Service manual

Page 10 AM-6060 Service Manual
Rev. A00
The AM-966-10 board uses the following connections and jumpers:
Location Description Wire Order*
J1 26-pin cable to AM-301-10. Notice pin 1
orientation on Figure 8.
JP1 Connects to Turbo switch. Black-yellow-white
JP2 Connects to Reset switch. Green-black or black-green
JP3 In an AM-6060, this jumper must be on the
upper two pins (those closest to J1).
JP4 To speaker and front panel power. Red-black
JP5 Connects to system activity (Turbo) light.
Place connector on left two pins (white goes
on center pin).
Yellow-white
JP6 Connects to disk activity (H.D.D.) light.
Place connector on left two pins (white goes
on center pin).
Red-white
* Wires should be in this order, from top to bottom or left to right, depending on jumper
orientation. In some cases, wires may be reversed; if connection doesn’t work in this orientation,
try reversing the connector.
If all front panel lights stop working, check the JP4 connection first. If it is loose, none of the
lights will work.
UPGRADING AM-6060 ON-BOARD MEMORY
The AM-176 has four on-board SIMM (single inline memory module) expansion slots, which support
60ns DRAMs. It also has one on-board cache SIMM. Should you want to replace or upgrade any of these
SIMMs, first remove the existing SIMMs, then install new ones, following the procedures below.
If you change the amount of memory in your AM-6060, you must also reset the JP4 jumpers
(memory size select) according to the settings later in this chapter.
Removing Memory SIMMs
To remove a SIMM from its connector:
1. Power down the computer.
2. Remove the computer’s cover.
3. Press out on the retainer clips and gently tilt the top of the SIMM module, so it is free of the
retainer clips.
4. Lift the SIMM out of the connector.