Acer Extensa 365 Service Guide

Disassembly and Unit Replacement 3-21
3.7  Disassembling the Display
Follow these steps to disassemble the display:
1. Remove the two oval LCD bumpers at the top of the display; use a pointed instrument to
remove the two mylar stickers on the bottom of the display.
Figure 3-28 Removing the LCD Bumpers
2. Remove four screws on the display bezel.
Figure 3-29 Removing the Display Bezel Screws
STN and TFT LCDs use the same bezel but different panels. 

3-22Service Guide
3. Pull out and remove the display bezel by first pulling on the inside of the bezel sides and lower
bezel area.  Then pull up the top bezel area.
Figure 3-30 Removing the Display Bezel
4. Unplug two connectors and remove the inverter board.
Figure 3-31 Removing the Inverter Board 

Disassembly and Unit Replacement 3-23
5. Remove three screws on the four sides of the display panel (one screw holds and grounds the
LCD cable).  Then tilt the LCD Panel away for the display cover.
Figure 3-32 Removing the LCD Panel
6.  Detached the Display cable from the LCD Panel.
Figure 3-33 Removing the display cable from LCD Panel 

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Model Number Definition
Model Number Definition A-1
This appendix shows the model number definition of the notebook.
36 X X
                    LCD:                           
                    D:   12.1” DSTN
                    T:   12.1”   TFT
                    CPU, Memory, HDD, FDD/CD-ROM, Battery:
                    5:  P55C-166, 16MB, 2.1G,  Internal FDD, NiMH Battery
                    6:  P55C-166, 16MB, 2.1G,  External FDD, 20x...

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Compatibility Test Report Excerpt
This paragraph will usually be inserted into the Service Guide in the following weeks.  Please check
the http://ipg.intranet.acer.com.tw (Customer Services on the website) to find out when this
information  is available. 

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BIOS POST Checkpoints
BIOS POST Checkpoints C-1
This appendix lists the POST checkpoints of the notebook BIOS.
Table C-1 POST Checkpoint List
CheckpointDescription
04h
· Dispatch Shutdown Path
Note:At the beginning of POST, port 64 bit 2 (8042 system flag) is read to determine
whether this POST is caused by a cold or warm boot.  If it is a cold boot, a
complete POST is performed.  If it is a warm boot, the chip initialization and
memory test is...

C-2Service Guide
Table C-1 POST Checkpoint List
CheckpointDescription
24h
· PIC(8259) testing & initialization
30h
· System Shadow RAM
34h
· DRAM sizing
3Ch
· Initialize interrupt vectors
4Bh
· Identify CPU brand and type
35h
· PCI pass 0
40h
· Assign I/O if device request
41h
· Assign Memory if device requested
44h
· Assign IRQ if device request
45h
· Enable command byte if device is OK
50h
· Initialize Video display
52h
· Download keyboard matrix
4Ch
· ChipUp initialization for CPU clock checking
54h
·...

BIOS POST Checkpoints C-3
Table C-1 POST Checkpoint List
CheckpointDescription
6Ch
· FDD testing & parameter table setup
Note:The FDD LED should flash once and its head should be positioned
88h
· HDD testing & parameter table setup
89h
· Get CPU MUX
Note:This routine is to identify the user-set CPU frequency, not CPU-required frequency
90h
· Display POST status if necessary
93h
· Rehook int1c for quiet boot
94h
· Initialize I/O ROM
A4h
· Initialize security feature
A8h
· Setup SMI parameters
A0h
·...

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Silk Screen
Silk ScreenD-1
1.1  CPU Board Layout
For the mainboard layout, please refer to the next page.  The following table is a reference when
mounting1 the CPU.
CPU Mounting Reference Table
Volt. Ext Freq Ratio
CPU Volt Freq R4 R6 R8 R11 R20 R22 R24 R26 RX14 RY1 RX6 RX9 RX11 RX12 UX2 UX3
P55C-133MHz 2.5V 133=66x2 V X VXVXXVV XV X X X XX
P55C-150MHz 2.5V 150=60x2.5 V X VVXXVVV XV X X X XX
P55C-166MHz 2.5V 166=66x2.5 V X VXXXVVV XV X X X XX...

Silk ScreenD-2
PCB No. 96532-SA CPU Board Layout (Bottom)