 5°;J; ~ie ~ :;; ." "' "00 ~~;lii:i=---~~is,.,.,..
lr:--t
00
ID k--:--::-? ORCT v+SD ~ :; n f :~ ~ L ~~ ~~e=- -- :!t=~~ ·
D SW O~o p s ~a
1
C}i...,,.J.m~ lt Nra_!lrbo!i!•""m~~i<l,,,!!1.,,~.~~aaaNlll_lloaslluolJ-l3ola;jf"'tl,lsc._ "l~T~SCH-2F )_G( .. SCH -2F ~:g ~ : 1C~r ~ A:~~ :!ii,
oossww'2· ~o p s~ ;; ;; ;; ;; ;; ;; gggg g gg gg g \Ix x '!2 a.._ lsT/spp;'S T/ SP \~ DTC12<EU l::t:11 " iv < 1~
. ~ D p s #2 <( <( < <( < < <( 4 <( < < < < < <:( <BVSY-LEDtze:: ft BUSY '-..!..' Q702 ig.<f ~~~ v!~~ A nq.
(
TC 1'F A H•1• svsra. Resrrln.. ~- A 7~ ADB ,
(
..... SC H 2F ) . ':"'._ bi;. ff CCE (OSP)) l Ano< I ,. ""- A "7.
J
...,. - <o sP1 FL GA~ TRI< PlA...SE <FAST) ccEES: "'3:1' avcK cosP) c• scH-2F L ~OQS ~:12&:: ::::Aa6..
L OADJ NG ( ocQ.1.o, p E...,. ~TRK PlA.SE!SL""' sucK>"tM."-+-+-------__,f------+-+-+-~ SL T ~g: l;s_ • as.
M OTOR EM+ 0--~ .,,I ~--~ A E..... ( .. SC H- 2F l B/12 ~ ~; ' "12CM SLTNCP 73 l( ... SCH 2Fl L =1" ·.:ia ::Ah
.,_ Q T ,.- LE ».. - I= I' "''" - l ~:~ '. f2>_ AD3 .
(-> SCH-1 F) E RD ~
1
~! ~~~ G~ o :=:t:::l:ooRDo :~[z,L An ... .
<at SC H- 2F) ;::".jv ss N C~ RD<>.._ L2I ADl'-Y--:Aru:..awvi
V+50 ~ '--1 ~ WR WRHXLX NC r-•
V +SO OSPJFL!lA ~ I I NC~ oao IC702 G1!!,D
OSPJ F LG8A~ --:-;JFFLA L·~·. CPU NC~ AM2 7C1024 120DC
[ it1
g~ :: :~~~ --"' FLA--;; c . )C701 . ~~E ft J -
RE M OTE ~~~I g.: 1 17. it'll~ -:-:-u_ao_ ~:~G I~ M39 0T&7 8 L1c:.;;~a~~~===::::'fl~ ~~ [ :JoR-U124X-1 , 4IDR-U124X-PA
~
701
_,_. i.z._ ft sPFW L1c102l DYW1 401 l DYW142 3
CO N TROL :~oh "d _, =.zd~~ -s w :::l&i J1 BPRV :.: :.: :.: :.: :.: :.: :.:
*' JNs w.., [ <D SPJ sPoA--is;;:::: -ZllsPOA /EXTS.1§2._ ~F LG D cosPJ <• SCH-2F) ~t~ o o o o _
1
~
GNOO 0- ~ (SL-FV<> /REV) co:~~ :?~ ~~ :g~:: ~ J ~ J ~ J~ J~ J~ J! J
(DSP ) SPCK ~ '=:i;1 VCC ls:z_ ::PFGPL ( ;_;: :_;: ;_;: :,: :.;: ;_;: ;,.:
C at SCH -2F ) SL-f' ~ ~~::=~(""""') ~~~7"j~;~F'"++- -- ~-<> •s~e~s vv•1o~s=P~) ---- -~ ( .. SC 2F) !DSPJ 100~~ ~ ~
~ (SPOL - PMJ / REV) OSP~'::' , i'"E"-"+-+--_,_.~ -·'== , ..... SCH 2Fl H- (OSP) 1001 "'-"- - ----+-+-+-+ -+-+_. __ _u.n_-""Yi::;l<1~ 1 ei1 ~L-
'-' SL - R ""'--"-" ~ SLNC-RE V("""") ~· ""- ftWTE ..... -1"-' I ..
'- IOSPJ 1002 ~ ·- - k~·· lfM_
OECORO - INT~ - "'- _ .lD
2-
r--~ ~f
~NC:;;v;8it~~~u;~~lll:tlll\lll' HSTXe-< os w o~ ~{OS W D)k?) ~
... .,NC~~ ~~~~ ffi ffi 6 ffi ~ ~ ~ ~ ~ ~
2
~ r--~ '? ~ -
TF°"' """'°" lrsl !&\\.-
( .. sc.~~ ~ l ml ;" LIM• ''t"i'I'I'r'1 ru.so v+so osw1 "'- ..Ii.&, '°' w' ~ ©\--
~=~~~ iSo ~ GT [itj~ (~741) 1 o'* < OS W 2 ~ N& ._ !OSW2l.~
5 I
LE
ASS Y
(SCS I
MOT ER BOARD
(DWX1 573
(DWX1 59 1
DR -U1 24X - 1, 4 )
DR -U1 2 4X -PA )
ATN
ITERMINATDR I
V+50
0
m
D
1C804
SCH-3F
s MOTH
ER BOARD ASSY (SCSI) (2/2)
- "'-' 3~60 U < ~ '302 28-HC
rw1~ 0 .llba _PPLA Y JaJaJaJ ~;~ r ~;o
'------:.<>~•E J ECT ft BUS3 !D S PJJ [os wo 20 <B/ S12 J CON FI GURATION
J;1 sus2 1osPJ losw1 TE ST J JUMPER
'--L._-_-_-_-_-_ - _--:_--:_ -_-_-_-_ -_- _ -_- _-_ - _-_ - _-_-_ -_-_-_ - _-_-_- _-_-_ .._-_ _,__1- _ -_,-+_- _ -~ft"' :::.,"...aus.1 (05?) c m> SCH- 2F) Losw2 E.JEC T SW LOCKEC?_]
~ ---- ------- ---- ---- +- - ft~ BUS O COSP)
MOTHER BOARD ASSY (SCSI) (2/2)
1 I 2 I 3 I 4 I 5 I
6
iscH- 3F I
2/2 )
ONO
so•
GNO
sos
GNO
=
ONO
SC7
GNO
SOP
GND
GNO
(/)
u
(/)
SCH-3F
6
(
A
(
B
c (
D (
I

-----
I
I 1
I A
MOTHER BOARD ASSY (SCSI)
B
--
-
c
D
I 1 I
DR-U124X-1, DR-U124X-4, DR-U124X-PA
2
•This diagram is viewed from the pink col-
ored foil side.
•This PCB is double sided.
I 3
VR 201
VR601
I PCB-lF I
Q603
Q602
IC804
IC803
IC702
IC703
IC707
IC709
IC801
IC701
Q601
IC802
IC601
IC713
IC30!
Q206
IC204
IC202
IC205
IC203
Q401
Q403
IC404
IC5 01
IC402
I C4 01
0702
Q61 9
Q620
IC405
IC602
0701
1 1
A
-
B
-
c
-
D·
r

A
-
8
-
-
a
1
I ~r -a:iq I
12
EOaO
soao
l>OB:JI
EOB:JI
SO\:JI
£On I
80\:JI
!OB:JI
!O\:JI
rnao
SOB:JI
10a::i1
tOE:JI
aoso
l>OS:JI
sos::n
aos::n
EOS:H
!OM)
EOMJ
l'Ol>:JI
rna::n
SOl>:JI
! Ol>:JI
SOHl
etao
osao
cOl>:JI
soa::i1
10\0
!OSAV
!OaRV
• This diagram is viewed from the gray col-
ored foil side.
•This PCB is double sided.
E I
I'
(12:J2) Y22A GAA08 A3HTOM
s I
I
(
A
8
---( -
(
a (
I

--'
w
~-~
~
r·-·-·-·---1-· -·-·-·-·-·- 1 -.- ·J
DR IVER
I C401
BA5797FP
I C501
BA5840FP
---
-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·- ·-· -·-·-·-·-·-·-·-·-·-·-·-·-·-··
PRE .AMP
-{>-
I C204
TA2055F
D RCT
EFM
--
FE _
.,..
TE -
-..
-
-..
-'- 0
,-.i
LP F L AUDIO
R OUTP UT
33 .8588MHZ
1.::1
DIGITAL SERVO I--
SIGNAL
PROCE SSOR
IC3 01
T C'3405F
J--------J
• -
,..
RAM
54 kX1 obi t
IC8 02
KM58 1 000B LG-5
' 8 f 15
• •
RO M
DECODER
IC 801
LC8'351 2N -V7'3
•
~
f
~
t
I
I
In
18 I TERMINATORS U'
~ W ITH SWITCH
IC803 !4f--~
BH95'30FP -Y
HEADPH ONE
OUTP UT
SCSI
CONNECTOR
15 ADDRESS 8
15
•
CPU
I C701
MB'lOT578
L
- /
t:Q 4MHz
1
EP ROM
54kX15b i t
IC702
DYW1401
CDR-U1 24X- 1, 4)
DYW1423
C DR - U1 24 X- PA)
+5 V ~
+12V ~
I
I
I
·-·-·-·-·-· -·- ·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-· -·- ·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-·-· -·- ·-·-·-·-·-·-·-·-·-·-··
I
-- ~
w
.
CD
r-
0
n
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c
-
)>
G)
::a
)>
s I c
:c
I
c
...l
N
~
I
...l
..
c
:c
I
c
...l
N
~
I
~
..
c
:c
I
c
...l
N
~
I
,,
)>

•
DR-U124X-1, DR-U124X-4, DR-U124X-PA
4. IC INFORMATION
• The information s ho wn in the list is ba sic in fo rm at ion a nd ma y not c or-
respo nd exactly to that shown in the schematic diagrams.
• LC89512W-V79 [IC801 : MOTHER BOARD ASSY (SCSI)]
• ROM Decoder
• Block Diagram
EXTERNAL DATA BUFFER RAM
I
1 00- 107
LC89512W-V79
ll RAO-RA17
RCS ROE RWE
1- --- -.-- - - _- _.__ · _ -_-_-_-_-_-_-_-_-_-_- _ -_-_- _,_ _· _-_-_- - - - "'j XT ALCK
I I ~
CD -DSP
• Pin Function
No. Pin Name I/O
-
1 DB7 I/O
2 Vssl
-
-
3 DBP I/O
--
4 AT N
5 Vssl -
-
6 BSY I/O
--
7 ACK
8 Vssl -
1 4
I DRAM I/ F BLOCK I D
I
I ~ T AL
...
-
-
...
LR CK
BCK
SDATA
C2 PO
MCK
I
I
I
I
WF CK
E XCK
SBSO
..
...
--
CD - ROM
DE C ODER
BLOCK
SCS I l/F
BLOCK
-
...,-
__,
~
----
DB7 - DBO
--
DBP
-
/
--
-
.....
--
BS Y
ACK
--
RST
-
] / 0
--
M SG
SEL
AIN
-
C/ D
SC OR 1
~-------------- - - -- -- - - - · _____ J
CS RD RS
r WR I NT SW AIT
D0- 07 ,
MICRO COMPUTER
Description No. Pin Name I/O
-
SCSI terminal 9 RST
I/O SCSI terminal
--
GND for SCSI I/F driver
10
MSG
HO ST
COMPUTER
Description
11 Vssl -
GND fo r SCSI I/F driver
SCSI terminal -
12 SEL I/O SCSI terminal
GND for SCSI I/F driver 13 CID
14 Vssl - GND fo r SCSI I/F driver
SCSI t er minal
--
15
REQ I/O SCSI terminal
GND for SCSI I/F driver 16 I/O
(
(
(
-

•·
DR-U124X-1, DR-U124X-4, DR-U124X-PA
No. Pin Name 1/0 Description No. Pin Name 1/0 Description
-
17 Vsso -
GND (Logic part) 73 RD I Data read signal input of micro-computer
-
18 IOO
Data buffer RAM data signal
I I 1/0
25 107 (built-in pull-up resistor)
74 WR I Data
wr ite signal input of micro-computer
-Chip select signal input from
75
cs
I micro-computer
--
SCSI block interrupt/request signal output
26 I NTl 0 (setting
at register) 76 RS I Register select signal
27 Vsso 77 Vsso -
GND (Logic part)
-
GND (Logic part)
---
28 Vsso 78 SWAIT 0 SUB-CPU wait signal
29 DO
Micro-computer data signal
I I 1/0
36 D7 (Built-in pu
ll -up resistor)
79 EXCK 0 SUB-CODE output (connected to CD-DSP)
80 MCK 0 Oscillation frequency output of
XT ALCK
--
Interrupt/request signal output to .
37 INTO 0 micro-computer 81
TES TO
I Input terminal for
test (Vsso)
--
82 RCS 0 Chip select signal to RAM
38 XTA LCK I X'tal oscillation circuit input
--
83 RWE 0 Data write signal to RAM
39 XTAL 0 X'tal oscillation circuit output
--
84 ROE 0 Data read signal from RAM
40 Vsso -GND (Logic part) 85
41 VDD -Power su pply I
NC NC Not connect
88
42
RAO
Address signal output to data buffer RAM
I I 0
59 RA17 (built-in pull-up resistor) 89 VDD -Power supply
90 Vssl
-
GND for SCSI I/F driver
60 VDD -Power supply - -
91 DBO
61 Vsso -GND (Logic part) 1/0 SCSI terminal
--
92 DBl
---
62 RESET I Reset terminal 93 Vssl -
GND for SCSI l/F driver
63 TESTl
--
94 DB2
64 TEST2 I Input terminal for test (Vsso) 1/0 SCSI terminal
--
95 DB3
65 TEST3
96 Vssl
-
GND for SCSI I/F driver
66 WFCK
--
97 DB4
67 SBSO I SUB-CODE input (connected to CD-DSP) 1/0 SCSI terminal
--
98 DB5
68 SCOR 99 Vssl -
GND for SCSI I/F driver
69 SDATA I CD-ROM, CD-DA serial data input
--
100 DB6 110 SCSI terminal
70 BCK I CD-ROM, CD-DA ser ial data input clock
71 LRCK I 44.1 (88.2) kHz strobe signal input
72 C2PO I C2 point er input
1 5