XR-H572A/H572W/H572WT/
H573A/H573W
SERVICE MANUAL
SUPPLEMENT-1
File this supplement with the service manual.
Subject : Change of Main Board
(ECN-CSB00374)
When performing service and inspection, check the part number of the main board.
– MAIN BOARD (SIDE A) –
Main board Part No.
Former :1-671-224-11
New :1-674-279-11
SECTION 1 DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•For printed wiring boards.
•X : parts extracted from the component side.
•® : Through hole.
•¢ : internal component.
•b : Pattern from the side which enables seeing.
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BCE |
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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.
•For schematic diagrams.
•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 1/4 W or less unless otherwise specified.
•% : indicates tolerance.
•¢ : internal component.
•C : panel designation.
•U : B+ Line.
•H : adjustment for repair.
•Power voltage is dc 14.4V and fed with regulated dc power supply from ACC and BATT cords.
•Voltage is dc with respect to ground under no-signal
(detuned) condition.
no mark : FM ( ) : AM
<> : PB
: Impossible to measure.
•Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production tolerances.
•Signal path. F : FM f : AM
E: PB
• (( |
)) : Page of service manual. |
<<>> : Page of supplement-1.
– 2 –
XR-H572A/H572W/H572WT/H573A/H573W
1-1. PRINTED WIRING BOARD — MAIN SECTION —
• Semiconductor
Location (Side A)
Ref. No. |
Location |
D1 |
F-2 |
D2 |
F-2 |
D20 |
G-7 |
D301 |
F-7 |
D303 |
E-6 |
D802 |
C-6 |
D804 |
D-6 |
D806 |
D-14 |
D807 |
C-7 |
D811 |
L-3 |
D901 |
C-8 |
D904 |
H-4 |
D905 |
C-8 |
D906 |
D-6 |
IC1 |
F-2 |
IC302 |
E-10 |
IC601 |
K-7 |
IC800 |
E-13 |
IC802 |
I-10 |
IC900 |
D-12 |
Q4 |
F-2 |
Q20 |
G-4 |
Q21 |
G-5 |
Q300 |
G-7 |
Q501 |
J-4 |
Q800 |
L-2 |
Q802 |
D-13 |
Q803 |
L-4 |
Q806 |
L-4 |
Q807 |
E-13 |
Q900 |
F-5 |
Q901 |
D-12 |
Q902 |
F-6 |
Q903 |
I-4 |
Q904 |
C-7 |
Q905 |
C-13 |
Q906 |
H-5 |
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– 3 – |
– 4 – |
• Semiconductor
Location (Side B)
Ref. No. |
Location |
D300 |
D-4 |
D302 |
H-9 |
D500 |
I-4 |
D501 |
J-3 |
D800 |
C-13 |
D801 |
C-13 |
D803 |
D-13 |
D808 |
J-13 |
D809 |
J-13 |
D810 |
J-13 |
D812 |
J-12 |
D813 |
K-11 |
D814 |
D-14 |
D900 |
C-12 |
D902 |
D-13 |
D907 |
D-12 |
IC304 |
A-10 |
IC401 |
I-11 |
IC502 |
J-4 |
Q1 |
G-2 |
Q2 |
G-2 |
Q303 |
G-7 |
Q500 |
K-4 |
Q502 |
I-4 |
Q503 |
I-4 |
Q801 |
B-12 |
Q804 |
L-4 |
((Page 28))
XR-H572A/H572W/H572WT/H573A/H573W
13 |
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1 |
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GRY |
GRY |
GRY |
GRY |
GRY |
GRY |
GRY |
GRY |
GRY |
YEL |
ORG |
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M901 |
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CAPSTAN/REEL |
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MOTOR |
REEL BOARD |
RED |
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BLK |
RED |
1 |
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2 |
S901
TAPE OPERATION
ROTARY SLIDE
SWITCH
1–670–227– 11
((Page 27))
– 5 – |
– 6 – |
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