Kenwood VR-4900 User Manual

KRF-V7773D/V7773D-B/V9993D
6
CIRCUIT DESCRIPTION
3. Test Mode
3-1 Entering the Test Mode
While pressing the "INPUT SELECTOR DOWN" key, plug the power cord into AC wall outlet.
3-2 Cancelling the Test Mode
Initialized and cancel the test mode if pulling out the power cord.
Not initialized and cancel the test mode if the power switch turns off.
3-3 Contents of the Test Mode
3-3-1 Key Operation
The following operation is available when the FL is all lighting up mode only.
KEY OPERATION DISPLAY
SOUND Set up the RF frequency to 411.3MHz. RF 417.3MHz
LISTEN MODE Set up the RF frequency to 414.3MHz. RF 414.3MHz
INPUT MODE Set up the RF frequency to 411.3MHz. RF 417.3MHz
SET UP Indicates Tuner destination on the FL. EX. TYPE E1 TYPE E2
MEMORY Changed dimmer off/1/2cyclically. All FL light on ALL FL light off
BAND KEY Indicates the u-com version. EX. Ver . XXXXXX-X
(Main) u-com
µPD784215-GF570
PANEL KEY
FL DRV
uPD780204
FL
POWER,
INPUT UP/DOWN KEY
SP. RLY
MUTING
SELECTOR IC
X11, IC3
X13, IC81
X13, IC22
X11, IC5
X13, IC82
X25, IC4
X11, IC1
X25, IC3
VOL. IC
X11
IC301~304
X13, IC71
X25, IC1
X25, ED1
X08, IC40
X13, IC1/5/7/8
X05, IC2
NJU71311
SELECTOR IC
NJU71312
SELECTOR IC
NJU71313
SUB u-com
uPD784036
VIDEO
PANEL DOOR
DESTINATION
SELECTOR IC
BA7649
LCD REMOTE
TRANSMIT IC
uPD17215
PLL for Remocon
Model
LV2105V
TUNER UNIT
LC72131
VOLUME IC
TC9459F
VOLUME IC
TC9459F
VOLUME IC
TC9459F
VOLUME IC
TC9459F
TONE CONTROL IC
TC9184
PROTECTION
POWER RLY
IR RECEIVER
SL16
UART
IR/RF Front/Rear
switch
IR/RF Front/Rear
switch
ROTARY
ENCODER
RELAY CONTROL
FAN
4. Main Microprocessor : uPD784215-GF570 (X13, IC23)
4-1 Main Microprocessor Periphery Block Diagram

Kenwood VR-4900 Specifications

General

Brand	Kenwood
Model	VR-4900
Category	Receiver
Language	English