Page 1
ORDER NO.
RRV1979
AMPLIFIER
HTV-A2
÷ Refer to the service manual RRV1957 for HTV-A1/KUCXJ.
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).
Type
KUCXJ AC120V
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)
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.
Model
HTV-A2
Power Requirement
Powered Subwoofer
HTV-SW2 (service manual RRV1970)
Amplifier
HTV-A2 (this service manual)
Remarks
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
T–ZZE JUNE 1998 Printed in Japan
Page 2
HTV-A2
CONTRAST OF MISCELLANEOUS PARTS
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 Ω = 56 × 10
47k Ω = 47 × 10
0.5 Ω = R50 ...................................................................... RN2H Â 5 0 K
1 Ω = 1R0 ......................................................................... RS1P 1 Â 0 K
Ex. 2 When there are 3 effective digits (such as in high precision metal film resistors).
5.62k Ω = 562 × 10
7 CONTRAST TABLE
HTV-A2/KUCXJ and HTV-A1/KUCXJ are constructed the same except for the following:
1
= 561................................................... RD1/4PU 5 6 1 J
3
= 473 .................................................. RD1/4PU 4 7 3 J
1
= 5621 ........................................... RN1/4PC 5 6 2 1 F
Ref.
Mark Symbol and Description
No.
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
P5–11 NSP Heat Sink ANH7076 ANH7079
P5–26 NSP Name Label AAX7614 AAX7637
NSP Fuse Card Not used AAX2374 ∗4
HTV-A1/KUCXJ HTV-A2/KUCXJ
Part No.
∗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.
Remarks
2
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7 CONTRAST OF PCB ASSEMBLIES
AFPS ASSY
AWU7079 and AWU7073 are constructed the same except for the following:
Mark
Symbol and Description
C101, C102 ACH7007 ACH1249
AWU7073
(4700µF/DC63V) (4700µF/DC71V)
Part No.
PAMP ASSY
AWU7080 and AWU7074 are constructed the same except for the following:
Mark Symbol and Description
AWU7074
Part No.
AWU7079
AWU7080
HTV-A2
Remarks
Remarks
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
3
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