Sony MZ-NF810CK Service Manual - Page 13

Ver 1.500

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SECTION 4 TEST MODE MZ-NF810/NF810CK 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 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 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. 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 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 t t > t t . T t . T t > t t . T t > t t . T t X t X 3 In the normal mode, turn on the [HOLD] switch on the set. While pressing the xCANCEL/CHG key on the set, press the keys on the remote commander with the following order: N> t N> t . t . t N> t . t N> t . t t 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. • 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 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. 13

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13
MZ-NF810/NF810CK
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.
•
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 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.
2
In the normal mode, turn on the
[HOLD]
switch. While press-
ing the
[GROUP]
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 on the set.
While pressing the
x
CANCEL/CHG
key on the set, press
the keys on the remote commander with the following order:
N >
t
N >
t
.
t
.
t
N >
t
.
t
N >
t
.
t
t
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
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.
SL803
(TEST)
– MAIN Board (Side B) –
>
t
.
T
>
t
>
t
.
T
.
T
>
t
.
T
Microcomputer
version
display
All off
All lit
Remote commander LCD display
V1.500
006
Microcomputer
version
display
All off
All lit
Set LCD display
Ver 1.500
00
6