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10
NW-MS6
SECTION 4
TEST MODE
[Preparation]
Checking consumed electric current is one of the items to check. Connect an ammeter before setting the test mode.
(Refer to the following figure)
[Setting the Test Mode]
There are following two methods of entering the test mode.
Method 1:
Short the short lands (SL0120) on the MAIN board with a solder bridge, then turn on the power.
Method 2:
Turn on the power with the [HOLD] switch OFF. If the set is left as it is, the LCD display becomes on, and after for a while, it changes into
the sleep status (LCD off). Before the status of the display changes into the sleep status, turn ON the [HOLD] switch and press Hs t
[MEGA BASS] t Hs t [VOLUME--] t Hs t [VOLUME+] keys in this order.
[Releasing the Test Mode]
There are following two methods of releasing the test mode.
In case of enter the test mode with the method 1:
Turn off the power and open the solder bridge on the short lands (SL0120) on the MAIN board.
In case of enter the test mode with the method 2:
Turn off the power.
R
6901 R6902
C8004 C8509 R6903
R5001R5003
C8008
R6018
R6027
R6028
R6035
R6037
C8016
C8014
C
R5002
R9015 C9007
R8103
R9019 R8102
R8607
R8104
R8608
R8105
R8110C8006
1
L9007
IC8000
IC5000
X8000
5643
SL0120
120 119 117 113 109 108 105 102 99 96 93
1 118 116 114 110 107 104 101 98 95 92
3 2 115 112 111 116 103 100 97 94 91
564 82
987 79
12 11 10 76
15 14 13 73
18 17 16 70
20 21 19 67
24 23 22 66
25 26 27 34 37 40 43 46 49 52 61
24 28 32 35 38 41 45 47 50 53 55
30 31 33 36 39 42 44 48 51 54 56
17 25 33 41
18 26 34 42
19 27 35 43
20 28 36 44
21 29 37 45
22 30 38 46
23 31 39 47
24 32 40 48
– MAIN BOARD (Conductor Side) –
battery terminal (+)
battery terminal
(–)
SL0120
+
–
ammeter
1.23Vdc
+
–
regulated dc
power supply