Cabletron Systems Netlink FRX4000, Maintenance Manual

Page: 29 / 60

Testing & Replacing Components 3-5
3. Check the following:
●
Power Supply:
◆
Measure the AC voltage.
◆
Measure the DC output voltages (+12V, -12V, +5V).
●
Motherboard:
◆
Measure the DC input voltages.
Replacing Memory Modules
Location – see Figure 3-3 (on page 3-2 ). Cabletron part numbers:
DRAM (8 Mb) = 85207015, Flash (4 Mb) = 09-44-15-005.
1. If the cover is not already off, remove it. (See page 3-3 .)
2. Spread the metal spring clips apart and pull the SIMM forward
as shown in the following figure.
Figure 3-6 SIMM
3. Handling the module only by the edges, remove the SIMM from
the slot. Avoid touching any components, and never touch a
gold-plated edge connector. (If you do, clean it with a lint-free
cloth dipped in isopropyl alcohol.)
4. Place the removed module into an anti-static bag. If one is not
handy, set the module aside until after step 5, then use the bag
that contained the replacement module.
Spring Clip
Spring Clip