Ez700SR/Ez900HDS
4
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SWITCH UNIT (X16-2960-10)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
LCD Driver
Drives LCD
IC2
Remote Control IC
Controls the unit
Q2
REMO ON SW
The power supply of IC2 is turned on when base level goes “L”
Q3
Key Illumination SW (Red)
Lights Red key-illumination when base level goes “H”
Q4
Key Illumination SW (Green)
Lights Green key-illumination when base level goes “H”
Q5
Dimmer Control
Lights LCD Back Light when base level goes “H”
●
ELECTRIC UNIT (X34-3340-1x)
Ref. No.
Application / Function
Operation / Condition / Compatibility
IC1
Power Amp
50W x 4
IC101
Main
µ
-com
Panel, CD mechanism, IC402 control, power supply management, etc.
IC102
2 input OR logic x 4
3 input, 2 output mute signal, L output: mute
IC103
Reset
IC104
E2PROM
IC101 ROM correction
IC105
E2PROM
IC101 security
IC202
regulator
FM/AM tuner 5V power supply
IC203
DC/DC IC
Servo, FM/AM_3.3V or SIRIUS_1.5V output control
IC204
DC/DC IC
5V, 1.8V output control
IC205
regulator
Backup_5V, ILM, audio, DC/DC_IC power supply, P_con, P_ant
IC206
regulator
SIRIUS_3.3V power supply
IC207
regulator
FM/AM tuner 8.5V power supply
IC208
regulator
Backup_3.3V power supply
IC301
Digital IF decoder
A/D, Digital IF decoder, audio D/A, audio selector
IC302
DSP
Digital FM/AM signal processing
IC303
128M SDRAM
IC302 external RAM
IC304
8M Serial flash ROM
IC302 boot ROM
IC402
Audio decoder
“IC2v2” audio selector / filter / E-vol, etc.
IC403
Digital Interface Receiver
For rewriting IC501 program, digital signal format conversion IC
IC501
Sub
µ
-com
A301,302,IC301,302,403 control and power supply management
IC502
E2PROM
Tuner adjustment data storage, ROM correction
IC503
Level shift
3.3V
→
5V level conversion
Q1
Power SW
ON: DSI on / OFF: DSI off
Q2-7
Mute
ON: mute on / OFF: mute off
Q8
Power SW
ON: panel_5V on / OFF: panel_5V off
Q9,10
Mute SW
ON: mute on / OFF: mute off
Q12
Control SW
ON: ILLUMI power supply on / OFF: ILLUMI power supply off
Q13
Power SW
ON: ILLUMI power supply on / OFF: ILLUMI power supply off
Q202
Power SW
ON: SW_5V on / OFF: SW_5V off
Q203
Power SW
ON: ANT_7V on / OFF: ANT_7V off
Q204
Control SW
ON: IC204 ch1 off / OFF: IC204 ch1 on
COMPONENTS DESCRIPTION