Test Mode - Sony MZ-S1 Service Manual

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 two 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.
– MAIN Board (Conductor Side) –
L802
6 194 190 186 182 187 189 193
8 192 209 184 183 185 191 197 195
2 In the normal mode, turn on the
[GROUP/CANCEL]
ing the
t t
N > N >
t t
. N > .
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

SL801
(TEST)
SL801
(TEST)
R822
R824
[HOLD]
switch. While press-
key press the following order:
t t t
. . N >
t t
X X
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
All lit
All off
Microcomputer
version
display
• When the
key is pressed and hold down, the display at that
X
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:
Turn off the power.
MZ-S1
V1.100
15