Kenwood LZ-7500 instruction manual Troubleshooting Guide, Specifications, Monitor unit

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.

PROBLEM	POSSIBLE CAUSE	SOLUTION
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	Make proper connections according to
	parking brake detection switch.	”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
Mass	6-9/16(W) x 1-1/2(H) x 6(D) inches
(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.

12 - English