System Board and Riser Board Reference Designators
Designator | Component (Continued) |
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|
U6 | Clock chip |
U7 | 64 bit Bridge |
U10 | LOM1 |
U11 | LOM1 EEPROM |
U12 | LOM1 PHY |
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|
U13 | Audio Codec |
U14 | Audio amplifier |
U16 | LOM2 |
U17 | LOM2 EEPROM |
U18 | LOM2 PHY |
|
|
U19 | SPI ROM |
U20 | Fan controller |
U29 | TMDS controller |
U30 | Parallel port diode array |
U31 | First serial port transceiver |
|
|
U32 | Second serial port transceiver |
U46 | VRM controller |
U50 | USB front port power switch |
U51 | First USB rear port power switch |
U52 | Second USB rear port power switch |
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|
U53 | Third USB rear port power switch |
XBT | Battery retainer |
XMM1 | Memory slot. DIMM1 or RIMM1 populated and tested |
XMM2 - XMM5 | Following memory slots |
XU1 | Primary processor socket |
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|
XU2 | Secondary processor socket |
XU15/U15 | System ROM and Socket (Socket = XU15, ROM = U15) |
XU19/U19 | SPI ROM and socket (XU19 = socket, U19 = SPI ROM) |
Y1 | Primary (TH) system clock crystal |
Y2 | Secondary (SMT) system clock crystal |
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|
Y3 | Primary NIC clock crystal |
Y4 | Secondary NIC clock crystal |
Y5/H5 | RTC clock |
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Service Reference Guide, dc7600 |