Kenwood KRFV 5550 Service Manual

Page 2

r\

KRF7V5050D(K)INT1P 01.2.23 9:33 AM N? 2

Contents

CONTENTS / ACCESSORIES ..............
WIRING DIAGRAM....
PC BOARD ......... ..
SCHEMATIC DIAGRAM .......................................... 1

Accessories

mcobom

+
KRF-V5050D/V5550D/V6050D/V7050D/X9050D

CONTENTS / ACCESSORIES

EXPLODED VIEW ..........
PARTS LIST ...........
SPECIFICATIONS ..........

FM indoor antenna (1)

(T90-0877-05)

Remote control unit (1)

FTEKFSTTEDDDG \
unuu Dunn
nuun unuuD
annn unuuo

AM loop antenna (1)

(T90-0852-05)

Batteries (Re/AA)

*AC plug adapter (1)

(E03-0115-05)

6 ., to the shape of the wall outlet.
I (Accessory only for regions where use is
necessary.)

* Use to adapt the plug on the power cord

Mdel name vs remote controller

Remote controller
MODEL Destinations Parts number Model name Battery cover
KFtF-V5050D Y A70-1 468-1 5 RC-R0511 A09-1178-08
KFtF-V5050D-S MIX A70-1468-15 RC-R0511 A09-1178-08
KRF-V5050D ET A70-1469-05 RC-R0512 A09-1178-08
KFtF-V5050DE E3 A70-1469-05 RC-Ft0512 A09-1178»08
KFtF-V5050D-S E2T2 A70-1469-05 RC-R0512 A09-1178-08
KFtF-V5550D-S MY A70-1507-05 RC-R0617 A09-1178-08
KRF-V6050D Y A70-1 466-1 5 RC-R0615 A09-1178-08
KFtF-V6050D-S MIX A70-1 466-1 5 RC-Ft0615 A09-1178»08
KFtF-V6050D E A70-1467-05 RC-R0616 A09-1178-08
KFtF-V7050D Y A70-1 464-1 5 RC-R0613 A09-1178-08
KRF-V7050D-S MIX A70-1 464-1 5 RC-R0613 A09-1178-08
KFtF-V7050D ET A70-1465-05 RC-Ft0614 A09-1178-08
KFtF-XQOSOD Y A70-1480-05 RC-RO714 A09-1215-08
KFtF-X9050D-S MIX A70-1480-05 RC-R0714 A09-1215-08
KFtF-X9050D ET A70-1481»05 RC-R0715 A09-1215-08
Cautions

condition.

Resetting the Microcomputer

The microcomputer may malfunction (unit cannot be operated,
or shows an erroneous display) it the power cord is unplugged
while the power is ON, or due to some other external iactors.
If this happens, execute the following procedure to reset the
microcomputer and return the unit to its normal operating

With the power cord plugged in, turn the POWER key OFF.
Then, while holding down the ONISTANDBY key, press

POWER key.

I Please note that resetting the microcomputer will clear the contents
of the memory and returns the unit to the state it was in when it left

ztxi

Page 8

r\

\J

KRFVSOSOD(K) INT 1P 01.2.22 3:22 PM «5? 8

/\
\/

KRF-V5050D/V5550D/V6050D/V7050D/X9050D

CIRCUIT DESCRIPTION

4. AK4112AVF u-com interface port

Pin Name Pin No. l/O Function

PD 7 I Power Down Mode Pin When "L" the AK4112AVF is power down and reset.

AUTO 5 0 Non PCM Detect Pin "L":No detect. "H:Detect

F896 17 O 96kHz Sampling Detect Pin "H":fs=88.2kHz or more, "L":fs=54kHz or less.
ERF 18 0 Unlock & Parity Error Output Pin "L":No Error, "H":Error

CSN 25 | Chip Select pin in Serial Mode

CCLK 26 | Control Data Clock Pin in Serial Mode

CDTI 27 I Control Data Input Pin in Serial Mode

CDTO 28 0 Control Data Output Pin in Serial

5. AK4527B u-com interface port

Pin Name Pin No. l/O Function
PDN 17 | Power Down & Reset Pin
OVF 33 0 Analog Overflow Detect Pin
CSN 41 | Chip Select Pin
CCLK 42 | Control Data Clock Pin
CDTI 43 | Control Data Input Pin

6. Test Mode

6-1 Entering the Test Mode
- While pressing the "BAND" key, plug the power cord into AC wall outlet.
6-2 Cancelling the Test Mode
- Initialized and cancel the test mode if pulling out the power code.
6-3 Contents of the Test Mode

6-3-1 Pch CALL UP/DOWN

Key Function
Pch CALL UP
DIMMER O1»02e03---e---39»40
Pch CALL DOWN
INPUT MODE 01e02~03mw - -39k40

6-3-2 10 Steps Switching of P ch Call

Key Function
SET UP Preset Operation
6-3-3 TUNER mute on/off
Key Function
LISTEN MODE TUNER mute on/off

6-3-4 Key Operation
- The following operation is available during the all FL lighting up mode only.(only VFI-507/509/510)

Operation Keys

Display

Function

SOUND

Normal Indication RF receiving frequency is made 422MHz for VR-509/510 and 418MHz for VR-507.

LISTEN MODE

FRONT IR FRONT IR is enabled and remote control is disabled.

SOURCE DIRECT

RF BAND 2 RF receiving frequency is made 428MHz for VR-509/510.