Test Mode - Sony MZ-NF810CK 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 discriminated be-
tween CD and MO, and each adjustment is automatically ex-
ecuted in order. If a fault is found, the system displays its loca-
tion. Also, the manual mode allows each individual adjustment
to be automatically adjusted.
• Operation in the test mode is performed with the set. A key
having no particular description in the text, indicates a set key.
• For the LCD display, the LCD on the remote commander is
shown, but the contents of LCD display on the set are same.
Setting Method of Test Mode
There are three different methods to set the test mode:
1 Short SL803 (TEST) on the MAIN board with a solder bridge
(connect pin <zx. of IC801 to the ground) and turn on the power.
– MAIN Board (Side B) –
2 In the normal mode, turn on the
[GROUP]
ing the key press the following order:
> > .
t t t
t t T
. > .
t t t
T t T
3 In the normal mode, turn on the
While pressing the xCANCEL/CHG
the keys on the remote commander with the following order:
t t
N > N >
t t
. N > .
Note: If electrical adjustment (CD and MO overall adjustment) has not
been finished completely, "ERROR" is displayed on LCDs of the
set and the remote commander.
SECTION 4

TEST MODE

SL803
(TEST)
[HOLD]
switch. While press-
. >
t t
T t
t
X X
[HOLD]
switch on the set.
key on the set, press
t t t
. . N >
t t
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.
Remote commander LCD display
All lit
All off
Microcomputer
version
006
V 1 . 5 0 0
display
Set LCD display
All lit
All off
00 6
Microcomputer
version
V e r 1 . 5 0 0
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 SL803 (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.
MZ-NF810/NF810CK
13