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MZ-N505
OPERATION IN SETTING THE TEST MODE
• When the test mode becomes active, first the display check mode
is selected.
• Other mode can be selected from the display check mode.
• When the test mode is set, the LCD repeats the following dis-
play.
Set LCD display
• When the X key is pressed and hold down, the display at that
time is held so that display can be checked.
RELEASING THE TEST MODE
For test mode set with the method 1:
Turn off the power and open the solder bridge on SL801 (TEST)
on the MAIN board.
Note: Remove the solders completely. Remaining could be shorted with
the chassis, etc.
For test mode set with the method 2 or 3:
Turn off the power.
V1.100
All lit
All off
Microcomputer
version
display
R
827
C839
R817
C814
FB801
R821
R823
R824
R858
R825
C822
C816
R822
R857
C817
C809
+
C815
+
C821
+
195
199
178
174
170
203
180
176
172
175
171
169
197
193
191
189
185
187
173
179
177
183
182
207
181
184
186
215
188
209
190
211
213
192
194
1
7
0
4
9
8
9
6
SL801
(TEST)
C625
SL801
(TEST)
– MAIN Board (Conductor Side) –
2 In the normal mode, turn on the [HOLD] switch. While press-
ing the [VOL --] key press the following order:
> t > t . t . t > t
. t > t . t X t X
3 In the normal mode, turn on the [HOLD] switch. While
pressing the x key, press the keys on the remote com-
mander with the following order:
> t > t . t . t > t . t
> t . t X t X
Note: If electrical adjustment (CD and MO overall adjustment) has not
been finished completely, “NV Error” is displayed on LCDs of the
set and the remote commander.
SECTION 4
TEST MODE
OUTLINE
• This set provides the Overall adjustment mode that allows CD
and MO discs to be automatically adjusted when in the test mode.
In this overall adjustment mode, the disc is discriminate between
CD and MO, and each adjustment is automatically executed in
order. If a fault is found, the system displays its location. Also,
the manual mode allows each individual adjustment to be auto-
matically adjusted.
• Operation in the test mode is performed with the set. A key
having no particular description in the text, indicates a set key.
SETTING METHOD OF TEST MODE
There are three different methods to set the test mode:
1 Short SL801 (TEST) on the MAIN board with a solder bridge
(connect pin <zvn of IC801 to the ground). Then, turn on the power.