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MZ-B100
2 In the normal mode, turn on the HOLD switch on the set. While
pressing the N key on the set, press the following set keys
in the following order:
> t > t . t . t > t . t
> t . t X t X
[Operation in Setting the Test Mode]
• When the test mode becomes active, first the display check mode
is selected. (Press x key once, when the display check mode
is not active.)
• Other mode can be selected from the display check mode.
• When the test mode is set, the LCD repeats the following dis-
play.
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:
Turn off the power.
Note: If electrical adjustment (see page 19) has not been finished com-
pletely, always start in the test mode. (The set cannot start in nor-
mal mode.)
SECTION 4
TEST MODE
[Outline]
• This set provides the Overall adjustment mode (Assy mode) that
allows CD and MO disc to be automatically adjusted when in
the test mode. In this overall adjustment mode, the protect switch
is detected to judge the disc, CD or 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 indi-
vidual adjustment to be automatically adjusted.
• The keys in the description refer to the keys on both set and
remote commander unless otherwise specified.
[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 202 of IC801 to the ground). Then, turn on the
power.
4440
*
IC801
1
4
8
5
IC804
C808
C806
R803
R830
R821
R817
R801
R819
R820
R825
R827
R829
R802
C823
R828
R811
R810
R804
R812
C805
C817
C818
C517
C518
C816
C821
X801
SL801(TEST)
OPEN: NORMAL MODE
SHORT: TEST MODE
SL801
SHORT: TEST MODE
OPEN: NORMAL MODE
MAIN BOARD (SIDE A)
Microprocessor
version
display
All off
All lit
V0.000