Diagram - Sony RM-NX7000 Service Manual

SECTION 4
DIAGRAMS
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 Ω and
1
/ W or less unless otherwise specified.
4
• % : indicates tolerance.
• C : panel designation.
• A : B+ Line.
• Power voltage is dc 4.5V and fed with regulated dc power supply
from extermal power voltage jack.
• Voltages and waveforms are dc with respect to ground under no-
signal conditions.
no mark : POWER ON
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production toler-
ances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production toler-
ances.
• Circled numbers refer to waveforms.
• IC1 (microcomputer) and IC7 (flash RAM) on Main board cannot
be replaced individually.
Replace it with Main board assembly for service.
* The voltage and waveform of CSP (chip size package) cannot be
measured, because its lead layout is different form that of
conventional IC.
• WAVEFORMS
– MAIN BOARD –
1
IC701 ej XT2
3.2 Vp-p
32.768KHz
VOL/DIV : 1 V AC
TIME/DIV : 20 µ sec
2
IC701 r; X2
3 Vp-p
5MHz
VOL/DIV : 1 V AC
TIME/DIV : 0.1 µ sec
Note on Printed Wiring Board:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• : 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 the
(Side B) pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A) parts face are indicated.
• Main boards is six-layer pritnted board.
However, the patterns of layer 2 to 5 have not been included in this
diagrams.
• IC1 (microcomputer) and IC7 (flash RAM) on Main board
cannot be replaced individually.
Replace it with Main board assembly for service.
9 9
RM-NX7000