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ORDER NO.
PIONEER ELECTRONIC CORPORATION
4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153-8654, Japan
PIONEER ELECTRONICS SERVICE, INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V . Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 501 Orchard Road, #10-00 Wheelock Place, Singapore 238880
PIONEER ELECTRONIC CORPORATION 1998
AMPLIFIER
RRV1979
T­ZZE JUNE 1998 Printed in Japan
HTV-A2
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
Model
HTV-A2
Power Requirement
Remarks
KUCXJ
AC120V
This product does not operate normally by itself. Please connect it to the Control Center HTV-C2
for operating inspection. If operation confirmation for the unit by itself can not be avoided, refer to
" 7.2 DIAGNOSIS " on the service manual RRV1957.
The HTV-A2 is a part of the Powered Subwoofer HTV-SW2. The Powered Subwoofer HTV-SW2 is a
part of the Hometheater System HTV-2.
Hometheater System
Control Center
HTV-2
HTV-C2 (service manual RRV1978)
(service manual RRV1977)
Powered Subwoofer
HTV-SW2 (service manual RRV1970)
Amplifier
HTV-A2 (this service manual)
÷ Refer to the service manual RRV1957 for HTV-A1/KUCXJ.


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HTV-A2
2
CONTRAST OF MISCELLANEOUS PARTS
7 CONTRAST TABLE
HTV-A2/KUCXJ and HTV-A1/KUCXJ are constructed the same except for the following:
PCB ASSEMBLIES
MOTHER ASSY
AWM7368
AWM7370
P5­ 1
AFPS ASSY
AWU7073
AWU7079
1
P5­ 2
PAMP ASSY
AWU7074
AWU7080
1
P5­ 3
PT PRI ASSY
AWU7075
AWU7081
2
P5­ 4
PT SEC ASSY
AWU7076
AWU7082
3
EXTERIOR
P5­ 6
Power Transformer (T1)
ATS7212
ATS7213
P5­ 7
Fuse (5A, FU1)
REK1083
Not used
P5­ 7
Fuse (6.3A, FU1)
Not used
REK1085
P5­11
NSP
Heat Sink
ANH7076
ANH7079
P5­26
NSP
Name Label
AAX7614
AAX7637
NSP
Fuse Card
Not used
AAX2374
4
Ref.
No.
Remarks
HTV-A1/KUCXJ
HTV-A2/KUCXJ
Part No.
Mark
Symbol and Description
NOTES :
÷ Parts marked by " NSP " are generally unavailable because they are not in our Master Spare Parts List.
÷ The
mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
÷ Reference Nos. indicate the pages and Nos. in the service manual for the base model.
÷ When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex. 1
When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by
J = 5%, and K = 10%).
560
= 56 × 101= 561 ................................................... RD1/4PU 5 6 1 J
47k
= 47 × 10 3 = 473 .................................................. RD1/4PU 4 7 3 J
0.5
= R50 ...................................................................... RN2H Â 5 0 K
1
= 1R0 ......................................................................... RS1P 1 Â 0 K
Ex. 2
When there are 3 effective digits (such as in high precision metal film resistors).
5.62k
= 562 × 10 1 = 5621 ........................................... RN1/4PC 5 6 2 1 F
1 Refer to " CONTRAST OF PCB ASSEMBLIES " .
2 Although AWU7075 and AWU7081 are different in part number, they have the same service parts.
3 Although AWU7076 and AWU7082 are different in part number, they have the same service parts.
4 For PT PRI ASSY.


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HTV-A2
3
7 CONTRAST OF PCB ASSEMBLIES
AFPS ASSY
AWU7079 and AWU7073 are constructed the same except for the following:
Mark
Symbol and Description
Remarks
Part No.
C101, C102
ACH7007
ACH1249
(4700
µF/DC63V) (4700µF/DC71V)
AWU7073
AWU7079
PAMP ASSY
AWU7080 and AWU7074 are constructed the same except for the following:
Mark
Symbol and Description
Remarks
Part No.
IC1101
STK407-040B
STK407-050B
Q1101
2SC5198(P)
2SC5200(P)
Q1102
2SA1941(P)
2SA1943(P)
R1110
RD1/4PM112J
RD1/4PM911J
R1112
RD1/4PMF680J
RD1/4PMF910J
R1209, R1210
RS1/10S122J
RS1/10S102J
AWU7074
AWU7080