Test Mode; General Information; Tools; Setting The Test Mode - Sony NW-MS7 Service Manual

3-1. GENERAL INFORMATION

In this set, the functions and audio capabilities can be checked by
entering the TEST MODE.

3-2. TOOLS

1. Memory stick player NW-MS7
2. Test memory stick
Note: This test requires the memory stick for operational check.
Once created, the memory stick for test may be used for
each test.
For information on how to create this stick, see
"3-6. Creating the Memory Stick for Operational Check."

3-3. SETTING THE TEST MODE

1. Insert the MG memory stick into the main unit.
2. While holding down the x (STOP) key and the B (PLAY)
key, push the RESET button. (Release the RESET button first.)

3-4. RELEASING THE TEST MODE

1. When the test mode is completed, push the RESET button.
STEP Test item
-1 RAM test
0 LCDs all ON/all OFF
1 BEEP generation
2 Destination setting
3
4 EEPROM check
5 Reference signal level
Frequency characteristic
6
20 Hz (XP)
Frequency characteristic
7
20 kHz (XP)
Frequency characteristic
8
20 Hz (SP)
Frequency characteristic
9
20 kHz (SP)
A De-Emphasis 5 kHz (XP)
B De-Emphasis 16 kHz (XP)
SECTION 3

TEST MODE

Test No. Test item
Display display
1.¢1b
Test ¢1
(Ver. No.)
Test ¢1
Test ¢2 SEL SIMUKE
Test ¢3 E2P WRITE
Test ¢4 E2P CHECK
Test ¢5 SoundTest
Test ¢6 SoundTest
Test ¢7 SoundTest
Test ¢8 SoundTest
Test ¢9 SoundTest
Test ¢A SoundTest
Test ¢B SoundTest
– 12 –

3-5. OPERATIONS IN THE TEST MODE

Once the Test Mode is entered from the normal mode, the system
will present the displays below.
BASSwa31SHUFu
The system will proceed to the next step each time the x (STOP)
key is pressed.
Description of the test
The address and data buses are tested by reading/writing
32-bit data. (The ROM checksum is also checked in this step.)
The backlight turns on to indicate that this test is OK.
Check for unusual condition in any LCD segments and
common signal. Visually check.
Continuously sounds BEEPs.
The destination is set by pressing the B (PLAY) KEY. (For
example, For A t B KEY t For B t B KEY t For C)
(Do not operate)
(Do not operate)
The backlight turns off, 1 kHz (0 dB) reference in the test
memory stick is played back, and the headphone output is
set to the reference output value (Vol. 23).
SP/20 Hz (0 dB) in the test memory stick is played back.
SP/20 kHz (0 dB) in the test memory stick is played back.
XP/20 Hz (0 dB) in the test memory stick is played back.
XP/20 kHz (0 dB) in the test memory stick is played back.
5 kHz (–4.53 dB) emphasis off in the test memory stick is
played back.
16 kHz (–9.04 dB) emphasis off in the test memory stick is
played back.
test No. display
test item display
Test MS
playback
track
001
002
003
004
005
006
007