ROLAND GR 77B

Page 1

JUN. 1986 (SH-77B

GR-77a (SERVICE NOTESFirst Edition

SPECIFICATIONS

Memory Capacity : 64 patches (Battery Back-up)
32 patches (ROM)
32 patches (RAM)
External Memory : Memory Cartridge (M'16C)
Edit : 44 parameters (for tone color)
8 parameters (for MIDI)
Both can be done by Guitar Controller

Output : XLR 6009
Standard Jack 51d]

Power Consumption : 27W

Dimensions : 690 (W) X 375 (D) x 155 (H) mm
27-3/16 (W) x 14-3/4 (D) x6-1/8 (H) in.

Weight : 12 kg/26 lb. 8 oz.

Accessories : Connection Cord (LP-25) : 2
Connection Cable (C-24 G) 2 1
AC Cord : 1
Memory Cartridge (M-1 60) z 1

Options : Programmer PG-BOO
Foot Volume FV-200
Memory Cartridge M-1GC
Carrying Case AB-700

7-seg. LED
NAB-101B
15029414

Display Window
22023682

Switch Film Sheet
22663114

Side Panel (R)
21123194

6 pcs each

Front Panel
22213486

Side Panel (L)

21123193 Foot Switch Assy (including housing, pedal, switch)

SW-2 23123904
For Name/Number plates see Parts List.

Power Switch 24P Connector
1801-0121 SL01204-2324F
13419102 13429405

DIN Socket 5P
TCS 535001-1111
13429615

Jack
YKB 21-5012
13449146

Screws: Tapping B1 3 x 20mm

@Roland Printed in Japan 33-2

AC Inlet XLR Connector
PA-126 100/117/220V HA»16A-3P
13429710 13439851
CM-3
240V
13429703 Slide Switch
_ HSW0372401-530
Memory Cartridge Connector Assy 13159316
(PCB, socket, holder) DIN Socket 6P
7922612000 TC85360-O1-11 1 1
13429621
Bottom Panel
(22813507)
Screws Screws
Tapping B1 Tapping B1

3 x 20 mm (3 pcs) 3 x 20 mm (3 pcs)

Screws ,

Tapping B1

4 x 6 mm (3 pch Rubber Foot Plate
(2212315900)

Page 2

(SH-77a JUN. 1986
Ac CORD, INLET DIODE, LED
13429710 PA-126 inlet 100/117 220v 15019125 155-133
13429708 0M-3 inlet 240v 15019607 052-6.2x zener (
Module Board SWItch Board 13439825 130-320-101 Cord 100v 15019613 052-5.6 zener
7922614000 7922613000 13439812F0 110-704-101 Cord 117v 150196120X 05z-511x zener
1343981300 EC-210-J06 Cord 220v 15019208 1s1135-200
Memory Cartridge Board 13439846 BH-JOl-JOI Cord 240v 1111 15019243 1114111 rectifier bridge \/
ConnactorAssy Board 134398141'0 SC-415-J06 Cord 240v Australian 15019257 4041341 rectifier bridge
15029177 GLSHD-S LED 11ed
TRANSFORMER,COIL RESONATOR See change informatlon on P5 (Eimwsfia) 15029414 11111-1011; 7 segments LED
22455443110 Power transformer 100/117/220/240v
22455376U0 Power transformer 100/117/220/2401/ RESISTOR
12449229 NOB-160111115 Line filter 13919147 RMLS4-103J 10k x 4 array
1 12389803 HC-lB/U 8M1-12 Crystal resonator 13919310 RLM38-103J 10k x 8 array
Mam Board 13919321 RMLSlB-IOBJ 1011 x 13 array
7922606000 PCB ASSY 13919146 RKM14L-503F R-ZR D/A array
7922606000 Main Board 1376915510 14112511 1.811 metal oxide
7922614000 Module Board 1376916110 14112511 3.3k metal oxide
7922613000 Switch Board 1376916210 14112511 3.6k metal oxide
7922608100 Power Supply Board 100/117V 1376917310 14112511 10k metal oxide
7922608400 Power Supply Board 220/240v 13769182T0 14112511 2411 metal oxide
7922612000 Memory Cartridge Connector Board 13769165T0 MRZSN 4.711 metal oxide
(Assy including socket, holder, mounting PCB) 1376916910 MRZSN 6.811 metal oxide
15229909 ERSB336561 5600 posietor
FUSE See change information on P5 (§E§WP,5$P§)
12559335 GGSlA 100/117V CONNECTOR HOUSING
12559508 CEE T250111A 220/24ov 13439262 5267-054
12559385 501.2511 100/117v 13439264 5267-0711
Power Transformer 12559509 CEE TZlSmA 220/2401 13439265 5267-08A
245-376U0 13439278 5267-1111 <
22455375110 Ic 13439267 5267-12A
or 15179208 HD6303XP Micro computer unit 13439263 5267-06A
245.443uo 15179713 P-ROM 27128 for master CPU 13439261 5267-0411
22455443U0 15179714 P-ROM 2764 for slave CPU 13439273 5268-0611
Power Supply Board 15179110N0 0P08253C-2 timer/counter 13439270 5268-0311
7922608200(100/117V1 15179128 MSL8255AP-5 Programmable peripheral interface 13439275 5268-10A
79226°34°° 2° 12113123 133131;? 173 M 3 5263"
converter
7922603500 40 15219149 14145437 Digital noise source MISCELLANEOUS
15219139 PS-TSIBA Reset IC 12569149 BR2325-HC Lithium Battery
15159104H0 110140111111 Quad NAND 22463470 Heat Sink 246-470 power 111
15159134110 110140231311 Decoder 22465124 Heat Sink 246-124 rectifier 4041141
15159113H0 HD14OSIBP Analog switch 22910167 Flexible PCB 291-167 1
15159503 TC40H000 c1105 inverter 13479172 5111111 Card SMCDZB x 250-1301017125 flat cable
15159524 TC40H245 CMOS driver 13529104 DE7150F47ZMVA1 line bypass capacitor
15159507 TC4011273 03:31 13-1719 12199552 UF0005-02 fuse holder
15169301110 110741500 Quad Z-NAND 22393118 Edit Map magnet sheet
15169304110 H074Lso4 Hex inverter 22373605 Memory Cartridge M-16c 011-7713 sample sounds
PARTS LIST 15169307Ho HD74LSZ7 Tri 11011 23483172 0-240 connection cable
15169339H0 H074Ls32 Quad 11011 (011-77/011-7715)
15169311110 110741574 Dual D-FF 12449266 BLDl 11111-1162 13111 filter
CASING 15169318116 H074le38 Decoder 2226330900 Cushion 226-309
22213436 Front Panel 15169321110 HD74L8161 Counter
22313507 39 Panel 15169322Ho H074le74 Hex 0-11
21123193 side Panel Left 15169325130 14741.5273 0ctal D-FF
21123194 Side Panel Right 15169327H0 H074Ls367 Hex buffer
22123159 Rubber Foot Plate 15169329110 1107415393 Dual 4-bit binarv counter [
22193796 Push Switch Holder 15149115 54523 LED driver
22663114 Switch Film Sheet 15159702 1454563 LED driver
22023682 Display Window 15159115 HD14066BP Quad analog switch
15159114 HD14OSZBP Dual 4-ch analog Mux
sw1'rc1-1 . 15189171 M5218P OP amp
23123904 Foot siwtch Assy sw-z including housing, pedal, switch 15189136 5218L op amp
22123148 Pedal Plate 1" 15139154 11-064 0P amp
22123149 Pedal Plate "2" 15139119 46ch 01, mm)
22123150 Pedal Plate "3" 15199117 145230L Voltage regulator
22123151 Pedal Plate "4" 15219213 m3009 13130
$123152 Pedal Plate "5" 15169504 MN3101 13130 driver
153 Pedal Plate "6"
22123154 Pedal Plate "7" 15229826 11131105 VCF VCA pack
22123155 Pedal Plate "s" TRANSISTOR
22123156 Pedal Plate "HOLD" 15119133 1311111411 Digital
22123192 Pedal Plate "CART 15129150 DTC114F 0131131
22123194 Pedal Plate "11111111" 15119106 25117330 equivalent: ZSA933
15129107 2509450
13159316 HSWO372-01-530 slide 15119103 23217986 Dual
13129715 101010901 Push 1512913000 zsc1583c Dual
22473718 Key TOP 15119601 25136051. Power
13149102 1801-0121 Power 15129600 25135711 Power
15139103 251130144311 1701
SOCKET, CONNECTOR 15119814 281383411 Power
13449146 YKBZl-SOIZ phone jacks 15129816 zspssoy Power
13429615 155350-0141 DIN MIDI output 15129107 2509450 Gm selected for 01, Q2 and 03 of Main Board;
13429621 1055360-01-1111 0111 PG-SOO input dotted in Red, Orange, Yellow or Green,
13429122 FHllZS-Z.54DSA flexible PCB The 12 25.39451; transistors (3 for each
13439280 (IF-02S flat cable voice) on a given Main Board should be of
13429405 51901204432411 guitar input the same color dot for reproducing uniform
13439851 HA-ISA-3P XLR timbre,
15129170 25094511 eeletted