System Control & Servo Circuit Oo - Sanyo VHR-279E Service Manual

SYSTEM CONTROL & SERVO CIRCUIT
IC301( 1/2) MPU
SYSTEM CONTROL , OSD
TIMER , TUNING CONTROL
03003.03010 37
ALWAYS 5¥V POWER DOWN DET eed pover vown mi, 43092
38 14, 32MHz
40
X3001
37 ai ol B32KHZ
PS CTL POWER SAVE CONTROL xo
(TO PW-a)
POWER CTL 10) povER CTL
(TO PW-A)
INITIALIZE 25
RESET
+ 10 ®
LOADING LOADING MOTOR (wn) | HOTOR OR IVER
63 -VUR-279E. VHR-289E
4 © ALTOFF H Fh-——F—eaLTOFF_H
REC H REC H
44
rau ty PBL IC301(1/2)
NORM A CTL NORM A CTL Ba SERVO <(uNto1po! roa
uecHANI Sis
e] SW DATA 0 YCA MUTE Be YCA MUTE
a
Hone evr ROTARY S¥ DATA 1 A MUTE A MUTE
TO VA-A V LOCK P
cH s¥
12
85 TRACK ING|
SY DATA 2 63081 fa
a3008
49 93062
H. A. SW
or AMP SW
[WAFEFORM SHAPE] 83085 vA.
1\ ; WAFEFORM SHAPE T REEL P.
r Pen so eur | :;
oe oe a
TAKE-UP >
Meee Wks ee
REC GIL
ROTARY
DRIVER SENSOR
ay.
:
tu csync bee c SYNC
a FR
SUPPLY Tx WAFEFORM SHAPE S REEL P.
REEL { ) A
88
ge -- =H,
WAVEFORM
23
TAPE TOP'SENSOR (s
i — FSS IN _)VHR-269SP. 279SP
CTL- SHAPER || RF SWP
36 -=-O>
Val
f————FAV_CTL JEXPECT VHR-269SP, 279SP
39
TAPE END LED a AF SWP
_ 12 CLK
©) 12C DATA
TAPE END SENSOR
TO VA-A
8
FL START SW g a) CL START rae cue [Op PLL CLK.S CL
ERASE PREVENTION
12c DATA ott
: Ata
SWITCH
Sie eS 7
12e CLK |
= FF — - > 120 DATA |
To TB-1
RRTO4 4
5 33 U.P.
RECEIVER, eau REMOCON D/A CONVI
|
KEY IN OWKEY IN 3
OPERATION 12c Rom re eae sv DRUM
TW PHASE CTL
KEY-MATRIX
C+)
34 L. Pel
D/A CONVI
DRUM
SEG 9 SPEED CTL
ATO001 sce |
7
SYNC SEP
DISPLAY cs c SYNC
\ (FLD) CLK
_—<—— DATA OUT
GRID DATA IN
HEATER+
FLD ORIVE
AND KEY SCAN
3 IN 1 TUNER (TU/IF BLOCK)
ANT A OUT CY
y OUT CV
21
rae. TU AUDIO NORM(TO AD-A)
() ¥1DE0 OUT{TO ¥A-A)
5 6 7 8 9 10 11 12 13 14 15 16 coal