
5
KDC-MP738U/W7541U
/W7541UY/X792/X8009U
COMPONENTS DESCRIPTION
Ref. No.
Application / Function
Operation / Condition / Compatibility
Q350,351
4VPRE+B
When Q353’ go ON, 4VPRE+B is outputs. (~12V)
Q352
4VPRE+B Protect
When 4VPRE+B is overcurrent, Q352 turn Q350 off.
Q353,354
4VPRE+B SW
When Q354’ Base goes Hi, Q353 is ON.
Q370,372~376
Pre-out mute SW
When a base gose Hi, Pre-out is set to mute.
Q371,377
Pre-out mute driver
When a base gose Lo, mute driver is turned on.
Q400,401
AM+B SW
When Q401’ base gose Hi, AM+B is outputs.
Q500,501
FL+B SW
When PON-ILL (
μ
-CON) goes ON, FL+B outputs 65V.
Q650
X15 LED SW
When DSI Port LOW, LED of X15 are ON
Q702,703
3.3V_SW_for_IC700 (
fl
ash_type)
When base of Q702 is “H”, 3.3V_On.
Q704
Decoder SRAM standby control
Buffer
When base of Q704 is “L”, SRAM_STBY.
Q705
CD “LOE_LIM” SW_Buffer
When base of Q705 is “H”, Loading_End.
●
SWITCH UNIT (X16-624x-xx)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
ROM IC
FLASH ROM IC
Graphics data included
IC3
ROM CORRECTION
For program correcting emergency (EEP_ROM)
IC4
PANEL
μ
-COM
FL VddSupply (ON/OFF) Encoder Key LedSW (ON/OFF) is controlled by IC4
IC6
REMOTE CONTROL IC
Remote control receiver
IC7
BUFFER IC
It is change into 3.3V from 5V
IC8
BUFFER IC
It is change into 5V from 3.3V
IC9
BUFFER IC
For Control ED1
IC10
2.5V REGULATOR
The power supply for 2.5V
IC11
3.3V REGULATOR
The power supply for 3.3V
Q1~5
LED DRIVER
It is controlled by IC4
Q6
POWER ON/OFF SWITCH OF IC1
It is controlled by IC4
Q11,13
POWER ON/OFF SWITCH OF ED1
(65V)
It is controlled by IC4
●
CD PLAYER UNIT (X32-6130-00)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC3
4ch BTL Driver
Driver for focusing & tracking coil, driver for sled & spindle motor, and operation for
disc loading & ejection.
IC4
Servo DSP with built-in Audio DAC
With built-in MP3/WMA/AAC decoder and 1M-bit-SRAM.
IC5
D1.5V REG.
Power supply for digital 1.5V.
IC6
D3.3V REG.
Power supply for digital 3.3V.
IC11
BU1.5V REG.
Power supply for back-up 1.5V.
Q1
APC (Auto Power Control)
Drives LD (Laser Diode).
Q13
Inverter
Inverts ZDET signal.
D2
Laser Diode Protection
Prevents reverse bias which is applied to laser. Laser destruction prevention.
D3,4
Static Electricity Countermeasure
Prevents malfunction by static electricity.