Toshiba Strata Xii, Strata Xx General Description Manual

to be either 8 ohms or 600 ohms. If 8 ohms is 
selected, the output will be via a 3-watt ampli- 
fier on the 
MPRU, and the voice path will be 
one way. If 600 ohms is selected, an external 
PA amplifier or talkback amplifier is required 
and the internal voice path will be 2-way. 
05.12 To equip either of the two relay service 
functions; obtain the optional relay from your 
- Toshiba supplier and install it in the proper loca- 
tion on the MPRU, per Figure 10. 
FIGURE 10 
RELAY INSTALLED WITH SW2...

INSTALLATION 
SECTION 100-020-200 
JUNE 1983 
cover from the power terminal strip on the MPRU, 
and, with the supplied cord, connect the power 
supply to the terminal strip and the MKSU frame 
ground (see Figure 11) in the following manner. 
White: 
Black: 
Green: “24V” 
“OV” 
“FG” on MKSU 
“E” on power supply 
Make sure the wires are connected to matching 
terminals at each end. Secure the power cord to 
the MKSU with the plastic cable clamp that is 
provided. 
06.13 Use the additional green wire packed...

INSTALLATION 
SECTION 100-020-200 
JUNE 1983 
12). Locate the SW3 battery strap on the AMMU 
(Figure 2) and connect the memory back-up 
battery. The strap is shown in the OFF or dis- 
connected position. To connect the battery, 
remove and reinstall the strapping plug so that 
it bridges the center pin with the pin labeled ON. 
FIGURE 12-AMMU ONTO MCAU 
07.02 
Mount the CRDU(s) on the MCBU and 
MDSU (see Figures 13 and 14). Locate the SW1 
battery strap on the CRDUs (Figure 1) and con- 
nect the memory...

INSTALLATION 
SECTION 100-020-200 
JUNE 1983 
07.10 PCB Installation Sequence PCBs (Figures 15 and 16). 
- 
07.11 Install the MCAU/AMMU and MCBU 
PCBs in their correct MKSU positions (Figures 
15 and 16k a) For STRATA’ XII; install #1 MXPU for 
16 or less stations (for MSTU #l , 21, add 
#2 MXPU for more than 16 stations 
(for MSTU #3, 4). 
07.12 install the MINU in the correct MKSU 
position (Figures 15 and 16). 
07.13 Install the appropriate number of MXPU b) For STRATA XX; select the number and...

. .._ m____. .V.. 
SECTION  100-020-200 
JUNE  1983 
llr-lcf YCOU 
MCO”  -MF 
=o 1 
02  
0 
=1 
GL “7 MCOU LiU5.I-U- 
MCOU  MCOU -MF -MF 
‘
Or  PO1 
02 02 
0’  0’ 
ziD1 L 
I 
II 
- 
I=& 
MC.4 MCBU 
I  II 
0 
SET 
MCOU .YF 
DO  t 
02 
0 ’ 
El , 
L 
MIN” 
MCOU -YF 
PO1 
02 03 
I  . 
zl 
1 
0 
0 SET 
0 
1 - 
MST”2  MST”2 MSTW 
0 
:: 
0 
-  0 
0 
~~ 
0  0 
I1 
I  - 
FIGURE 
16-PCBs IN MKSU  (STRATA  XX) 
, 
-ll-  

IN3 IALLAI IUN 
SECTION 100-020-200 
JUNE 1983 
,z u f_” $;C - -- - 7.. ~ TABLE B 
MXPU POSITIONS 
Stations in MSTU Upto 12 13 to 21 
the system equipped CO/PBX lines CO/PBX lines 
& 4 intercoms & 6 intercoms 
10~25 
. lY4 $1 #l, 2 
10 +l #l, 3 #lb4 
10 d-57. 1~6 # 1.3.5 +1~6 
10~65’ l-8 #l, 3, 5, 7 #l-8 
.- 
07.14 Follow the position arrangements in- 
dicated in Figures 15 and 16, and install the re- 
quired MSTU PCBs. 
a) STRATA XII & XX: 
#l MSTU serves stations 10~17 
#2 MSTU serves stations 18%25...

INSTALLATICJN 
SECTION 100-020-200 
JUNE  1983 
MKSU  (STRATA  XII & XX) 
To  CO 
25Pair Cable 
L 
2-Pair 
n 
I  . 
I  . 
Tuner 
External 
MDF 
I- 
1 
2-Pair I 2-Pair  2-Pair 
FIGURE 20-SYSTEM  DIAGRAM 
-14-  

(or equivalent) is 
feature is utilized. required if the music-on-hold 
! 08.10 Main Distribution Frame (MDF) Con- 
figuration 
08.11 Use one split connection block for 
each group of eight stations; 66Ml-50 split 
connection blocks are recommended for use in 
_ the STRATA main distribution frame (MDF). 
08.12 A 25-pair male-amphenol-ended cable 
is connected directly to the front of each MSTU 
I  and fastened with the 
(Figure 21). arovided metal bracket 
CABLE 
CLAMPS 
I 
FIGURE 21-MKSU CABLE CLAMPING...

INSTALLAl IUN 
SECTION 100-020-200 
JUNE 1983 ‘, 
I 
TO MSTU 2-pair JACKETED 
STATION CABLE 
hWJIT 2 
1 
1 CIRCUIT 3 
1 
1 CIRCUIT 4 
-I 
1 CIRCUIT 5 
_I 
1 CIRCUIT 6 
J 
i’ I 
 
, 
MODULAR STATION BLOCK ’ 
 , 
/ 
- 
! 
I NOT USED 5432 
L-J t 
66M150 SPLIT BLOCK 
FIGURE 23-MDFIEKT WIRING 
i