Zoom G1 Service Manual
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Zoom G1 Service Manual

Guitar effects pedals
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  • Page 2: Table Of Contents

    Contents Specifications…………………………………………………………………………………………3 Function Test …………………………………………………………………………………………4 Back Up User’s Data …………………………………………………………………………………8 Recovering the Factory Default …………………………………………………………………….10 Special function start up ……………………………………………………………………………11 Circuit Check Specifications ………………………………………………………………………14 Circuit Diagram ……………………………………………………………………………………15 PCB Parts Layout and Pattern ………………………………………………………………………18 Exploded view ………………………………………………………………………………………19 Parts List ……………………………………………………………………………………………20 Spare Parts Order List ………………………………………………………………………………23 Spare Parts Order Sheet ……………………………………………………………………………25 Supplement: Identification of main PCB ………………………………………………………………26 - 2 -...

  • Page 3: Specifications

    Phones 20mW + 20mW (into 32ohms load) Control input For FP01/FP02 or FS01 Power requirements AC adapter 9 V DC, 300 mA (center minus plug) (ZOOM AD-0006) Batteries Four IEC R6 (size AA) batteries, approx. 12 hours continuous operation (alkaline batteries)

  • Page 4: Function Test

    Function Test Starting in “Test mode” 1) Start up the G1 in the following ways using the AC adaptor AD-0006. a) Connect AC adaptor holding the [BANK UP・TAP] key (SW1) and [RHYTHM] key (SW2). b) Connect AC adaptor when Ground and the test point TP4.
  • Page 5 If any error occurs, “nG” is indicated on the 7 segment LED. 5. Product number 1)Press the FOOT SWITCH [^] (SW5). Make sure that “G1” is indicated on the 7 segment LED. 2) Press the FOOT SWITCH [^] (SW5) again. Make sure that “9b” is indicated on the 7 segment LED.
  • Page 6 7. Foot switch 1) Connect FS-01 with CONTROL IN connector (J1). 2) Push the foot switch on/off. Make sure that the values on the display change as follows. Expression pedal Values OFF (not pushed) 00–01 ON (pushed) 05–09 8. Through sound Input sine wave (440Hz, -20dBm) to the [INPUT] jack (J2) and monitor the output from the [OUTPUT] jack (J4) with loudspeakers and oscilloscope.
  • Page 7 Make sure that the 7 segment LED indication returns to the previous state. 15. Stability Put the G1 on a surface plate, and push it diagonally. Make sure that there is no remarkable space (less than ±0.3 mm is acceptable).

  • Page 8: Back Up User's Data

    Back Up User’s Data If necessary, back up the user’s effect patch data to avoid an accidental erasing. Required · User’s G１ as a transmitter (hereinafter referred to as “the transmitter”) · Another G１ as a receiver (hereinafter referred to as “the receiver”) ·...
  • Page 9 6. Press the [BANK UP・TAP] key (SW1) of the receiver, and make sure that the 7 segment LED lit “rx”. The receiver is ready to receive the data. 7. Press the [Rhythm] key (SW2) of the transmitter and make sure that the 7 segment LED lit “tx”.

  • Page 10: Recovering The Factory Default

    Recovering the Factory Default In the factory default condition, the patches of the user area (A0-d9) contain the same settings as the patches of the preset area (00-39). Even after overwriting the user patches, their original content can be restored in a single operation (“All Initialize”...

  • Page 11: Special Function Start Up

    1. Special function and how to start up There are some methods to start up the G1 for service. up the G1 in the following ways using the AC adaptor AD-0006 or All special functions start connecting the plug into INPUT connector (J2) when set the battery.
  • Page 12 Make sure “ok” appears on the 7 segment LED. 6) Make sure that the following indications appear on the 7 segment LED. When the 7 segment LED is correctly displayed, Restart the G1 by press the [BANK UP・TAP] key (SW1).
  • Page 13 2) Press the FOOT SWITCH [^](SW5) or [v] (SW4). Make sure “10” appears on the 7 segment LED. 3) Restart the G1 by press the FOOT SWITCH [^] (SW5) or [v] (SW4) again. ● Revision The 7 segment LED is displayed system revision of the G1.

  • Page 14: Circuit Check Specifications

    Circuit Check Specifications Items Specifications Inputs Conditions/notes Display and Indicator Keys pressed in "Test mode" Current consumption 115mA±20mA Short Immediately after Test mode starts All LEDs are lit. All lit None (Start up) Power supply voltage 3.3VA 3.3V±0.15V Short Immediately after Test mode starts All LEDs are lit. All lit None(Start up) +3.3VD...

  • Page 15: Circuit Diagram

    SEG_F +3.3VD TP44 PORT_C2D SEG_G +3.3VD +3.3VD SEG_DP TP10 /RESET TP11 ICE/ROM-WRITER /RESET ENCA ENCB TP45 2.2k 2.2k CPUD[0..7] COMMON CPUD[0..7] 192FS TP40 192FS FLMD0 FLMD0 F-11EN7H20M+C L15Fx7(0) 0.027u 0.039u G1 CIRCUIT DIAGRAM MAIN PCB(PCB-0169) CPU Circuit - 15 -...
  • Page 16 IC9E R67 open-r DSP_SDCLK 74HCU04 + C82 +3.3VD DSP_BE0 74HCU04 74HCU04 10u/16V TP38 DSP_BE1 -5VA -5VA TP39 192FS DSP_SDCKE IC9F open-l 192FS 1SS133 1SS133 74HCU04 0.1u HC-49 1SS133 18.432MHz open-l G1 CIRCUIT DIAGRAM MAIN PCB(PCB-0169) DSP Circuit - 16 -...
  • Page 17 KTA1001 22uH R312 C305 R313 R309 IC301 220p 100k-F +3.3LEDV open-r VOUT + C306 C304 D301 470u/16V open-cp 2200p ON/OFF R311 + C303 R310 R314 XC6365B103MR RB160L-40TE25 2.2k 390k-F 10u/16V G1 CIRCUIT DIAGRAM MAIN PCB(PCB-0169) Analog - 17 -...

  • Page 18: Pcb Parts Layout And Pattern

    PCB Parts Layout and Pattern PCB-0169 Top Layer Bottom Layer - 18 -...

  • Page 19: Exploded View

    18 FOOT RUBBER 1-R Z2D-0070 SP02366 19 FOOT RUBBER 2-R Z2D-0071 SP02367 20 SUPPORT FOOT RUBBER Z2D-0072 SP02368 21 SCREW M3×8L P-tight SP01185 22 SCREW M3x10 P-tight SP02074 23 G1 Main PCB assy PCB-0169 SP40171 Exploded View - 19 -...

  • Page 20: Parts List

    Parts List MAIN PCB Partslist PCB-0169 No. NAME SUB SPECIFICATIONS DESCRIPTION REFERENCE No. Q'ty UPD78F0537GB(T)-UEU-A LQFP-64pin 10x10 UPD78F0537GB(T)-601-UEU-A LQFP-64pin 10x10 ZFX-3 LQFP-176pin 0.5-26X26 SDRAM P2V16S406TP-6G TSOP-50pin SDRAM IS42S16100C１-７TL TSOP-50pin SDRAM RMS116T(LF)-7A TSOP-50pin SDRAM EM636165TS-7G TSOP-50pin AD/DA WM8734SEFL/R QFN-28pin 5x5 LOGIC IC SN74HCU04ANSR SOP-14pin LOGIC IC...
  • Page 21 No. NAME SUB SPECIFICATIONS DESCRIPTION REFERENCE No. Q'ty C2 C5 C7 C16 C19 C20 C21 C22 C24 C30 C33 C34 C39 C49 C51 C52 C53 C54 C55 C56 C57 40 Chip Capacitor 0.1u-Z F 25V 1608(0603) C58 C60 C62 C63 C64 C65 C66 C67 C68 C69 C71 C72 C73 C74 C75 C76...
  • Page 22 G1 JAN Bar-Code Label Z8F-0084-A4 for 120GL G1 JAN Bar-Code Label Z8F-0084-A4 for 220BX G1 JAN Bar-Code Label Z8F-0084-A4 for 240UK G1 USA Bar-Code Label for Gift Box G1 USA Bar-Code Label for Carton Box FCC Label Z2I-0729 Aluminum label Destination Label...

  • Page 23: Spare Parts Order List

    Spare Parts Order List The parts with ''*'' are available from G1 G2Series=G2, G2.1u, B2, B2.1u, A2, A2.1u Code No. PART NAME SPECIFICATIONS COMMON USE Q'TY PRICE (Japanese yen) PCB ASSEMBLY SP40171 G1 Main PCB assy PCB-0169 FR-4 2layer,120mm x 92mm (PCB-0169) MAIN PCB Partslist : PCB-0169 Code No.
  • Page 24 OM00424 Operation Manual Spanish OM00425 Operation Manual Chinese OM00426 Operation Manual Portuguese CARD, SHEET SP00984 Warranty Card US Z2I-0730 SP02378 Patch List Sheet Z2I-0725 SP02379 Logo Label for Unit Z2E-0216 SP02380 G1 Display signal chart sheet Z2I-0726 - 24 -...

  • Page 25: Spare Parts Order Sheet

    To: ZOOM Corp. Overseas Sales Group page of Parts Order Sheet Code No. Product name Parts name Specifications Unit price ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥ ¥...

  • Page 26: Supplement: Identification Of Main Pcb

    Main PCB is common use for other production. Therefore, this main PCB has check box to identify which production will be used for. See below figure, it shows check box location on the main PCB. Bottom Layer G1 B1 A1 Check box on the main PCB - 26 -...

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