Switches And Indicators - NEC D2246 Maintenance Manual

8-inch winchester disk drive
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ROUTE 0
(CHANNEL 1)
DUAL PORT
OPTION
ROUTE 1
(CHANNEL 11)
A
80
P1
P2
PORTA
DRIVEO
A
80
CONTROL UNIT A
81
P1
P2
PORTA
DRIVE 1
81
82
P1
P2
PORTA
DRIVE 2
82
CONTROL UNIT 8 (DUAL PORT ONLY)
83
P1
P2
PORTA
DRIVE 3
83
Figure 8-1 Dual-Port System Cabling
8.2 SWITCHES AND INDICATORS
Three switches and four LED indicators located on the interface G9QSW PCB control
its functions and provide status information. These switches and indicators are shown in
Figure 8-2.
RELEASE TIMER
OFF-ON
ROUTE 1
(PORT 8)
SWITCH
LED
D-E
RSVSEL
ROUTE 0
(PORT A)
SWITCH
LED
D-E
RSVSEL
II @IIOO II
@
1100
Figure 8-2 Dual-Port Control Switches and Indicators
8-2
(

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