Yamaha GA 011589 service manual Test Program, Connection of Terminals

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AG-Stomp

TEST PROGRAM

A. CONNECTION OF TERMINALS

• INPUT

Monaural input

• OUT L/MONO

Balance output (RL 47KΩ)

• OUT R

Balance output (RL 47KΩ)

• HEAD PHONES

Stereo output (RL 33Ω)

• EXP. PEDAL

FC7 or Connect VR of B50K.

JK pin 1: MIN of VR

JK pin 2: MAX of VR

JK pin 3: CENTER of VR

• DIGITAL OUT

Connect the DA converter.

• MIDI IN, MIDI OUT

Connect IN and OUT with the

 

DIN 5P cable.

• POWER SUPPLY

OFF

• AC IN

Connect the AC adaptor

B. CONTENTS OF THE TEST PROGRAM

0: LED Check

1: SW Check

2: VR Check

3: MIDI Check

4: SRAM Check

5: FLASH ROM Check

6: DSP Check

C. STARTING THE TEST PROGRAM AND CHECKING

While pressing the MANUAL, STORE and ROOM switches, turn on the POWER switch. The TEST program will then be started. At this time, check to make sure that the model name “AG.S” is displayed for about 2 seconds. The digit at the left end of the 7-segment LED indicates the test No.

D. SELECTING THE TEST NUMBER

• Using the UP and DOWN switches, select the test number and press the STORE switch to start testing.

E. OPERATION OF THE TEST PROGRAM AND CHECKING 0: LED check

(1) Using the UP and DOWN switches, select “0”. (This step can be skipped if “0” is already selected.)

(2) Press the STORE switch.

• LED segments light up one after another starting with “UP”. When “MIC” is reached, “BANK”, “1”, “2” and “3” light up followed by 7 segments in the following order from the left end. After that, all LED segments light up and go out.(Fig.1)

1 2 3

1

6 7 2

5 3

4 8

Fig.1

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Contents Acoustic Guitar PRE-AMPLIFIER AG-Stomp Specifications Digital SectionAG-Stomp Panel Layout AG-Stomp Pre-AmpSection AG-Stomp Footswitch Section Block Diagram DM 2/2 DM 1/2KEC-54233 Circuit Board Layout Wiring Disassembly Procedure Bottom30PN 1/2 Heat Sink LSI PIN Description HD6413002FP16 XQ375A00 CPUYSS910-S XV988A00 DSP6 Digital Signal Processor AK4520A-VF-E2 XT802A00 DAC & ADC IC Block Diagram AsspNJM5532M XC011A00 Circuit Boards To PN1/2-CN302 To PN1/2-CN303 To PN1/2-CN304 AG-Stomp DM 1/2 Circuit Board AG-Stomp DM 2/2 Circuit Board Pattern side AG-Stomp PN 1/2 Circuit Board To DM1/2-CN103 AG-Stomp PN 1/2 Circuit Board PN 2/2 Circuit Board AG-Stomp Pattern side Test Program Connection of TerminalsSW Check Midi Check Input Output Error Messages E1 Midi Receive Buffer FullOmni ON, Mono Parts List Overall Assembly Description Remarks Electrical Parts V7494000 XZ108A00 RG004470 V7491800 VK701100 PN 1/2 DM 2/2 AG-Stomp Overall Circuit Diagram 3/3 DM