Components Description; Switch Unit (X16-2960-10); Electric Unit (X34-3340-1X) - Kenwood Ez700SR Service Manual

Ez700SR/Ez900HDS

SWITCH UNIT (X16-2960-10)

Ref. No. Application / Function
IC1 LCD Driver
IC2 Remote Control IC
Q2 REMO ON SW
Q3 Key Illumination SW (Red)
Q4 Key Illumination SW (Green)
Q5 Dimmer Control

ELECTRIC UNIT (X34-3340-1x)

Ref. No. Application / Function
IC1 Power Amp
Main µ-com
IC101
IC102 2 input OR logic x 4
IC103 Reset
IC104 E2PROM
IC105 E2PROM
IC202 regulator
IC203 DC/DC IC
IC204 DC/DC IC
IC205 regulator
IC206 regulator
IC207 regulator
IC208 regulator
IC301 Digital IF decoder
IC302 DSP
IC303 128M SDRAM
IC304 8M Serial flash ROM
IC402 Audio decoder
IC403 Digital Interface Receiver
Sub µ-com
IC501
IC502 E2PROM
IC503 Level shift
Q1 Power SW
Q2-7 Mute
Q8 Power SW
Q9,10 Mute SW
Q12 Control SW
Q13 Power SW
Q202 Power SW
Q203 Power SW
Q204 Control SW
4

COMPONENTS DESCRIPTION

Drives LCD
Controls the unit
The power supply of IC2 is turned on when base level goes "L"
Lights Red key-illumination when base level goes "H"
Lights Green key-illumination when base level goes "H"
Lights LCD Back Light when base level goes "H"
50W x 4
Panel, CD mechanism, IC402 control, power supply management, etc.
3 input, 2 output mute signal, L output: mute
IC101 ROM correction
IC101 security
FM/AM tuner 5V power supply
Servo, FM/AM_3.3V or SIRIUS_1.5V output control
5V, 1.8V output control
Backup_5V, ILM, audio, DC/DC_IC power supply, P_con, P_ant
SIRIUS_3.3V power supply
FM/AM tuner 8.5V power supply
Backup_3.3V power supply
A/D, Digital IF decoder, audio D/A, audio selector
Digital FM/AM signal processing
IC302 external RAM
IC302 boot ROM
"IC2v2" audio selector / filter / E-vol, etc.
For rewriting IC501 program, digital signal format conversion IC
A301,302,IC301,302,403 control and power supply management
Tuner adjustment data storage, ROM correction
3.3V → 5V level conversion
ON: DSI on / OFF: DSI off
ON: mute on / OFF: mute off
ON: panel_5V on / OFF: panel_5V off
ON: mute on / OFF: mute off
ON: ILLUMI power supply on / OFF: ILLUMI power supply off
ON: ILLUMI power supply on / OFF: ILLUMI power supply off
ON: SW_5V on / OFF: SW_5V off
ON: ANT_7V on / OFF: ANT_7V off
ON: IC204 ch1 off / OFF: IC204 ch1 on
Operation / Condition / Compatibility
Operation / Condition / Compatibility