Diagrams; Circuit Board Location - Sony MHC-RG60 Service Manual

SECTION 6

DIAGRAMS

THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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
4
specified.
• ¢ : internal component.
• C : panel designation.
Note:
The components identified by mark ! or
dotted line with mark ! are critical for
safety.
Replace only with part number specified.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
no mark : FM
( ) : CD
[ ] : TAPE
• 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
: FM
f
: AM
E : PB (DECK A)
d : PB (DECK B)
G
: REC (DECK B)
J
: CD
c : digital out
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Indication of transistor.
C
Q
These are omitted.
B E
Q
B C E
These are omitted.

6-1. CIRCUIT BOARD LOCATION

ADDRESS SENSOR board
DRIVER board
SUB TRANS board
TRANS board
PANEL board
KEY board
• WAVEFORMS
– BD BOARD –
1
3
IC101 yj IC101 ra
CD PLAY MODE
CD PLAY MODE
6.4Vp-p
59ns
(16.9344MHz)
2 4
IC101 ta IC101 el
CD PLAY MODE CD PLAY MODE
400nsec/div 1.2Vp-p
19 19
MOTOR board
VIDEO OUT board
BD board
SENSOR board
POWER AMP board
– MAIN BOARD – – PANEL BOARD –
1 1
IC102 wf STOP MODE
4.1Vp-p
approx 200mVp-p
222ns
(4.5MHz)
2
IC401 qd STOP MODE
approx 170mVp-p
4.0Vp-p
63ns
(16.0MHz)
3
IC401 qa STOP MODE
3.0Vp-p
31 µ s
(32.768kHz)
HCD-RG60
SURROUND board
MAIN board
IC701 4 STOP MODE
5.3Vp-p
200ns
(5MHz)