Service manual

Chapter 1 Product Description 1-5
■ 10-Megabits-per-second (Mbps)/100-Mbps twisted-pair Ethernet (TPE)
networking
■ 100-Mbps Media-Independent Interface (MII) networking
■ Four IEEE 1496-compliant 25-MHz SBus I/O slots
■ Two DB25-type standard connector serial ports
Note – Each serial port supports synchronous and asynchronous communication.
■ DB25-type connector parallel port (Centronics compatible)
■ Standard Sunness
Note – Standard Sunness includes the time of day (TOD)/nonvolatile
random-access memory (NVRAM), and boot programmable read-only memory
(PROM) or FlashPROM for Power-On Self-Test/OpenBoot PROM (POST/OBP)
■ Built-in speaker
■ Diagnostic LED
■ Power conservation support
1.4 System Unit Components
System unit components are listed in the following table. FIGURE 1-3 illustrates the
system unit interior.
FIGURE 1-4 illustrates the system unit rear panel.
Note – Consult your authorized Sun sales representative or service provider prior to
ordering a replacement part.
TABLE 1-2 System Unit Replaceable Components
Component Description Model
Motherboard Motherboard All
CPU module 167-MHz CPU module (UltraSPARC-I),
512-Kbyte external cache
Model 2170 only
CPU module 200-MHz CPU module (UltraSPARC-I),
1-Mbyte external cache
Models 1200 and 2200
only