Land Rover Discovery Lhd Models Etm 1995 4th Edition Exp Rover Manual

							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E7
Radio (NAS)
7
DISCOVERY
+
±
Z175
Radio Amplifier
17
1.0 BN
K145
Right Rear
Speaker
+
±K143
Left Rear
Speaker
7
1.0 BW18
1.0 BO
1
8
1.0 BY
215
1.0 BU
10
5
1.0 BG
3
C212 C2054
1 C428
1 C427
1 C429
1 C430
1.0 BW1.0 B
+
±K142
Left Front
Speaker
1 C518
1 C515
16
1.0 BR
6
1.0 BK
1.0 B
+
±K144
Right Front
Speaker
1 C618
1 C615
1.0 BW
12C5101
2C610 
						

							ELECTRICAL TROUBLESHOOTING MANUA L
E7 ETM
Radio (NAS)
8
DISCOVERY
R
F 3
10 A
5 C437
P126
Fascia Fuse Box
See Fuse Details
1 C229
0.5 LGO
45
Z175
Radio Amplifier
10
1.0 B
13
S2024
12C2054
32
Z176
Subwoofer
Amplifier
6
E401
See Ground Dis-
tribution
C413
+
±+
±
0.5 B
C412 1 C277
1.0 LGO
0.5 PY
BE7-2
E205
1 7
56C212
312C437
C412
S418
Z199
Subwoofer
Amplifier Shield
See Ground Dis-
tribution
0.5 R
0.5 B
K146
Subwoofer 0.5
B
4 
						

							RADIO (NAS)
9
ETM E7
DISCOVERY
ELECTRICAL TROUBLESHOOTING MANUAL
TROUBLESHOOTING HINTS
12. Check fuses F6 of Satellite Fusebox 2 (P128)
and F3 of Fascia Fusebox (P126).
13. Check that Radio (Z111) connectors and
coaxial cable are tight and properly connected.
14. For proper Radio (Z111) noise diagnosis, take
the vehicle outside where signals are strong.
Close the hood and keep away from metal
buildings or other sources of Radio interference.
15. If Radio (Z111) noise is excessive when an
accessory is on, install a Radio noise
suppression capacitor to the power lead of that
accessory.
16. If Radio (Z111) noise is excessive at all times,
check antenna wiring.  If OK, check spark
plugs, spark plug wiring and wiring close to the
ignition system which could transmit noise to
the Radio (Z111) wiring.
17. If only the CD Changer does not operate,
check power, ground, and DIN Cable. If OK,
check Radio and CD Changer.
18. If the Radio (Z111) is inoperative and `code is
being shown on the display, follow the
instructions below.
19. If Radio scans past all frequencies when in
seek mode and hiss is present over most
stations, substitute antenna with a known good
antenna. If the reception is still inadequate,
replace Radio.
Security Code Instructions
1. Obtain 5±digit security code from vehicle owner
or manufacturer.
2. Enter the code number using the Radio (Z111)
push±button selectors.
NOTE:  If the correct code is not entered in 3
successive attempts, the Radio (Z111) will not
accept another entry until the Radio has been left
on for 1 hour with the ignition on.
NOTE:  When entering the code, be sure to
complete the sequence numbering of that 5±digit
code even if you made a mistake.  For example, if
the correct code number sequence is 43215 and
you mistakenly enter 42 instead of 43, continue the
code number sequence of 215 to complete that
entry.  A `beep will sound, `code will still be
displayed and the Radio will not operate.  Re±enter
the correct code 43215 and the Radio will operate.NOTE:  If an audible `beep is heard while entering
the code, STOP immediately.  Begin entering the
code again, starting with the first number of the
5±digit code.
NOTE:  If a push±button is touched accidentally
when the ignition is off, a warning tone will sound.
Turn the ignition on and the tone will stop. 
						

							RADIO (NAS)
10
E7 ETM
DISCOVERY
ELECTRICAL TROUBLESHOOTING MANUA L


 	


1. If the Radio (Z111) does not operate at all, do
Test A.
2. If VF display does not dim when head lamps or
park lamps are turned on, do Test B.
3. If one or more speakers do not operate, do
Test C.
4. If the Radio (Z111) appears to operate properly,
but the Subwoofer (K146) and/or none of the
Speakers operate, do Test D.
5. If the Subwoofer (K146) does not operate, do
Test E.
6. If none of the Remote Radio Waveband, Tune,
Volume Up, or Volume Down Switches operate
for the Mid Line Radio, do Test J.
7. If the Radio Waveband Switch (X234) does not
operate, do Test F.
8. If the Radio Tune Switch (X233) does not
operate, do Test G.
9. If the Radio Volume Up Switch (X235) does not
operate, do Test H.
10. If the Radio Volume Down Switch (X236) does
not operate, do Test I. 
						

								  #
ELECTRICAL TROUBLESHOOTING MANUAL
ETM E7
Radio (NAS)
11
DISCOVERY


	 
 

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							ELECTRICAL TROUBLESHOOTING MANUA L
E7 ETM
Radio (NAS)
12
DISCOVERY

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							ELECTRICAL TROUBLESHOOTING MANUAL
ETM E7
Radio (NAS)
13
DISCOVERY
 
 
 	



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							ELECTRICAL TROUBLESHOOTING MANUA L
E7 ETM
Radio (NAS)
14
DISCOVERY



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ELECTRICAL TROUBLESHOOTING MANUAL
ETM E7
Radio (NAS)
15
DISCOVERY



	
	
	 
 

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							ELECTRICAL TROUBLESHOOTING MANUA L
E7 ETM
Radio (NAS)
16
DISCOVERY


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