Caple C871i Uživatelský manuál stáhnout pdf (Strana 57)

100

101

Apple II Computer Info

reboot." Allow 5-10 seconds for power unit to

warm up; get basic prompt ], then do "PR#n"

with n being the slot number of your launching

disk drive. Typically this is PR#7 or PR#6.

ARE INTERFACE CARDS 1. Remove all interface cards, and boot-up the

INCOMPATIBLE WITH computer. If boot succeeds, then add

interface

POWER SUPPLY UNIT? cards one at a time, booting up. Fussy

interface

card will make computer crash. This procedure

identifies any problem interface card.

MEASURED VOLTAGES SEEM 1. Orange +5v, yellow +12v, green -12v, blue -5v.

TOO LOW. As a safety feature, the output voltages are

normally LESS than these values when measured

without full load attached. When connected to

computer motherboard load, voltages will reach

their expected target values.

HOLES IN BACK OF IIGS 1. Note that there are two holes at rear of CPU

CASE ARE TOO SMALL case behind location of internal power supply.

TO THREAD CABLE TO Use thin-nose pliers to remove small amount of

MOTHERBOARD CONNECTOR; thin plastic around the larger (rectangular).

MOLEX-7 PLUG IS TOO BIG. hole. Then Molex-7 plug and cable will pass

through.

CLEAR SILICON CAULK 1. Clear silicon caulk was added to reduce strain

ON IIGS OR IIE CABLE on individual wires. IT IS FLEXIBLE. Slowly

PLUG SEEMS TOO STIFF bend the power cable after threading it into

TO MAKE RIGHT-ANGLE the CPU case; it will fit successfully on the

BEND TO CONNECT TO motherboard male connector.

MOTHERBOARD.

CABLE MOLEX-7 PLUG 1. Shine bright light into CPU. Be sure that

WON'T MATE WITH MALE Molex-7 plug is correctly centered on mother-

MOTHERBOARD CONNECTOR. . The polarizing-key in plug's third hole

prevents Molex-7 plug from being inserted

off-center. Polarizing-ramp on IIgs plug must face the slots. With IIe

version, the AMP-6 plug's two black wires must be positioned closest to

the keyboard

(front) side of the CPU.

COOLING FAN IS NOISY. 1. This is a normal feature of IBM-style power

units. Some sound like vacuum cleaners'

cousins!

Take advantage of the 5 ft cable to position

the

unit under your computer table, away from

ears.

2. If sound suggests that an object has fallen

into

the unit through a fan opening, SHUT OFF the

unit

immediately and shake unit so object will fall

out. Disconnect AC power, open unit, remove

item.

3. Most units generate no heat when used with

Apples, so the fan speed can be slowed with

Apple II Computer Technical Information : Apple II Family Hardware Info

ftp://ground.ecn.uiowa.edu/2/apple2/miscinfo/hardware : May 2001 : 57 of 572

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