Sony EVO-720P - Page 59

4-2. PRINTED WIRING BOARDS AND
SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in
each block.)
For printed wiring boards:
© O- : indicates a lead wire mounted on the component
ide.
© @—_ ; indicates a lead wire mounted on the printed side.
2885); Pattern from the side which enables seeing.
© Circied numbers refer to waveforms.
© @ — : Through hole.
. : Pattern of the rear side.
Caution:
Pattern face side: Parts on the pattern face side seen from
(Conductor Side) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
{Component Side) the pattern face are indicated,
For schematic diagram:
© Caution when replacing chip parts.
New parts must be attached after removal of chip.
Be careful not to heat the minus side of tantalum capa-
citor, because it is damaged by the heat.
© All resistors are in ohms, 1/4W (Chip resistors: 1/10W)
unless otherwise noted. :
kQ: 10002, M2: 1000k2.
© All capacitors are in uF uniess otherwise noted. pF: uaF
SOV or less are not indicated except for electrolytics and
tantalums, ;
© All variable and adjustable resistors have characteristic
curve B, unless otherwise noted. i
© -Ge} : nonflammable resistor.
© SUF : fusible resistor. -
@ ([_] : panel designation. ees
° a : internal component. ai
© (7 Vadjustment for repair.
omen B+ line. 7 Z eee
ome: BH line. cs
© Voltages.are de between measurement points and ground
unless otherwise noted.
© Readings are taken with a color-bar signal input.
.
Readings are taken with a digital multimeter (DC10M&).
© Voltage: variations may be noted due to normal produc-
tion tolerances.
> =: IN/OUT direction of B line (+, —}.
3: Impossible to measure the voltage at the marked
points.
© Circled numbers refer to waveforms.
oe
When indicating parts by refer-
ence number, please include the
board name.
fine with mark are critical for safety.
Note: The sinteen ere by mark A\ or dotted
Replace only with part number speci
>
a48
—100—
: REC Y/CHROMA Signal
: PB Y/CHROMA Signal
: REC AUDIO Signal
: PB AUDIO Signal
FR-30P (HEAD AMP/FLYING ERASE), RP-52P (REC/PB HEAD AMP) SCHEMATIC DIAGRAN
~ Ref. No. FR-30P BOARD: 1,000 series, RP-S2P BOARD: 10,000 series —
REC/PB DECK
FR-30P BOARD
no mark: REC/PB mode
Ce REE made
Stes Ay Dek antes igh OF PB mode
ie tis pt Sreraifs =>
voce nero p—t se nfs
vege ngs p—t rane
vioeo HEAD 2 LP 2cH Cy) fit
1 FE,R (x) [ra] i
t FER (y)}i5]
te if wo
HEAD FEF (xt | =>
sh on Det Ao a Pek 4 ‘eno [9]
—101-—
0
SE-7 BOARD
nore.
(See page 129.)
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{PEAK eT It
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4 FEON fei
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cmoz
REC VIDEO AF
ono
PB VIDEO AF
REC Pew RF
PCM
RES SV
TP PCw REC
TP video REC
T
2
3
a
PB Pcw AF {S
fe
7
a
3
RP AF REC.
3P PCM REC
RP _RF_S¥P
Re PS wODE
TW CHG
COMP_SYNC
AF DET Sw
Ea
‘SP cH SHORT
TP cH SHORT [19] +
cacy
49
Es
GAIN cont [23
nc. fed
cHECK Pm
‘COUPA CONT
ai08,09
RAMP GENERATOR
Nec
10 SE
extaa
SP v REC,
SPP REC
a
teow
UP v REC
PP REC
RP PB ODE
eros
chassis GND
formes aie cea —
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