Apple MC408LL Apple Technician Guide - Page 30

No Video, Quick Check, Deep Dive: No Video

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No Video Unlikely cause: hard drive, optical drive, speakers Quick Check Symptoms No Video • No image. Quick Check 1. Inquire which video port and cable is used by customer. 2. Check connectors and cables for pin damage. 3. Check both computer DisplayPort and HDMI connections with known-good displays. 4. (DisplayPort) If DisplayPort to DVI adapter cable is used in customer's configuration, check it on a known-good computer 5. (HDMI) If issue only happens on customer's HDMI display, make sure that he selected the correct AV input, that he connected directly the computer to display and that he is using known-good HDMI cable. 6. Reset SMC. 7. 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 supported external display via mini DisplayPort. Verify whether image appears correctly on external display when system is booted. Result 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. Code 2010-08-03 Mac mini (Mid 2010) Symptom Charts - Startup and Power 30

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Mac mini (Mid 2010) Symptom Charts — Startup and Power
30
2010-08-03
No Video
Unlikely cause:
hard drive, optical drive, speakers
Quick Check
Symptoms
Quick Check
No Video
•
No image.
1.
Inquire which video port and cable is used by
customer.
2.
Check connectors and cables for pin damage.
3.
Check both computer DisplayPort and HDMI
connections with known-good displays.
4.
(DisplayPort) If DisplayPort to DVI adapter cable
is used in customer’s configuration, check it on a
known-good computer
5.
(HDMI) If issue only happens on customer’s HDMI
display, make sure that he selected the correct AV
input, that he connected directly the computer to
display and that he is using known-good HDMI
cable.
6.
Reset SMC.
7.
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
supported external display via
mini DisplayPort. Verify whether
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.