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For U.S.A., Canada, Europe, Asia, China, Hong Kong & Taiwan R.O.C. model
Hi-Fi Component
SERVICE MANUAL
MODEL
AVR-1602/682
AV SURROUND RECEIVER
Forum Tec
: 972 9 7964119,
972 68 645477, : 972 9 7965674 : [email protected]
Some illustrations using in this service manual are slightly different from the actual set.
14-14, AKASAKA 4-CHOME, MINATO-KU, TOKYO 107-8011 JAPAN Telephone: 03 (3584) 8111
X0116 1174 NC 0111
AVR-1602/682
SCHEMATIC DIAGRAMS(5/7)
1 2 3 4 5 6 7 8 9 10 11
A
B
C
D
E
F
+ B LINE - B LINE
G
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
SIGNAL LINE
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(5/7)
MAIN P.W.B. UNIT
H
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
46
AVR-1602/682
SCHEMATIC DIAGRAMS(5/7)
1 2 3 4 5 6 7 8 9 10 11
A
A C
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
B D
+ B LINE - B LINE
B
C
D
E
F
G
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
SIGNAL LINE
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(5/7)
MAIN P.W.B. UNIT
H
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
46
SCHEMATIC DIAGRAMS(5/7)
1 2 3 4 5
AVR-1602/682
6
7
8
9
10
11
A
B
C
D
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
WARNING: CAUTION:
Parts marked with this symbol Use ONLY replacement parts re
Before returning the unit to the c leakage current check or (2) a li current exceeds 0.5 milliamps, o of the power card is less than 46
WARNING:
DO NOT return the unit to the cu corrected.
E
F
+ B LINE - B LINE SIGNAL LINE
G
ave critical characteristics. nded by the manufacture.
, make sure you make either (1) a assis resistance check. If the leakage esistance from chassis to either side , the unit is defective.
SCHEMATIC DIAGRAMS(5/7)
MAIN P.W.B. UNIT
H
until the problem is located and
46
AVR-1602/682
SCHEMATIC DIAGRAMS(6/7)
1 2 3 4 5 6 7 8 9 10 11
A
B
C
D
E
F
+ B LINE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
G
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
- B LINE
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(6/7)
FRONT P.W.B. UNIT TACT S/W P.W.B. UNIT H/P & POWER S/W P.W.B. UNIT
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
H
47
AVR-1602/682
SCHEMATIC DIAGRAMS(6/7)
1 2 3 4 5 6 7 8 9 10 11
A
A C
B D
B
C
D
E
F
+ B LINE - B LINE
G
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(6/7)
FRONT P.W.B. UNIT TACT S/W P.W.B. UNIT H/P & POWER S/W P.W.B. UNIT
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
H
47
SCHEMATIC DIAGRAMS(6/7)
1 2 3 4 5
AVR-1602/682
6
7
8
9
10
11
A
B
C
D
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
E
F
+ B LINE
G
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
- B LINE
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(6/7)
FRONT P.W.B. UNIT TACT S/W P.W.B. UNIT H/P & POWER S/W P.W.B. UNIT
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
H
47
AVR-1602/682
SCHEMATIC DIAGRAMS(7/7)
1 2 3 4 5 6 7 8 9 10 11
A
B
C
D
E
F
G
+ B LINE SIGNAL LINE
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(7/7)
TUNER P.W.B. UNIT
H
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
48
AVR-1602/682
SCHEMATIC DIAGRAMS(7/7)
1 2 3 4 5 6 7 8 9 10 11
A
A C
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
B D
+ B LINE SIGNAL LINE
B
C
D
E
F
G
WARNING:
Parts marked with this symbol have critical characteristics. Use ONLY replacement parts recommended by the manufacture.
CAUTION:
Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power card is less than 460kohms, the unit is defective.
SCHEMATIC DIAGRAMS(7/7)
TUNER P.W.B. UNIT
H
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
48
SCHEMATIC DIAGRAMS(7/7)
1 2 3 4 5
AVR-1602/682
6
7
8
9
10
11
A
B
C
D
NOTICE
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM M=1,000,000 OHM ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASUERD AT MO SIGNAL INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
WARNING: CAUTION:
Parts marked with this symbol ha Use ONLY replacement parts recommen
Before returning the unit to the customer leakage current check or (2) a line to cha current exceeds 0.5 milliamps, or if the re of the power card is less than 460kohms
WARNING:
DO NOT return the unit to the customer corrected.
E
F
G
+ B LINE SIGNAL LINE
have critical characteristics. commended by the manufacture.
ustomer, make sure you make either (1) a ne to chassis resistance check. If the leakage r if the resistance from chassis to either side 0kohms, the unit is defective.
SCHEMATIC DIAGRAMS(7/7)
TUNER P.W.B. UNIT
H
stomer until the problem is located and
48