Kenwood KRFV 7773 DB Service Manual

Page 2

KRFEV7773D(K) COVER1,1P( 5/10/00 6:23 PM N? 2 /\

KRF-V7773D/V7773D-B/V9993D

CONTENTS / ACCESSORIES / CAUTIONS

Contents
CONTENTS / ACCESSORIES / CAUTIONS ............. 2 PC BOARD .............................................................. 17
CONTROLS ........................... ...3 SCHEMATIC DIAGRAM .. 30

....e1
....63
...65

DISASSEMBLY FOR REPAIR
CIRCUIT DESCRIPTION.

EXPLODED VIEW ............
....5 PARTS LIST .......
..15 SPECIFICATIONS

ADJUSTM ENT ...............

WIRING DIAGRAM ................................................... 16

Accessories

I N
Remote control unit Batteries AM Loop Antenna FM Antenna

(A70-1313-05): RC-R0912

(A70 1344 05)- RC R0910 @ (T900852'05 (T90-0855-05)

Battery cover(A09-1166-08)

Remote control unit (PowerTouch)
(A70-1350-05): RC-R1011 AC plug adaptor .............. (1)
(A70-1351-05): RC-R1010 (E03-0115-05)

Use to adapt the plug on

fly the power cord to the
shape of the wall outlet.
(Accessory only for

regions where use is

r\
\/

necessary.)
Battery cover(A09-f177-08)
Pen(WOt-0976-08)
L J
Cautions
r \
®
DU nomv DE] DOLBY sunnoumn| I-DCD
DIGITAL PRo-Loelc
Manufactured underlicense from Dolby Laboratories. HDCDn High Definition Compatible Digitalu

Dolby , Pro Logic , AC-3 .andthe double»D symbol are
trademarks of Dolby Laboratories. Confidential Unpub-
lished Works. ' 19924997 Dolby Laboratories. All rights
reserved.

and Pacific MicrosonicsTM are either registered trade-
marks or trademarks of Pacific Microsonics, Inc. in
the United States and/or other countries. HDCD sys-
tem manufactured under license from Pacific Micro-
D I G l T A '7, sonics, Inc. This product is covered by one or more
of the following: IN the USA: 5,479,168, 5,638,074,
5,640,161, 5,808,574, 5,838,274, 5,854,600,
5,864,311, 5,872,531, and in Australia: 669114. Other
SURROUND patents pending.

Manufactured under license from Digital Theater Sys-
tems, Inc. US Pat. No. 5,451,942 and other world-
wide patents issues and pending. DTS and DTS
Digital Surround are trademarks of Digital Theater
Systems, Inc. ' 1996 Digital Theater Systems, Inc.
All rights reserved.

Page 15

KRFEV7773D(K) COVER1,1P( 5/10/00 6:24 PM N? 15

+
KRF-V7773D/V7773D-B/V9993D

ADJUSTMENT

Adjustment of Sub Color and Contrast (X35, VR1, VR2)

N ITEM INPUT OUTPUT ALIGNMENT ALIGNMENT
°' SETTINGS SETTINGS POINTS FOR F'G-
PAL Connect a component video (Adjust an ampIitude
1 SUB COLOR 75% COLOR BAR output(Y) to oscilIoScope VR2 of video SignaI.) FIGJ
(NO SET UP) with 759. 0.825Vp , p
PAL Connect a component video (Adjust an ampIitude
2 CONTRAST 75% COLOR BAR output(Cb,Cr) to oscilloscope VRI of video SignaI.) FIG.2
(NO SET UP) with 759. :0525Vp , p
INSTRUMENTS CONNECTION
PATTERN
GENERA- RECEIVER OSCILLOSCOPE
TOR DUMMY
75 5'?
INPUT SIGNAL : 75% COLOR BAR SIGNAL
PARA METER WHITE VELLO CVAN GREEN MAGENTA RED BLUE
LUMINANCE LEVEL INF]; 525 465 368 308 217 157 60
CHROMA LEVEL g: 0 470 664 620 620 664 470
CHROMA pHAsE N 167 283 241 61 103 347
(deg) -v 193 77 119 299 257 1a
525 P.C.B (X35~2230-10)
0 0 I:I
VR2 VR1 CNI
J I
/\ ,
L / 0.825Vp p
J 2
J 3
C N 2
| I
ADJUSTMENT OUTPUT SIGNAL :
FIG.1 Y LEVEL (VR 2)
A
I
[1825me I
I
7
I;
V
FIG.2 Cb LEVEL (VR1) Cr LEVEL (VR1)
"I'_'_'_'_'_'_'_'_'_'_'_'_' '_'_'_'_'_'_'_'_'_'_'_'_'":1-
0525me
4 _
4
V

15