Toshiba Strata DK Backup - Manual (Page 161)

–––––––––––––––––––––––––––––––––––––––––––––––––– Upgrading Strata DK Systems to DK424 Release 4.0
151 Upgrading Strata DK Systems to DK424 Release 4.0
Upgrading Strata DK Systems to DK424 Release 4.0
1. Power down the system before removing and installing the processor card(s). Figure 25
shows the slot placement of the processor cards.
2. Remove only the RCTUA, RCTUBB, RCTUD, or RCTUF.
3. Remove the MOH connection, if required.
4. Remove the RRCS DTMF PCB on the RCTU card, if equipped (see Figures 26 ~ 29 ).
RCTUBB,
RCTUA,
or RCTUD
RCTUD only
To RSIU if installed
RCTUBA
or
RCTUC
Slot R11 Slot RCTU (Base Cabinet)
P3
P2
P11
P2
Heartbeat LED
1394
RCTUF
To RSIU if installed
RCTUE
Slot R11 Slot RCTU (Base Cabinet)
P3
P2
P11
P2
Heartbeat LED
1924
Figure 25 RRCU Removal and Component Placement
Backplane Connector
P5 P4
BATT
ON
OFF
P3 P2
P11
VR1
CBRUK
IC12
Feature Upgrade
Connectors
(not used)
RRCS
Connectors
RRCS
Connectors
U3
Heartbeat LED
P1
Tone
ROM
IC16 IC15
Program
ROMs
IC15, 16, 17,
and 18
BGM and MOH
Interface
(RCA Jack)
RKYS
Key Socket
Install in “RCTU” Slot
BGM/MOH Volume Control
To RSIU
P12
RAA4-6 RAA4-5
IC18 IC17
RAA4-8 RAA4-7
1366
RCTUA4
Software
Version
R4 =
Upgrade Label RCTUA4
Figure 26 RCTUA Printer Circuit