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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.

: Chip transistor of abbreviation (E, C, B)

• ((        )) : Page of service manual.

BCE

– 2 –

SECTION 1

DIAGRAMS

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 

 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 M

).

Voltage variations may be noted due to normal produc-
tion tolerances.

• Signal path.

F

: FM

f

: AM

E

: PB

• ((        )) : Page of service manual.

<<     >> : Page of supplement-1.

SUPPLEMENT-1

File this supplement with the service manual.

SERVICE MANUAL

Subject : Change of Main Board

When performing service and inspection, check the part number
of the main board.

(ECN-CSB00374)

XR-H572A/H572W/H572WT/

H573A/H573W

– MAIN  BOARD (SIDE A) –

Main board Part No.
Former :1-671-224-11
New

:1-674-279-11

Summary of Contents for XR-H572A

Page 1: ...r 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 ar...

Page 2: ......

Page 3: ... 5 6 XR H572A H572W H572WT H573A H573W Page 28 Page 27 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 Semiconductor Location Side B Ref No Location ...

Page 4: ... TUX 006 2Z E 7 8 1 2 SCHEMATIC DIAGRAM MAIN SECTION Refer to page 31 of service manual for IC Block Diagrams XR H572A H572W H572WT H573A H573W Page 9 ...

Page 5: ... 9 10 XR H572A H572W H572WT H573A H573W Page 8 Page 30 ...

Page 6: ...1 124 589 11 ELECT 47uF 20 16V C22 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C23 1 126 157 11 ELECT 10uF 20 16V C24 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C25 1 124 584 00 ELECT 100uF 20 10V C29 1 126 160 11 ELECT 1uF 20 50V C30 1 126 160 11 ELECT 1uF 20 50V C31 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C32 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C33 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C34 1 163...

Page 7: ...0V C803 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C804 1 107 877 11 ELECT 1000uF 20 10V C806 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C807 1 126 964 11 ELECT 10uF 20 50V C808 1 107 877 11 ELECT 1000uF 20 10V C809 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C810 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C811 1 163 021 11 CERAMIC CHIP 0 01uF 10 50V C813 1 163 009 11 CERAMIC CHIP 0 001uF 10 50V C814 1 163 00...

Page 8: ...5 1 10W R7 1 216 081 00 METAL CHIP 22K 5 1 10W R8 1 216 061 00 METAL CHIP 3 3K 5 1 10W R9 1 216 210 00 RES CHIP 3 3K 2 1 8W R10 1 216 065 00 RES CHIP 4 7K 5 1 10W R11 1 216 049 11 RES CHIP 1K 5 1 10W R12 1 216 049 11 RES CHIP 1K 5 1 10W H572A H572W H572WT R12 1 216 057 00 METAL CHIP 2 2K 5 1 10W H573A H573W R13 1 216 049 11 RES CHIP 1K 5 1 10W H572A H572W H572WT R13 1 216 057 00 METAL CHIP 2 2K 5 ...

Page 9: ...2A H572W H572WT R643 1 216 821 11 METAL CHIP 1K 5 1 16W R644 1 216 821 11 METAL CHIP 1K 5 1 16W R645 1 216 821 11 METAL CHIP 1K 5 1 16W R646 1 216 097 00 RES CHIP 100K 5 1 10W H572WT R647 1 216 246 00 RES CHIP 100K 5 1 8W EXCEPT H572WT R648 1 216 845 11 METAL CHIP 100K 5 1 16W R649 1 216 845 11 METAL CHIP 100K 5 1 16W R650 1 216 821 11 METAL CHIP 1K 5 1 16W R651 1 216 246 00 RES CHIP 100K 5 1 8W R...

Page 10: ...12 11 RES CHIP NETWORK 1 0K 3216 RB605 1 236 908 11 RES CHIP NETWORK 10K 3216 RB801 1 233 412 11 RES CHIP NETWORK 1 0K 3216 RB802 1 233 576 11 RES CHIP NETWORK 100 RB803 1 233 576 11 RES CHIP NETWORK 100 THERMISTOR POSITIVE TH901 1 810 940 11 THERMISTOR POSITIVE TUNER TU1 A 3282 044 A TUNER UNIT TUX 006 2Z E VIBRATOR X1 1 577 126 61 VIBRATOR CRYSTAL 7 2MHz X600 1 767 993 31 VIBRATOR CRYSTAL 3 68MH...

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