Roland RS-5 Service Notes page 13

RS-5
[VALUE] [Contrast value] [7-segment display] [LCD]
-----------------------------------------------------------------------------
Contrast(Max) [ ] All segments go out
− Contrast(1) [1.1.1.] All segments light up
↑ ↓
Contrast(2) [2.2.2.]
↓
Contrast(3) [3.3.3.]
Contrast(4) [4.4.4.] ↓
↓ Contrast(5) [5.5.5.] ↓
＋ Contrast(6) [6.6.6.] ↓
↓
Contrast(7) [7.7.7.]
Contrast(8) [8.8.8.] ↓
-----------------------------------------------------------------------------
• Check the LCD contrast and 7-segment LED display.
• Pressing [ENTER] proceeds to the next test.
• Check the following parts when the LCD contrast doesn't
change or the 7-segment LED display is incorrect.
LCD NG: MAIN BOARD IC3, Q30, L17, C195,
R128, R130, R132, R139, CN9
PANEL A BOARD IC4(LCD),CN1
7-segment LED NG : MAIN BOARD IC3, IC26, IC28, Q9,
Q11, Q12, Q16~23, CN7
PANEL A BOARD LED7(7seg),CN3
5 : A/D Test 1
• Check the bender and modulation functions.
• When entering this test, check to see if the bender is upright.
(To read the A/D value as the mid-point value when entering
this test)
• Pull the bender lever fully to the left and right.
If the reading is –256 when pulling to the left and 256 when
pulling to the right, OK will be displayed.
A check sound will be output when the correct value is
achieved.
• Push the bender lever all the way to the modulation side and
then pull it back.
OK will be displayed if a value of 127 is achieved.
A check sound will be output when the correct value is
achieved.
• Displaying OK for both will automatically proceed to the next
test.
• Check the following parts if OK is not displayed.
Bender unit, bender connector and wiring,
MAIN BOARD Q24~25, L18, L21~23, R118, R120~121,
R126, R129, R131, CN6
Pressing [ENTER] proceeds to the next test.
6 : A/D Test 2
• Check control knob function.
R : RATE
D : DEPTH
A : ATTACK
R : RELEASE
C : CUTOFF
R : RESONANCE
• Move the knob at the way to and from the left and right in this
order: RATE, DEPTH, ATTACK, RELEASE, CUTOFF,
RESONANCE.
• OK will be displayed for each when 0 for fully left, 127 for
fully right and then 0 for fully left again is achieved.
• OK will not be displayed when the order of the knob is
different.
• Also, sweep sound is output while operating the knob and
check sound when the correct value is achieved.
• Displaying OK for all will automatically proceed to the next
test.
• Check the following parts if OK is not displayed.
MAIN BOARD IC2, R167~168, R137~138, CN7
PANEL A BOARD VR1~6, IC1, IC2, CN3
Pressing [ENTER] proceeds to the next test.
7 : A/D Test 3
• Check the functions of the hold and expression pedals.
• Connect the hold pedal to the rear of the PEDAL HOLD.
Step on the hold pedal and restore.
OK will be displayed and a check sound output if the function
is correct.
• Connect the expression pedal to the rear of the PEDAL
CONTROL.
Step on the expression pedal and restore.
Check to see if change occurs between 0-127.
OK will be displayed and a check sound output when the
maximum value is 127 and the minimum value is 0.
Displaying OK for both will automatically proceed to the next
item.
• Check the following parts if OK is not displayed.
HOLD NG : MAIN BOARD JK2, L1~2, R1~2, IC2
EXP NG : MAIN BOARD JK6, IC25, L14~16, R112~116,
IC2
Pressing [ENTER] proceeds to the next test.
Jan. 2001
13