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Kenwood LZ-7500 Manual

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12 - English
Troubleshooting Guide
What might appear to be a malfunction in your unit may just be the result of slight misoperation or
miswiring. Before calling service, first check the following table for possible problems.
SOLUTIONPOSSIBLE CAUSEPROBLEM
The power does not turn on. The fuse has blown. After checking for short circuits in the cables,
replace the fuse with one having the same rating.
No ACC position on vehicle ignition.
Connect the same cable to the ignition as the
battery cable.
No video picture appears. The unit is not connected to the
parking brake detection switch.
Make proper connections according to
”Connection“.
The parking brake is not engaged.
For safety reasons no video picture are displayed
while the vehicle is moving. Engaging the parking
brake will cause picture to be displayed.
The screen is dark. The unit is in a location where
temperature is low.
If the temperature of the monitor unit drops, the
screen may appear darker when power is first turned
on due to the characteristics of a liquid crystal panel.
Wait a while after turning power on for the
temperature to rise. Normal brightness will return.
Specifications
Specifications subject to change without notice.
Monitor Unit
Screen size ......................................................................................................................6.95 inches wide
154.1(W) x 86.6(H) x 176.7(Diagonal) mm
6-1/16(W) x 3-7/16(H) inches
Display system ..................................................................................................Transparent TN LCD panel
Drive system ......................................................................................................TFT active matrix system
Number of pixels..............................................................................336,960 pixels (480 H x 234 V x RGB)
Effective pixels ..............................................................................................................................99.99%
Pixel arrangement ..............................................................................................RGB striped arrangement
Back lighting ..................................................................................................................Cold cathode tube
Speaker power ....................................................................................................................1 W (40
Ø x 1)
Video Box Unit
Colour system ..........................................................................................................................NTSC/PAL
External video input level (RCA jacks) ............................................................................1 ± 0.1 Vp-p/ 75 Ω
External audio input level (RCA jacks) ........................................................................................1 V/ 22 KΩ
Video output level (RCA jacks)........................................................................................1 ± 0.1 Vp-p/ 75 Ω
Audio output level (RCA jacks) ..............................................................................................500 mV/ 1 KΩ
Analog RGB input ................................................................................................................0.7 Vp-p/ 75 Ω
General
Operating voltage ......................................................................................................14.4 V DC (11 - 16 V)
Consumed Power ..............................................................................................................................14 W
Operational temperature range ..........................................................................................–10°C to +60°C
Storage temperature range ................................................................................................–30°C to +80°C
Size
(Monitor unit) ................................................................................................189(W) x 131(H) x 37(D) mm
7-7/16(W) x 5-3/16(H) x 1-7/16(D) inches
(Video box unit) ..............................................................................................167(W) x 38(H) x 152(D) mm
6-9/16(W) x 1-1/2(H) x 6(D) inches
Mass
(Monitor unit) ....................................................................................................................580 g(1.28 LBS)
(Video box unit)..................................................................................................................620 g(1.37 LBS)
Although the effective pixels for the liquid crystal panel is given as 99.99% or more, 0.01% of pixels may not light or
may light incorrectly.
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