Roland A-70, Service Manual

Page: 20 / 27

PARTS LIST A-70 (100V/117V/230V/230VE/240VA)
SAFETY PRECAUTIONS :
The parts marked ! have
safety-related characteristics.
Use only listed parts for
replacement.
NOTE : The parts marked " # '' are new (Initial Parts).
The parts marked ! have Safety - Related characteristics.
Use only listed parts for replacement.
<< EMI >> : Component for EMC.
When ordering any parts listed in the parts list,please specify the following items in the order sheet.
QTY PART NUMBER DESCRIPTION MODEL NUMBER
Ex. 10 22575241 Sharp Key C-20/50
15 2247017300 Knob (orange) DAC-15D
Failure to completely fill the above items with correct number and description will result in delayed or
even undelivered replacement.
CONSIDERATION ON PARTS ORDERING
CASING
# 7699508000 VARN+SILK. TOP CABINET A-70
# 7699509000 VARN+SILK. BOTTOM CABINET A-70
# 7699520000 VARN. RIGHT SIDE PANEL A-70
# 7699521000 VARN. LEFT SIDE PANEL A-70
# 7699519000 VARN. COVER F/EXPANSION BOARD
22205543 GUIDE F/4 POTENTIOMETERS
00788990 WHEEL CAP
# K2238119 SILKSCREENED PLEXIGLAS A-70
KNOB BUTTON
22485253 BLACK CAP F/POT.
K2478200 BUTTON GROUP 22X8+DIFF. -BLACK
K2478202 BUTTON GROUP (4) 22X8 -BLACK-
K2478203 BUTTON GROUP (4) 15X8 -BLACK-
K2478255 TRIANG. BUTTON (BLACK)
22488183 POWER SWITCH KNOB N.001-BLACK
SWITCH
1312975301 SWITCH EVQ-QSB 05K GR.160 on LB ; on RB
13129160 SWITCH SDDLB1-TV5 SW1 on PRIMARY B.
JACK, SOCKET
13449125 JACK SOCKET HLJ0520-01-110 JK115,116,119,120 on JB
13449126 JACK SOCKET HLJ0520-01-010 JK114,117,118 on JB
13429664RI DIN SOCKET MG/PR 5L JK107/113 on JB
DISPLAY UNIT
# 7699511000 LCD ASSY A-70
(Including LCD, PCB and WIRING)
NOTE : Replacement LCD Unit should be made on a unit basis. No replacements available for individual parts.
Replacement only be a unit.
BENDER UNIT
70564101 TURBOLESS PITCH BENDER PBH0201
23275893 WHEEL BW-A0000-327-893 W/CABLES
NOTE : Replacement BENDER Unit should be made on a unit basis. No replacements available for individual parts.
Replacement only be a unit.
KEYBOARD ASSY
# 7699510000 76-K.WEIGHTED KEYBOARD TP/8SAT
NOTE : For details, refer to KEYBOARD PARTS LIST (Pag.4)
PCB ASSY
# 7699502000 POWER SUPPLY PCB ASSY A-70
# 7699503000 RIGHT CONTROL PCB ASSY A-70
# 7699504000 LEFT CONTROL PCB ASSY A-70
# 7699505000 JACK SOCKET ASSY A-70
# 7699506000 PRIMARY ASSY 230/240V A-70
# 7699512000 PRIMARY ASSY 100/117V A-70
# 7699507000 BOUNCE-TO-AFTERTOUCH ASSY A-70
7695004000 RIGHT CONTACT BOARD W/RUBBER ASSY
7695005000 LEFT CONTACT BOARD W/RUBBER ASSY
# 7699501000 MAIN BOARD PCB ASSY A-70
NOTE : When you replace the MAIN BOARD or Lithium Battery, You must reperform bender adjustment. Refer to
[Bender Value Setting] item in the Test Mode.
IC
15229718RI I.C. 6N 137 Photo-Coupler IC101,102 on JB
00342723 I.C. MB90705 H Cpu FMC16 IC7 on MB
15169515 I.C. 74 HC 00 Quad 2-input NAND Gate IC201 on RB, IC709,710 on LB
15249111 I.C. TC7WU04 F (Flat) Triple Inverter IC4 on MB
00349690 I.C. UPD 65622GF-138-3B9 Custom IC IC12 on MB
00129278 I.C. SSC1080 FOB Custom IC IC1 on MB
00788356 I.C. M38881M2-058FP Sub CPU (IPC) IC11 on MB
J5259107 I.C. HM628128ALFP-7 (Flat) SRAM IC6,10 on MB
J5259110 I.C. HM62256LFP-7T (Flat) SRAM IC5,8 on MB
J5169108 I.C. TC 4052 Multip./Demultip. IC707,708 on LB
J5169107 I.C. SN 74LS32 NDS Quad 2-input OR Gate IC103 on JB
15189210 I.C. BA 5218F Dual Op. Amplifier IC13,15,16 on MB
15289710 I.C. UPD 63200GS D/A Converter IC17 on MB
15189250 I.C. M5218 AL Dual Op..Amplifier IC1,2,705,706 on LB
E
RCB = Right Contact Board MB = Main Board
LCB = Left Contact Board PSB = Power Sup. Board
JB = Jack Board RB = Right Control Board
PB = Primary Board LB = Left Control Board
AFTB = After Touch Board
20
A-70 Sept, 1997
7. When the software update is completed, the display will indicate
and the block number will appear in the software update completed block display area to indicate that block
1 has been updated.
8. Press ENTER to get a display like the following.
Now transmit the next file.
9. Repeat steps 4 through 8 until all of the files have been transmitted.
When the software has been updated for all blocks, all of the asterisks “*” will be gone from the software
update completed block display area, as in the following display.
After verifying this status, turn the power off.
²
Adjustment following software update
A software update will cause the user memory of the A-70 to be lost.
Thus, the following adjustments will be necessary.
The necessary adjustments are;
Bender value setting.
Initialization of user memory.
Loading of user memory from card (as necessary).
1. Center calibration of the bender
Refer to the bender value setting (number 5) in the test items.
2. Initialization of user memory
Refer to the item for initialization of internal RAM.
As necessary, load data from a sequencer.
Refer to the items for saving and loading user memory.
UPDATA [12345678]
** : ******-******
UPDATA [1*******]
** : ******-******
UPDATE [1*******]
B1 : CE9A CE9A OK