Boss GT-1 Service Notes Download Page 21 | Manualshive

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21

Sep. 2016

GT-1

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Summary of Contents for GT-1

Page 1: ...ar 5 Exploded View 6 Exploded View Parts List 7 Exploded View Fig A 8 Exploded View Parts List Fig A 9 Plain View 10 Disassembly Procedure 11 Block Diagram Wiring Diagram 12 Parts List 13 Virus Check 15 Verifying the Version 15 Data Backup and Restore Operations 15 Performing a Factory Reset 15 System Update Procedure 16 Test Mode 16 Circuit Board Main Exp Pedal Board 22 Circuit Diagram Main Board...

Page 2: ...se a number of circuit boards are grouped together and supplied as a single circuit board under a different part code Because supply is prohibited due to copyright restrictions Because reissuance is restricted Because the part is made to order at current market price Because it is carried in electronic data on the Roland web site Because it is a package or an accessory irrelevant to the function m...

Page 3: ...edal Display Graphic LCD 132 x 32 dots backlit LCD Connectors INPUT jack OUTPUT L MONO R jacks 1 4 inch phone type CTL2 3 EXP2 jack 1 4 inch TRS phone type AUX IN jack Stereo miniature phone type USB COMPUTER port USB type B DC IN jack Power Supply Alkaline battery AA LR6 x 4 AC adaptor sold separately Current Draw 200 mA Expected battery life under continuous use Alkaline Approx 7 hours These fig...

Page 4: ... DISPLAY COVER 1 5100053348 LCD QFG13232 30 PTDSOS R 1 5100051760 DISPLAY CUSHION 1 3 5100051761 R KNOB 3 NUT attached to VR 3 5100053342 ROTARY POTENTIOMETER R1132G6JV1O203FC50F9 3 4 5100051751 SWITCH PEDAL 3 5100051753 SWITCH PEDAL SW SPRING 3 5100051766 SWITCH PEDAL TACT SPRING 3 5100051752 SWITCH PEDAL ESCUTCHEON 3 01780101 TACT SWITCH SKQKABD010 3 5 01016167 11M M ROTARY POTENTIOMETER RK11K11...

Page 5: ...Rear 1 2 3 5 6 4 No Part Code Part Name Description Q ty 1 02897334 6 5MM JACK HTJ 064 10D 1 2 5100028016 3 5MM JACK HTJ 035 10ABPP1 2 3 02341712 6 5MM JACK HTJ 064 10I F3449106R0 2 4 02341645 6 5MM JACK HTJ 064 04A 1 5 5100047083 USB CONNECTOR U7F04D B1NB 1 6 13449720 DC JACK HEC2305 016250 1 ...

Page 6: ...6 Sep 2016 GT 1 Exploded View fig bunkaizu total eps View 2 View 1 1 a 3 4 14 11 6 7 8 9 10 5 13 b c a 15 12 16 18 19 17 17 20 22 21 22 Refer to Fig A ...

Page 7: ...H PEDAL ESCUTCHEON 3 11 5100051756 STAY 1 5100051442 MAIN BOARD ASSY 1 This unit includes the following parts 12 MAIN BOARD 1 13 EXP PEDAL BOARD 1 14 5100053348 LCD QFG13232 30 PTDSOS R 1 15 5100052212 SWITCH PEDAL HOLDER 3 16 5100051749 BOTTOM COVER 1 17 5100047009 BATTERY TERMINAL 3 18 5100053384 BATTERY TERMINAL 1 19 5100053383 BATTERY TERMINAL 1 20 5100051750 BATTERY COVER 1 21 5100051763 VR P...

Page 8: ...8 Sep 2016 GT 1 Exploded View Fig A fig bunkaizu pedal eps A1 A2 A3 A4 A5 A7 A8 A6 A7 A9 a b c g h h d f e ...

Page 9: ...ollowing parts A6 EXP PEDAL BOARD 1 MAIN BOARD Refer to Exploded View p 6 1 A7 5100051764 VR PEDAL BOLT HOLDER 2 A8 5100051755 VR PEDAL HOLDER 1 A9 5100051762 VR PEDAL CUSHION TOE 2 a NUT attached to VR 1 b WASHER attached to VR 1 c 5100046938 PLAIN WASHER 9 1X14X0 5 ZC 1 d 5100052791 U NUT M6 BZC 1 e 5100052792 PLAIN WASHER 6 5X12 8X1 0 BZC 1 f 5100052795 SCREW M6X50 HEXSOCKET MACHINE BZC 1 g 401...

Page 10: ... View 2 View 1 View 2 a b c c c No Part Code Part Name Description Q ty a 40011278 SCREW 3X8 BINDING TAPTITE P FE ZC 4 b 40012867 SCREW M3X8 PAN MACHINE W SW PW ZC 3 No Part Code Part Name Description Q ty c 40019123 SCREW 3X8 BINDING TAPTITE S BZC 13 ...

Page 11: ...he bottom 6 Lift the bottom cover gently and disconnect the connectors x 2 on the main board 7 Detach the bottom case 8 Disconnect the flat cable x 1 and wiring x 1 connecting the main board to the LCD 9 Remove the screws x 7 securing the main board 10 Detach the main board Give attention to ensure that the wirings do not ride up on the rib and are not pinched by the upper and lower cases when ass...

Page 12: ...OUT1 OUT2 OUT3 OUT5 D 1 2 D 3 3 FBD 3 6 FBAVCC IC13 Reg A 3 3 Q19 Ripple FIR AVCC Q1 Q2 Protection IC21 ESC2 CKCPU X1 16 9344 CKUDL IC12 Buffer IC10 48MHz AIN XMUTE OUTPUT SD JK8 USB UDDP UDDM IC11 RESET RESET IC9 S F SFI JK7 CTL EX P IC3 SDRAM ERAM 64Mbit ED IC14 LATCH IC2 SDRAM WORK 128Mbit MD MA EA CN5 IC15 INV LCD E D 3 3 LCD BACKLIGHT IC16 VR1 VR2 VR3 SW14 SW15 MPX A B SW4 SW13 SW1 SW2 SW3 GP...

Page 13: ...OM COVER 1 CHASSIS 5100051767 JACK HOLDER 1 5100052212 SWITCH PEDAL HOLDER 3 5100051764 VR PEDAL BOLT HOLDER 2 5100051755 VR PEDAL HOLDER 1 5100051757 PIN STAY 1 5100051756 STAY 1 KNOB BUTTON 5100051758 KEY UNIT 1 5100051761 R KNOB 3 SWITCH 5100051446 SWITCH EVPAWCD2A 12 01780101 TACT SWITCH SKQKABD010 3 JACK EXT TERMINAL 5100028016 3 5MM JACK HTJ 035 10ABPP1 2 02341712 6 5MM JACK HTJ 064 10I F344...

Page 14: ...AY COVER 1 5100051765 RUBBER FOOT 4 5100053354 SHIELD COVER 1 5100018712 JACK SHIELD 1 5100051760 DISPLAY CUSHION 1 5100051762 VR PEDAL CUSHION TOE 2 5100051763 VR PEDAL CUSHION HEEL 3 5100051753 SWITCH PEDAL SW SPRING 3 5100051766 SWITCH PEDAL TACT SPRING 3 5100027814 LOCKING CABLE TIE CV 100V0K 1 ACCESSORIES Standard 5100051784 OWNER S MANUAL MULTILANGUAGE 1 ...

Page 15: ...uence program When the recording and playback starts BULK DATA SENDING appears on the screen of the GT 1 and the display returns to the initial screen in about 1 second but the data is sending from the GT 1 continuously After the sending is completed stop the sequence program It takes about 40 to 50 seconds to complete the sending 5 Delete the track 1 in the MIDI sequence program and let the track...

Page 16: ...reen of the GT 1 7 Press ENTER The update starts When Completed is displayed the update has finished 8 Disconnect the dummy plug from the INPUT jack The power is switched off Test Mode Items Required AC adaptor PSA series device Computer Amp equipped monitor speakers Signal generator Oscilloscope Noise meter Tester Expression pedal EV 5 USB cable Dummy plug 1 4 inch mono phone plug with 47 kΩ load...

Page 17: ...the knob 1 2 or 3 whatever possible to select a test item and press ENTER To return to the TEST MENU press EXIT It is impossible to return from 5 SW LED to the TEST MENU until all buttons have been pressed Quitting the Test Mode Disconnect the plug from the INPUT jack to switch off the power 1 VERSION This verifies the version 1 In the TEST MENU select 1 VERSION and press ENTER Version information...

Page 18: ...LCD ENCODER and press ENTER fig test 7 1 eps 2 Slowly turn the knob 1 clockwise The value displayed on the screen increases by one unit at a time and the contrast grows darker If the knob is turned in the opposite direction or the wrong knob is turned a black band appears at the bottom area of the screen In this case turn the knob 1 clockwise and continue to the test 3 When the value displayed on ...

Page 19: ...47 kΩ load resistor to the INPUT jack and enter the Test Mode 2 In the TEST MENU select 12 NOISE and press ENTER 3 Connect the amp equipped monitor speakers to the OUTPUT L MONO and R jacks 4 Drop the unit from a height of about 5 centimeters and verify that no abnormal noise is produced 5 Disconnect the amp equipped monitor speakers and connect the noise meter to the OUTPUT L MONO and R jacks 6 V...

Page 20: ...s are as the following values OUTPUT L 93 dBm or lower DIN Audio OUTPUT R 93 dBm or lower DIN Audio 18 Change the connection of the noise meter to the PHONES jack 19 Verify that the residual noises are as the following values PHONES L 93 dBm or lower DIN Audio PHONES R 93 dBm or lower DIN Audio 20 Detach the noise meter AUX Test 21 Connect the oscilloscope to the OUTPUT L MONO and R jacks 22 Conne...

Page 21: ...21 Sep 2016 GT 1 ...

Page 22: ...22 Sep 2016 GT 1 Circuit Board Main Exp Pedal Board fig b main 1 eps ...

Page 23: ...23 Sep 2016 GT 1 fig b main 2 eps ...

Page 24: ...24 Sep 2016 GT 1 Circuit Diagram Main Board 1 3 fig d main 1 eps L ...

Page 25: ...25 Sep 2016 GT 1 fig d main 1 eps R ...

Page 26: ...26 Sep 2016 GT 1 Circuit Diagram Main Board 2 3 fig d main 2 eps L ...

Page 27: ...27 Sep 2016 GT 1 fig d main 2 eps R ...

Page 28: ...28 Sep 2016 GT 1 Circuit Diagram Main Exp Pedal Board 3 3 fig d main 3 eps L ...

Page 29: ...29 Sep 2016 GT 1 fig d main 3 eps R ...

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