2004 INFINITI QX56 Factory Service Manual

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INFINITI QX56 2004 Factory Service Manual AV-54
DVD ENTERTAINMENT SYSTEM
Revision: August 20072004 QX56
SchematicEKS007LC
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INFINITI QX56 2004 Factory Service Manual DVD ENTERTAINMENT SYSTEM
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Wiring Diagram — DVD —EKS007LD
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INFINITI QX56 2004 Factory Service Manual AV-56
DVD ENTERTAINMENT SYSTEM
Revision: August 20072004 QX56
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INFINITI QX56 2004 Factory Service Manual DVD ENTERTAINMENT SYSTEM
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INFINITI QX56 2004 Factory Service Manual AV-58
DVD ENTERTAINMENT SYSTEM
Revision: August 20072004 QX56
Trouble DiagnosisEKS007LE
Symptom Possible causes Repair order
DVD player inoperative1. Power supply
2. Ground circuit
3. Audio enable cir

AV-58
DVD ENTERTAINMENT SYSTEM
Revision: August 20072004 QX56
Trouble DiagnosisEKS007LE
Symptom Possible causes Repair order
DVD player inoperative1. Power supply
2. Ground circuit
3. Audio enable circuit
4. DVD enable signal
5. Audio enable signal
6. DVD player
7. Audio unit1. Refer to AV- 5 9 , "
Power Supply Circuit Inspection" .
2. Refer to AV- 5 9 , "
Power Supply Circuit Inspection" .
3. Check audio enable circuits for open or short between
audio unit terminals 39, 40 and DVD player terminals
11 , 9 .
4. Push power switch of DVD player and verify approx.
5V is present at terminal 39 of audio unit.
5. Push power switch of DVD player and verify approx.
5V is present at terminal 9 of DVD player.
6. Remove DVD player for repair.
7. Remove audio unit for repair.
No sound when playing
DVD1. Audio signal circuits
2. DVD player
3. Audio unit1. Check audio signal circuits for open or short between
DVD player terminals 1, 2, 3 and 4 and audio unit ter-
minals 34, 35, 36 and 37.
2. Remove DVD player for repair.
3. Remove audio unit for repair.
Video monitor is inopera-
tive/does not operate prop-
erly1. Power supply
2. Video monitor ground circuit
3. Video circuits
4. Data signal
5. Video monitor
6. DVD player1. Operate DVD player and verify battery positive voltage
is present at terminals 11 and 12 of video monitor. Ver-
ify approximately 5 volts is present at terminal 10 of
video monitor.
2. Check video monitor ground circuits between DVD
player terminals 19 and 27 and video monitor terminals
1 and 2.
3. Check video circuits between DVD player terminals 23
and 24 and video monitor terminals 7 and 8.
4. Check data signal circuit for open or short between
DVD player terminal 29 and video monitor terminal 5.
5. Remove video monitor for repair.
6. Remove DVD player for repair.
DVD remote control is
inoperative/does not oper-
ate properly1. Data signal
2. DVD player remote control batteries
3. DVD player remote control
4. Video monitor1. Check data signal circuit for open or short between
DVD player terminal 28 and video monitor terminal 6.
2. Replace DVD player remote control batteries.
3. Replace DVD player remote control.
4. Remove video monitor for repair.
Headphones inoperative 1. Headphone batteries
2. Headphones
3. Rear audio remote control unit1. Replace headphone batteries.
2. Replace headphones.
3. Replace rear audio remote control unit.
Snowy video/poor audio 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
Snowy video (audio OK) 1. Harness or connectors
2. DVD player1. Check harness and connectors for open or short.
2. Check DVD player.
No video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.
Dim video (audio OK) 1. Harness or connectors
2. DVD player
3. Video monitor1. Check harness and connectors for open or short.
2. Check DVD player.
3. Check video monitor.

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INFINITI QX56 2004 Factory Service Manual DVD ENTERTAINMENT SYSTEM
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Power Supply Circuit InspectionEKS007LF
1. CHECK FUSES
Check that the following fuses are not blown.
OK or NG
O

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INFINITI QX56 2004 Factory Service Manual AV-60
DVD ENTERTAINMENT SYSTEM
Revision: August 20072004 QX56
2. Remove the screws and DVD player.
3. Installation is in reverse order of removal.
Removal and Installation of Video MonitorEKS007LH
1.

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INFINITI QX56 2004 Factory Service Manual NAVIGATION SYSTEM
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NAVIGATION SYSTEMPFP:25915
System DescriptionEKS007LI
The navigation system periodically calculates the vehicles curre

NAVIGATION SYSTEM
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NAVIGATION SYSTEMPFP:25915
System DescriptionEKS007LI
The navigation system periodically calculates the vehicle's current
position according to the following three signals: Travel distance of
the vehicle as determined by the vehicle speed sensor, turning angle
of the vehicle as determined by the gyroscope (angular velocity sen-
sor), and the direction of vehicle travel as determined by the GPS
antenna (GPS information).
The current position of the vehicle is then identified by comparing the
calculated vehicle position with map data read from the map DVD-
ROM, which is stored in the DVD-ROM drive (map-matching), and
indicated on the screen with a current-location mark.
By comparing the vehicle position detection results found by the
GPS and by map-matching, more accurate vehicle position data can
be used.
The current vehicle position will be calculated by detecting the dis-
tance the vehicle moved from the previous calculation point and its
direction.
TRAVEL DISTANCE
Travel distance calculations are based on the vehicle speed sensor input signal. Therefore, the calculation
may become incorrect as the tires wear down. To prevent this, an automatic distance fine adjustment function
has been adopted. Adjustments can be made in extreme cases (such as driving with tire chain fitted on tires).
Refer to AV-107, "
Confirmation/Adjustment Mode" .
TRAVEL DIRECTION
Change in the travel direction of the vehicle is calculated by a gyroscope (angular velocity sensor) and a GPS
antenna (GPS information). As the gyroscope and GPS antenna have both merit and demerit, input signals
from them are prioritized in each situation. However, this order of priority may change in accordance with more
detailed travel conditions so that the travel direction is detected more accurately.
MAP-MATCHING
Map-matching is a function that repositions the vehicle on the road
map when a new location is judged to be the most accurate. This is
done by comparing the current vehicle position, calculated by the
method described in the position detection principle, with the road
map data around the vehicle, read from the map DVD-ROM stored in
the DVD-ROM drive.
Therefore, the vehicle position may not be corrected after the vehicle
is driven over a certain distance or time in which GPS information is
hard to receive. In this case, the current-location mark on the display
must be corrected manually.
CAUTION:
The road map data is based on data stored in the map DVD-
ROM.
WKIA1371E
SEL684V
Type Advantage Disadvantage
Gyroscope (angular velocity sensor)
Can detect the vehicle's turning angle
quite accurately.Direction errors may accumulate when the
vehicle is driven for long distances without
stopping.
GPS antenna (GPS information)
Can detect the vehicle's travel direction
(North/South/East/West).Correct direction cannot be detected when
the vehicle speed is low.
SEL685V

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