Salim Badakhshan
Registered
MSI MS-95B7 Bezel Cyclops LED connector-262PY Rev A02 Schematic
Technical Specifications
Technical Summary
This Dell PE4600 control panel schematic, document number 136667, revision A02, dated 10/25/02, details the front panel interface board. The board number is 262PY. The primary controller IC is the 5Y977, which functions as both the EC/KBC and audio codec, housed in a SUB*_5Y977 package. Thermal monitoring is handled by an LM75 sensor. The design includes a planar speaker drive circuit using two 7406 outputs and a +12V speaker trace. The schematic notes a critical revision change replacing the 0C068 part with the 5Y977 to resolve a permanent I²C bus lock-up issue with the LM-75 sensor.
Technician FAQ
Q: What is the EC/KBC and audio codec IC used on this Dell PE4600 control panel board?
A: The IC is the 5Y977, housed in a SUB*_5Y977 package. It serves as both the EC/KBC and audio codec.
Q: What thermal sensor is used on this board?
A: The thermal sensor is an LM75, communicating over the I²C bus.
Q: What was the critical revision change from A00 to A02?
A: Revision A02 replaced the 0C068 part with the 5Y977 to fix a permanent I²C bus lock-up issue with the LM-75 sensor that could only be cleared by removing power.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Technical Specifications
| Parameter | Value |
|---|---|
| Brand | Dell |
| Motherboard Manufacturer | Dell Computer Corporation |
| Model | PE4600 |
| Board Number | 262PY |
| Revision | A02 |
| Date | 10/25/02 |
| Document Number | 136667 |
| Drawing Number | SCHEM,CNTL-PNL,PE4600 |
| EC / KBC | 5Y977 |
| EC/KBC Package | SUB*_5Y977 |
| Thermal Sensor | LM75 |
| Audio Codec | 5Y977 |
Technical Summary
This Dell PE4600 control panel schematic, document number 136667, revision A02, dated 10/25/02, details the front panel interface board. The board number is 262PY. The primary controller IC is the 5Y977, which functions as both the EC/KBC and audio codec, housed in a SUB*_5Y977 package. Thermal monitoring is handled by an LM75 sensor. The design includes a planar speaker drive circuit using two 7406 outputs and a +12V speaker trace. The schematic notes a critical revision change replacing the 0C068 part with the 5Y977 to resolve a permanent I²C bus lock-up issue with the LM-75 sensor.
Technician FAQ
Q: What is the EC/KBC and audio codec IC used on this Dell PE4600 control panel board?
A: The IC is the 5Y977, housed in a SUB*_5Y977 package. It serves as both the EC/KBC and audio codec.
Q: What thermal sensor is used on this board?
A: The thermal sensor is an LM75, communicating over the I²C bus.
Q: What was the critical revision change from A00 to A02?
A: Revision A02 replaced the 0C068 part with the 5Y977 to fix a permanent I²C bus lock-up issue with the LM-75 sensor that could only be cleared by removing power.
Technical data structured and organized by Dr-Bios.com, based on original schematic source analysis.
Attachments
Last edited by a moderator: