Korg KRONOS 88 User Manual

MUSIC WORKSTATION
KRONOS&KRONOS X
-61/73/88
SERVICE MANUAL
TABLE OF CONTENTS
ASSEMBLY SKETCH : 2
BLOCK DIAGRAM: 8
SCHEMATIC DIAGRAM: 10
TEST MODE:35
PARTS LIST: 50
APPENDIX
1. PSoC System loading: 53
2. Notes in assembly: 54
3. Add LCD Spacer(-73/88): 66
4. Replacement [VALUE] dial: 67
5. Remodeling to change mother board
from D510MO to D525MW: 68
Issued: Oct. 12, 2012
Ver. 2.0
©2012 KORG INC.
Additional models
KRONOS(K4 ),KRONS X
KRONOS X(Erp)
Page with the revised
2 6: Add Model to Parts List
7: Add page of parts list & AC inlet
9:Block diagram of the models added
14 17,21,24,26: Adding a revised
schematic
33,34: Add page of new PCB.
35: Added model to the title
37: Revised Fan control.
46: Revised Keyboard select
49,48: Add page of Auto Power off
51 53: Added model to parts list.

Korg KRONOS 88 Specifications

General

Set List Mode	Yes
MIDI	In, Out, Thru
Keyboard	88-key RH3 (Real Weighted Hammer Action 3)
Sound Engines	9
Polyphony	Maximum 200 voices (varies by sound engine)
Display	8" TouchView color TFT LCD
Sequencer	16-track MIDI sequencer
Effects	12 Insert FX, 2 Master FX, 2 Total FX
Weight	24.1 kg
Sampling	Open Sampling System
KARMA	Yes
Outputs	L/MONO, R, Headphones
Inputs	Analog 1, 2
External Storage	USB
Controllers	Joystick, Ribbon Controller
USB	USB-A (Ver. 2.0): 2x for external storage/MIDI controllers. USB-B (Ver. 2.0): 1x MIDI/Audio interface
User Sample Banks	16 (128 MB total)

Summary

Schematic Diagrams

Block Diagram

Overall system architecture diagram showing major components and connections.

KLM-2946 / KLM-2945 Circuit Diagrams

Schematics for keyboard scanning circuitry for upper and lower keybeds.

KLM-3002 OMAP PCB Schematics

Detailed circuit diagrams for the OMAP processing board (part 2).

KLM-3003 Circuit Diagram

Schematic for the front panel interface and controls.

KLM-3005 Audio Jack Schematics

KLM-3007 LCD Interface Schematics

Circuitry for connecting and driving the LCD display.

RH-3 88Key Keyboard Circuit Diagram

Schematic for the 88-key keyboard contact and scanning logic.

Test Mode Procedures

Appearance Check

Check physical condition of case, knobs, paintings, and printings for damage.

Preparation and LCD Flicker Check

Insert USB memory, connect MIDI, check LCD stability during Set List page display.

Sound Check

LCD Color Check

Fan Control Check

Panel Switch and LED Check

LCD Visual Checks

Touch Panel Calibration

Calibrate the touch panel by touching specific points as instructed.

Touch Function Check

Verify touch input detection and color changes on screen squares.

Ribbon Controller Check

Joystick X-axis Check

Joystick Y-axis Check

Vector Joystick Check

Rotary Volume and Slide Volume Check

Rotary Encoder Check

Pedal Checks

Keyboard Check - Velocity

Test key touch sensitivity from edge to edge, checking for errors or noise.

Keyboard Check - After Touch

Test after-touch function for C4/C#4 keys and check value ranges.

Auto Power Off Setting and Confirm