Apple MC408LL Apple Technician Guide - Page 47

Display, No Video

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2010-08-03 Display No Video Unlikely cause: hard drive, optical drive, speakers Quick Check Symptoms No Video • No image. Quick Check 1. Check display DisplayPort or HDMI connections 2. Connect known-good display and cables, 3. For HDMI display, power on the display first and set AV input to HDMI, then power on the Mac mini. 4. Check that customer display is directly connected to computer with known-good cables. 5. Check connections for pin damage. 6. Reset PRAM. 7. Reset SMC. 8. Go to Deep Dive. Deep Dive: No Video Check 1. Verify boot chime present and fans running when system powered ON. (Reset SMC and clear PRAM if necessary for proper boot up.) 2. (DisplayPort) Connect knowngood external display via Mini DisplayPort. Verify if image appears correctly on external display when system is booted. 3. (HDMI) Connect known-good external display via HDMI port. Select correct HDMI input on display and verify if image appears correctly on external display when system is booted. Result Yes No Yes No Yes No Action Power ON self test OK. Boot sequence started. Go to step 2. Go to Won't Start Up symptom flow. Video present. Verify system functionality and return to user or jump to appropriate display troubleshooting flow. Go to step 3. Video circuitry on logic board functional. Return to customer or jump to appropriate display issue troubleshooting flow. Go to step 4 Code Mac mini (Mid 2010) Symptom Charts - Display 47

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Mac mini (Mid 2010) Symptom Charts — Display
47
2010-08-03
Display
No Video
Unlikely cause:
hard drive, optical drive, speakers
Quick Check
Symptoms
Quick Check
No Video
•
No image.
1.
Check display DisplayPort or HDMI connections
2.
Connect known-good display and cables,
3.
For HDMI display, power on the display first and
set AV input to HDMI, then power on the Mac
mini.
4.
Check that customer display is directly connected
to computer with known-good cables.
5.
Check connections for pin damage.
6.
Reset PRAM.
7.
Reset SMC.
8.
Go to Deep Dive.
Deep Dive: No Video
Check
Result
Action
Code
1.
Verify boot chime present and
fans running when system
powered ON. (Reset SMC and
clear PRAM if necessary for
proper boot up.)
Yes
Power ON self test OK. Boot
sequence started.
Go to step 2.
No
Go to
Won’t Start Up
symptom flow.
2.
(DisplayPort) Connect known-
good external display via Mini
DisplayPort. Verify if image
appears correctly on external
display when system is booted.
Yes
Video present. Verify system
functionality and return to
user or jump to appropriate
display troubleshooting flow.
No
Go to step 3.
3.
(HDMI) Connect known-good
external display via HDMI port.
Select correct HDMI input on
display and verify if image
appears correctly on external
display when system is booted.
Yes
Video circuitry on logic
board functional. Return
to customer or jump to
appropriate display issue
troubleshooting flow.
No
Go to step 4