Pioneer VSX-52TX Service Manual - Page 119

Discharging resistors, Wattage W

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5 6 ¶ Discharging resistors In a case when one resistor is used Wattage (W) Recommended constant to be used (ohms) Miscellaneous Three-wire lead Three-core connector 3 3300 2 4700 1 10000 ADX7404 RKP1751 Photo 1: Discharging ±VL (SP/PS Assy: C2051, C2052) 7 • Discharging resistors 8 Modified ADX7404 wire with 3-pin connector A Modified RKP1751 3-pin connector Photo 2: Discharging ±VL inside the POWER AMP-L and R Assys Discharging of C4403 and C4404 of the POWER AMP-R Assy is also possible by reconnecting the connector to B CN2001 of the POWER AMP-R Assy while keeping the discharging resistor connected to CN2002 of the SP/PS Assy connected. CN2002 SP/PS Assy Photo 3: Discharging +VH (TRANS 2-1 Assy: C2213) SP/PS Assy C Discharging C4401 and C4402 inside the POWER AMP L Assy on the CN2002 connector side. Photo 4: Discharging -VH (TRANS 2-1 Assy: C2214) D TRANS 2-1 Assy TRANS 2-1 Assy 0 Reassemble the unit by following Steps 1-5 in reverse. • When reconnecting the parallel wires to the connectors or reinserting the connectors, be careful of the direction. If a wire is connected to the wrong side of the connector, or if the five wires are not connected correctly, the resistors may be damaged. • Direction of wires VSX-52TX 5 6 7 E F 119 8

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VSX-52TX
119
5
6
7
8
5
6
7
8
C
D
F
A
B
E
• Discharging resistors
Modified ADX7404 wire with
3-pin connector
Modified RKP1751 3-pin connector
Photo 1: Discharging
±
VL (SP/PS Assy: C2051, C2052)
Photo 2: Discharging
±
VL inside the POWER AMP-L and R Assys
Discharging of C4403 and C4404 of the POWER AMP-R
Assy is also possible by reconnecting the connector to
CN2001 of the POWER AMP-R Assy while keeping the
discharging resistor connected to CN2002 of the SP/PS
Assy connected.
Photo 3: Discharging +VH (TRANS 2-1 Assy: C2213)
Photo 4: Discharging -VH (TRANS 2-1 Assy: C2214)
• Direction of wires
TRANS 2-1 Assy
TRANS 2-1 Assy
SP/PS Assy
SP/PS Assy
Discharging resistors
In a case when one resistor is used
0
Reassemble the unit by following Steps
1
-
5
in reverse.
• When reconnecting the parallel wires to the connectors or
reinserting the connectors, be careful of the direction.
If a wire is connected to the wrong side of the connector,
or if the five wires are not connected correctly, the
resistors may be damaged.
Wattage (W)
3
2
1
Recommended constant to be used (ohms)
3300
4700
10000
Miscellaneous
Three-wire lead
ADX7404
Three-core connector
RKP1751
Discharging C4401 and C4402 inside
the POWER AMP L Assy on the
CN2002 connector side.
CN2002