Schematic Diagrams And Printed Wiring Boards - Sony CPD-E220 Service Manual

5-4. SCHEMATIC DIAGRAMS AND PRINTED
WIRING BOARDS
Note:
• All capacitors are in µF unless otherwise noted. (pF: µµF)
Capacitors without voltage indication are all 50 V.
• Indication of resistance, which does not have one for rating
electrical power, is as follows.
Pitch: 5 mm
Rating electrical power 1/4 W (CHIP : 1/10 W)
• All resistors are in ohms.
f
• : nonflammable resistor.
F
• : fusible resistor.
f
• : internal component.
p
• : panel designation, and adjustment for repair.
• All variable and adjustable resistors have characteristic curve B,
unless otherwise noted.
e
• : earth-ground.
E
• : earth-chassis.
• All voltages are in V.
• Readings are taken with a 10 M digital multimeter.
• Readings are taken with a color-bar signal input.
• Voltage variations may be noted due to normal production
tolerances.
• : Can not be measured.
*
• Circled numbers are waveform references.
s
• : B + bus.
S
• : B – bus.
]
• When replacing components identified by , make the
necessary adjustments indicated. (See page 3-1)
• When replacing the part in below table, be sure to perform the
related adjustment.
]
Part Replaced ( )
HV Regulator D board IC502, T501 (FBT)
Circuit Check
HV Hold-down D board D538, R521,
T501 (FBT)
Circuit Check
Beam Current D board IC901, R949,
Protector Circuit T501 (FBT)
Check
• Divided circuit diagram
One sheet of D board circuit diagram is divided into four
sheets, each having the code D-a to D-d . For example, the
destination ab1 on the D-a sheet is connected to ab1 on the
D-b sheet.
a b 1
Ref. No.
Circuit diagram division code
Note: The components identified by shading and mark
0 are critical for safety. Replace only with part
number specified.
Note: Les composants identifiés par un tramé et une
marque 0 sont critiques pour la sécurité. Ne les
remplacer que par une pièce portant le numéro
spécifié.
Schematic diagram
5-7
H
Board
(1) Schematic Diagram of H Board
1 2
A
B
LED701
LT6463-23-D51
P701 (POWER)
4P
MENU 1
ORANGE/LED 2
GREEN/LED 3
GND 4
TO D-a BOARD
CN901
C
D
H
(USER CONTROL)
(h)
USER CONTROL
l l l l l
3 4
5 6
R701 R706 R709
R705
2.15k 3.83k 17.4k
6.19k
1% 1%
SW701
MENU
4 3
5 2
6
1
B-SS3562<NH.>-H..-EPS05
5-8
7
R702
10.2k
1%