Note For Printed Wiring Boards And Schematic Diagrams - Sony HCD-GRX9900 Service Manual

7-5.

NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS

(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• p : parts mounted on the conductor side.
• ¢ : internal component.
• b : Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B) the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Side A) the parts face are indicated.
• Indication of transisitor.
Q
B C E
These are omitted.
Q
B C E
These are omitted.
C
Q
These are omitted.
B E
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in and 1 / W or less unless otherwise
4
specified.
¢
• : internal component.
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
Note: The components identified by mark ! or
dotted line with mark ! are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages are taken with a VOM (Input impedance 10 M ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : TUNER (FM/AM)
E : PLAYBACK (DECK A)
d : PLAYBACK (DECK B)
G
: RECORD
J
: CD PLAY (ANALOG OUT)
c : CD PLAY (DIGITAL OUT)
N
: MIC INPUT
• Abbreviation
AED : North European model
AR : Argentine model
E2 : 120 V AC Area in E model
E3 : 240 V AC Area in E model
EA : Saudi Arabia model
G : German model
MY : Malaysia model
MX : Mexican model
SP : Singapore model
– 27 –
• Circuit Boards Location
TRANS board
CD SW board
PANEL board
SENSOR board
CONNECTOR board
AUDIO board
SUB TRANS board
(RXD9)
TUNER PACK
MAIN board
MOTOR (TURN) board
BD board
MOTOR (SLIDE) board
LEAF SW board
– 28 –