Roland Fantom-S88, Service Notes

Page: 21 / 51

22
Apr.2003
15.
Switch1 & LED
16.
Switch2
17.
Keyboard
18.
LCD
19.
USB
20.
Factory Reset
Test mode procedure
Before you begin Test mode, make sure that the power is turned off, detach the
EXP COVER from the bottom panel of the Fantom, and insert the DIMM and
expansion boards you provided.
0. VERSION check
When you enter Test mode, you will begin from the VERSION check item.
fig.0-2_70
The LCD display shows the program version number.
All LEDs will light.
Press the [8] button to proceed to the next test item.
1. MUTE test
This tests the mute circuit on the jack board.
The LCD display will show as follows, and a built-in pattern will begin
playing.
fig.1-1_70
Verify that an audio signal is being output from the [PHONES] jack and the
[OUTPUT A L/R] jacks.
Then verify that the audio signal is muted while you press the [4] button.
Press the [8] button to proceed to the next test item.
2. DEVICE test
This tests various devices located on the main board.
When you enter the DEVICE test, the LCD display will show as follows, and
device testing will begin automatically.
fig.2-1_70
Devices corresponding to LCD display indications
If all test results are OK, you will automatically proceed to the next test item.
3. DIMM test
This tests the DIMM socket and peripheral circuits.
When you enter the DIMM test, the LCD display will show as follows, and the
DIMM test will begin automatically.
fig.3-1_70
If the test result is OK, you will automatically proceed to the next test item.
LCD display indication Corresponding main board device
1: FLASH (NOR) IC19
2: FLASH (NAND) IC53
3: SD-RAM (MAIN) IC2,6
4: SD-RAM (SMPL) IC20,24
5: PPC IC4
6: BA IC21
7: WAVE ROM IC28
8: XV IC27
9: XV D-RAM IC37
10: ESP IC22
11: ESP D-RAM IC23
12: USBC IC56