HCD-GTR33/GTR55/GTR77
HCD-GTR33/GTR55/GTR77
19
19
• Circuit Boards Location
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Schematic Diagrams.
Note:
• All capacitors are in
μ
F unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in
Ω
and 1/4 W or less unless otherwise
speci
fi
ed.
•
f
: Internal component.
•
2
: Non
fl
ammable resistor.
•
5
: Fusible resistor.
•
C
: Panel designation.
•
A
: B+ Line.
•
B
: B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
- TC Board -
no mark : TAPE PLAY
( ) : TAPE REC
- Other Boards -
no mark : TUNER (FM/AM)
( ) : CD PLAY
<< >> : TAPE PLAY
[ ] : TAPE REC
< > : USB
{ } : PC
*
: Impossible to measure
• Voltages are taken with VOM (Input impedance 10 M
).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
:
AUDIO
f
:
TUNER
(FM/AM)
d
:
TAPE
PLAY
G
:
TAPE
REC
N
:
MIC
J
: CD PLAY
c
:
DIGITAL
E
:
USB
• Abbreviation
AR :
Argentina
model
E2
: 120V AC area in E model
E4 :
African
model
E51
: Chilean and Peruvian models
MX
: Mexican model
For Printed Wiring Boards.
Note:
•
X
: Parts extracted from the component side.
•
Y
: Parts extracted from the conductor side.
•
f
: Internal component.
•
: Pattern from the side which enables seeing.
(The other layers’ patterns are not indicated.)
• Indication of transistor.
C
B
These are omitted.
E
Q
C E
B
These are omitted.
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi
fi
ed by mark
0
or dotted
line with mark
0
are critical for safety.
Replace only with part number speci
fi
ed.
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
Parts on the pattern face side seen
from the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
• DMB19 board is multi-layer printed board.
However, the patterns of intermediate layers have not
been included in diagrams.
TC board
(For African Model only)
TRANS board
MAIN board
POWER board
DMB19 board
HUB board
LED (GVX) board
included in METER DISPLAY ASSY
(GTR55/GTR77)
included in DISPLAY PANEL (GVX1) ASSY
(GTR33)
VOL board
USB board
MIC board
DISPLAY board
TUNER (FM/AM)
SW (GVX) board
included in METER DISPLAY ASSY
(GTR55/GTR77)
MOTOR DRIVE board
included in METER DISPLAY ASSY
(GTR55/GTR77)
• Abbreviation
AR :
Argentina
model
E2
: 120V AC area in E model
E4 :
African
model
E51 :
Chilean and Peruvian models
MX
: Mexican model
