Zoom g1x Service Manual

Contents

Specifications…………………………………………………………………………………………3

Function Test …………………………………………………………………………………………4

Back Up User’s Data …………………………………………………………………………………9

Recovering the Factory Default …………………………………………………………………….11

Special function start up ……………………………………………………………………………12

Circuit Check Specifications ………………………………………………………………………15

PCB Parts Layout and Pattern ……………………………………………………………………16

Circuit Diagram …………………………………………………………………………………… 17

Exploded view………………………………………………………………………………………20

Parts List ……………………………………………………………………………………………22

Spare Parts Order List ………………………………………………………………………………28

Spare Parts Order Sheet ……………………………………………………………………………30

Supplement: Identification of main PCB ………………………………………………………………31

Supplement: The major difference between before No.022150 and after No.022151 …………………32

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Specifications

Effect types 54 Effect modules max. 8 simultaneous modules Patch memory User area: 10 patches x 4 banks = 40

Preset area: 10 patches x 4 banks = 40 Total 80 patches

Sampling frequency 96 kHz A/D converter 24 bit, 128 times oversampling D/A converter 24 bit, 128 times oversampling Signal processing 32 bit Frequency response 20 Hz – 40 kHz +1.0 dB – 4.0 dB (10kilohms load) Display 2-digit 7-segment LED Input Standard mono phone jack Rated input level -20 dBm Input impedance 470 kilohms Output Standard stereo phone jack (doubles as line/headphone

jack)

Maximum output level Line +3 dBm (output load impedance of 10 kilohms or

more)

Phones 20mW + 20mW (into 32ohms load)

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)

Dimensions 155 mm (D) x 234 mm (W) x 52 mm (H) Weight 600 g (without batteries)

• 0 dBm = 0.775 Vrms

• Design and specifications subject to change without notice.

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Function Test

Starting in “Test mode”

1) Start up the G1X 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 TP1.

*When set 4 batteries, connect the plug into INPUT connector (J2)

2) All the LEDs of 7 segment LED will be lit.

1. Display (7 segment LED)

1) Make sure that all LEDs are lit brightly enough (indicate “8.8.”) after power on in “Test mode”.

2) Press any key and make sure that all LEDs will be turned off.

2. Module selector

1) Turn the Module selector (VR1) clockwise to “DECAY”.

2) Turn the Module selector (VR1) anticlockwise by one detent. Make sure that the following indications appear on the 7 segment LED.

Module selector 7 segment LED

DECAY 15

REVERB 14

TIME 13

DELAY 12

RATE 11

MODULATION 10

ZNR/AMP 9

EQ_Hi 8

EQ_Mid 7

EQ_Lo 6

GAIN 5

DRIVE 4

COMP/EFX 3

PATCH LEVEL 2

RHYTHM 1

PLAY 0

3) Turn the Module selector (VR1) clockwise by one detent. Make sure that the above values are indicated on the 7 segment LED depending on the

Module selector position. Like figure 1 of the following page, make sure that replaced by right numerical value at a click point and intermediate between click point. In a range of the same click point, numerical value replaced is NG.

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Inspection judgment standard of 16 click setting.

3. Knob

①③⑤～⑮⑰⑲ ※A value changes in

a range of arrow

0->1、2->1

13->14、15->14

Attention at the time

of setting

↓

It must

consciously setting

that center of

allowance.

allowance

⑨

⑩

⑧

7 8

⑦

⑥

②④⑯⑱

※It is NG that a

value changes in a

⑤

It is OK to change with a

dark color.

③

There is a change in

a click

（allowance）＝

It is OK to change with a

dark color.

Figure 1.16 clicks value confirmation position

①

click.

④

②

⑱

⑯

⑪

⑫

⑬

⑭

⑮

⑰

⑲

Turn the [VALUE] knob (SW6) and 7 segment LED indicates “00–FF”. Make sure that indication smoothly changes in the range of “00-FF” and the value changes 1 step by 1 detent.

4. Flash ROM

Press the [BANK UP・TAP] key (SW1). Make sure that “ok” appears on the 7 segment LED.

If any error occurs, “nG” is indicated on the 7 segment LED.

5. Product number

1) Press the FOOT SWITCH [^] (SW5). Make sure that “GP” is indicated on the 7 segment LED.

2) Press the FOOT SWITCH [^] (SW5) again. i) Serial No. 000001 - 022150

Make sure that “87” or “11” are indicated on the 7 segment LED.

ii) Serial No. 022151 –

Make sure that “d2” is indicated on the 7 segment LED.

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6. PEDAL ASSIGN check

Press the PEDAL ASSIGN key, and make sure that the 7segment LED is displayed [SL]. And make sure that the PEDAL ASSIGN LED turns on in the order of “VOL ->WAH

-> DRY ->MOD ->DLY ->REV -> turns off”, whenever the key is pressed.

7. EX Pedal

The 7segment LED is displayed EX PEDAL’s AD value if the PEDAL is moved. Make sure that this EX PEDAL’s AD value is the same as below table.

Expression pedal Values

MIN(raise) 09 - 29

MAX(down) 30 - 80

Pushed all the way

Make sure that difference between MIN and MAX is 20 or more in hex and this value doesn’t

decrease if EX PEDAL is pressed down.

Make sure that all PEDAL ASSIGN LEDs are blinking by pressing down the EX PEDAL stronger.

[VOLUME] LED blinking

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. Make sure that the sounds from both channel of [OUTPUT] jack (J4) are at the same volume, without any noise and improper sound.

If “Mt” or “dL” is indicated on the 7 segment LED, press any key among [BANK UP ・TAP] key (SW1), [STORE] (SW3) and FOOT SWITCH [^] (SW5). Then make sure

that indication is changes to other.

9. SRAM (Delay sound)

1) Press [RHYTHM] (SW2) key and display indicates “dL”.

2) Input sine wave (440Hz, -20dBm) to the [INPUT] jack (J2) and monitor the output from the [OUTPUT] jack (J4) with loudspeakers and oscilloscope. Make sure that the normal signal is output from Rch and the delayed signal is output from the Lch of [OUTPUT] jack (J4) when “dL” is constantly indicated.

10. DSP mute

1) Press FOOT SWITCH [v] (SW4) and display indicates “Mt”.

2) Input sine wave (440Hz, -20dBm) to the [INPUT] jack (J2) and monitor the output from the [OUTPUT] jack (J4) with loudspeakers and oscilloscope. Make sure that there is no output when “Mt” is constantly indicated.

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11. Restoring Factory Defaults

1) Power on in normal mode.

If 7segment LED doesn't blink “AL", power on pressing the "STORE" key. Note) If someone make the operation below, after that 7segment LED never show "AL"

2) Make sure that display blinks “AL”

3) Press [STORE] key (SW3) and display indicates “ok”.

4) The units automatically reboot in normal mode.

12. Sound check 1

1) Connect AC adaptor and the unit’s power on.

2) Make sure that display indicates [A0].

3) Press the FOOT SWITCH [^] (SW5) two times and make sure that display changes

to [A2].

4) Input sine wave (440Hz, -20dBm).

5) Monitor output sound by speaker or oscilloscope and make sure the points below.

Output sound is distorted. Sound doesn’t include abnormal noise, and this sound isn’t abnormal sound.

6) Make sure that frequency of 1 Octave change by moving the EX-PEDAL.

13. Sound check 2

1) Press the FOOT SWITCH [v] (SW4) and make sure that display changes to [A1].

2) Input sine wave (440Hz, -20dBm)

3) Monitor output sound by speaker or oscilloscope and make sure the points below.

Output sound is modulated. Sound doesn’t include abnormal noise, and this sound isn’t abnormal sound.

4) Add mechanical shock to the units a few times and make sure there are no any

problem like noise or sound stop.

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14. Battery

1) Disconnect AC adaptor and set the power supply voltage to 6.0 V.

2) Make sure that “A0” is indicated on the 7 segment LED.

3) Set the power supply voltage to 3.7 V. Make sure that the indication “bt” appears on the 7 segment LED.

4) Set the power supply voltage to 4.6 V. Make sure that the 7 segment LED indication returns to the previous state.

15. Stability

Put the G1X on a surface plate, and push it diagonally. Make sure that there is no remarkable space (less than ±0.3 mm is acceptable).

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Back Up User’s Data

If necessary, back up the user’s effect patch data to avoid an accidental erasing.

Required

· User’s G１X as a transmitter (hereinafter referred to as “the transmitter”)

· Another G１X as a receiver (hereinafter referred to as “the receiver”)

· Jumper wires

1. Remove the bottom plate.

2. Connect “IN” terminal of the transmitter and “OUT” terminal of the receiver.

3. Connect “OUT” terminal of the transmitter and “IN” terminal of the receiver.

4. Connect their ground terminals on the top side of the main PCB, using jumper wires (See below).

Transmitter Receiver

Main PCB top side Main PCB top side

5. Turn on the power of both transmitter and receiver while holding the [STORE] (SW3) and the [BANK UP・TAP] (SW1) keys.

Make sure that the both 7segment LED lit "tr".

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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”. The indication flashes on and off at once. And the transmitter starts to send the data. When sending and receiving finish successfully, and make sure that Transmitter and Receiver’s both 7 segment LED are displayed same check-sum.

8. Turn the both transmitter and receiver off.

9. Take the wires away and attach the bottom plate.

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+ 23 hidden pages

Zoom g1x Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual