— 3 —
BLOCK DIAGRAM
Power AMP
LA4635A
IC202
RESET
IC3, Q24
ROM(4MB)
MR27V3202F
IC42
Main Volume
RXDI
RXDI, TXDO
TXDO
HEADPHONE
Keyboard
LCD Controller
ML-9040-B02GA
IC1 (SCH-M649-LCA PCB)
Button
LCD
FI0~7
SI0~7
KC0~7
MD0~15
RAM(1MB)
CY62126DV30LL55ZI
IC18
Monitor Output
Controller
IC15(SPG200A-HL091)
IC43(MR27V802F)
Keyboard LED Controller
UPD65881GK-1019-ETA
IC27
VD5(5.3V)
VE5(5V)
VA5(5.2V)
VC9(9.0V)
VCP(9.0V)
Power Supply
Q2 ~ D9
D4 ~ D7
MD0~15
SP
SP
RESET
C-TVSYG
SYSRSTB
TV-RXD
TV-TXD
Sustain Jack
Monitor Jack
MA1~21
MA1~17
MPU
ML6763-NNTC-116
IC1
MIC
MIC VR
Filter
NJM2068DD
IC3
Filter
NJM2068DD
IC1
(M649-MAA2 PCB)
Summary of Contents for LK-90TV
Page 1: ...ELECTRONIC KEYBOARD LK 90TV JUN 2004 LK 90TV Ver 1 Jun 2005 INDEX...
Page 8: ...6 PRINTED CIRCUIT BOARDS M649 MAIN PCB Bottom View Top View...
Page 9: ...7 M649 SUB1 PCB M649 SUB2 PCB Bottom View Top View Bottom View Top View...
Page 10: ...8 M649 CONSOLE PCB Top View Bottom View...
Page 12: ...10 M474 LED1 PCB Top View Bottom View M474 LED2 PCB Top View Bottom View...
Page 14: ...12 M6111T KEY1 PCB M6111T KEY2 PCB Top View Bottom View Top View Bottom View...
Page 24: ...22 SCHEMATIC DIAGRAMS M649 MAIN PCB 1 2...
Page 25: ...23 M649 MAIN PCB 2 2...
Page 26: ...24 M649 SUB PCB 1 2...
Page 27: ...25 M649 SUB PCB 2 2...
Page 28: ...26 M649 CONSOLE PCB...
Page 29: ...27 M649 LCD PCB...
Page 30: ...28 CSM446 LED PCBs...
Page 31: ...29 M6111T KEY1 PCB...
Page 32: ...30 M6111T KEY2 PCB...
