Roland BOSS RT-20, Service Notes

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10
Dec. 2005 RT-20
Parts List
fig.part1e
SAFETY PRECAUTIONS:
The parts marked have
safety-related characteristics. Use
only listed parts for replacement.
NOTE: The parts marked # are new. (initial parts)
Due to one or more of the following reasons,
parts with parts code ******** cannot be supplied as service parts.
• Part supplied only as a component in a complete assembly
• Copyright does not permit the part to be supplied
• Part is sold commercially
The description "Q'TY" means a necessary number of the parts per one product.
CASING
G2357115 PEDAL FOOT M8 2
G2357116R0 PEDAL PLATE 62X53 2
G2017620 BATTERY CASE 1
G2017621R0 BATTERY COVER 1
75D422E000 BOTTOM COVER 1
G2357118 BOTTOM FOOT 2
# 75E202T000 CASE 1
# G2217192R0 PANEL 1
# G2187529R0 PEDAL R 1
# 75E202T1R0 PEDAL L 1
# G2217191R0 REAR PANEL 1
KNOB, BUTTON
75D522N0R0 MINIMUM VR KNOB 8
SWITCH
13129778 TACT SWITCH SKQKAH SW2, SW3 2
JACK, EXT TERMINAL
F3159104 SWITCH SS037-P222BHH-PE9 SW1 1
F3449415 ADAPTOR JACK KM02009AB JK8 1
F3449707 PHONE JK (STREO) HTJ-064-12DS JK1, JK4 2
13449150 6.5MM JACK HLJ0544-0100109 JK2, JK3, JK5, JK6 4
PWB ASSY
# 75E203J0R0 JACK BOARD ASSY 1
# 75E203P0R0 PANEL BOAD ASSY 1
IC
# 04012978 IC (CPU) UPD780034AGK IC11 1
02565501 IC (DSP) TC220CCA0AF-B01 (MR3) IC10 1
F5179125 IC (DC-DC) S-8520E33MC-BJS-T2 IC12 1
F5209150 IC (RESET) S-80130ALMC-JAP-T2 IC16 1
F5289102 IC (OP.AMP) NJM2100M 8P SOP IC3 1
15189261 IC (BIPOLAR OP AMP) M5218AFP-600E IC1, IC2, IC5 3
15289109 IC (BIPOLAR OP AMP) M5216FP-600D IC4 1
F5279309 IC (LED DRIVER) BU2090F-E2 IC13, IC14, IC15 3
02451434 IC (AD/DA) AK4552VT IC6 1
# F5249136R0 IC (CMOS) 74HC4052PW (TSSOP16) IC9 1
TRANSISTOR
F5139608 POWER MOS FET IRF7606 Q14 1
15329103 FET 2SK880GR-TE85R Q1,Q4 2
F5329530 FET 2SK879Y Q2, Q3, Q5, Q7, Q15 5
15319107 TRANSISTOR 2SC4116-GR (TE85R) Q9, Q10, Q11, Q12, Q13 5
DIODE
F5339137 DIODE SS14 VF=0.45V D7, D6 2
F5029126 POWER LED L-113GDT LED1 1
15029281 LED (RED) GL-3PR8 LED34, LED35 2
15339120 DIODE 1SS302 DA1, DA2, DA3, DA4, DA5, DA6, DA7 7
15339119 DIODE 1SS-352 D1, D2, D3, D4, D9 5
# F5029163R0 CHIP LED 19-21UBC/C470/TR8
(CHIP_BLUE) LED2, LED3, LED4, LED5, LED6, LED7,
LED8, LED9, LED1 16
# F5029162R0 CHIP LED 19-21SURC/S530-A2/TR8 LED18, LED19, LED20, LED21, LED22,
LED23, LED24, LE 16
F5019309 ZENNER DIODE 02DZ5.1-Y D8 1