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XM-GTR2202
THIS NOTE IS COMMON FOR PRINTED WIR-
ING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
for schematic diagrams:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in and
1
/
specifi ed.
Note:
The components identi-
fi ed by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specifi ed.
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Power voltage is dc 14.4V fed with regulated dc power
supply from +12V and REM terminals.
• Voltages is dc respect to ground under no-signal
conditions.
• Voltages are taken dc with a VOM (Input impedance
10M
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 number refer to waveforms.
• Signal path.
: AUDIO
F
for printed wiring boards:
• X : Parts extracted from the component side.
•
: Pattern from the side which enables seeing.
• Waveform
1
IC901 5 (CT)
20
1 V/DIV, 10 sec/DIV
10
SECTION 3
DIAGRAMS
W or less unless otherwise
4
Note:
Les composants identifi és
par une marque 0 sont
critiques pour la sécurité.
Ne les remplacer que par
une pièce portant le nu-
méro spécifi é.
3.1 Vp-p
Note for Replacement of the Transistors
•
The transistors Q111, 112, 114, 115, 117, 118, 211, 212, 214, 215,
217 and 218 have two different ranks: P rank and Y rank.
The rank of these transistors need to be selected properly
according to each channel. When replacing any one of these
transistors, check its rank and replace with the appropriate
transistor of the same rank.
Q111,114,117,
Rank
211,214,217
2SC3856-P
P
(Part No.: 6-552-405-01)
2SC3856-Y
Y
(Part No.: 8-729-303-89)
DISCRIMINATION:
• IC Block Diagram
IC901 TL594INSR (MAIN Board (1/2))
16
15
14
13
REF 5V
ERROR
ERROR
0.1V
1
2
3
4
Q112,115,118,
212,215,218
2SA1492-P
(Part No.: 6-552-404-01)
2SA1492-Y
(Part No.: 8-729-303-86)
C3856: 2SC3856
A1492: 2SA1492
P: RANK P
Y: RANK Y
12
11
10
9
Q1
Q2
OSC
5
6
7 8
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