Test Mode; Outline; Setting Method Of Test Mode; Operation In Setting The Test Mode - Sony MZ-R701 Service Manual

MZ-R701/R701DPC

4-1. Outline

• This set provides the Overall adjustment mode that allows CD
(PB) and MO (REC/PB) disk 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 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 set is shown.

4-2. 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 3 of IC801 to the ground). Then, turn on the
power.
MAIN BOARD (SIDE B)
2 In the normal mode, turn on the
[VOL --]
ing the key press the following order:
t t t
> > .
t t t
. > .
12
SECTION 4

TEST MODE

C821
C815
X801
AP828
SL801
(TEST)
AP817
[HOLD]
switch. While press-
t t
. >
t
X X

4-3. 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.
This set LCD display
All lit
BASS LP24 MONO
All off
Microcomputer
Ver 1.300
version
display
• When the
key is pressed and hold down, the display at that
X
time is held so that display can be checked.
Caution: On the set having the microcomputer version 1.000,
some adjusted values were set in the manual mode at
the shipment, but these data will be cleared when the
NV is reset. Therefore, on the set having the micro-
computer version 1.000, change the adjusted values
following the Change of Adjusted Values immediately
after the NV was reset (see page 18).

4-4. 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 18) has not been finished
completely, always start in the test mode. (The set cannot
start in normal mode)
88: 8 8
AM
e
PM
F 1 SHUFF PGM
SYNC REC
REC DATE REMAIN
00 5