Pioneer HTV-A1 Service Manual

AMPLIFIER

HTV-A1

THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

ORDER NO.

RRV1957

Type

KUCXJ AC120V

The HTV-A1 is a part of the Powered Subwoofer HTV-SW1. The Powered Subwoofer HTV-SW1 is a
part of the Hometheater System HTV-1.

Hometheater System Control Center
HTV-1 HTV-C1 (service manual RRV1960)
(service manual RRV1968)

This product does not operate normally by itself. Please connect it to the Control Center HTV-C1
for operating inspection. If operation confirmation for the unit by itself can not be avoided, refer to
“7.2 DIAGNOSIS”.

Model

HTV-A1

Power Requirement

Powered Subwoofer
HTV-SW1 (service manual RRV1969)

Amplifier
HTV-A1 (this service manual)

Remarks

CONTENTS

1. SAFETY INFORMATION....................................2

2. EXPLODED VIEWS AND PARTS LIST .............4

3. SCHEMATIC DIAGRAM..................................... 6

4. PCB CONNECTION DIAGRAM .......................14

5. PCB PARTS LIST.............................................20

6. ADJUSTMENT.................................................. 22

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

7. GENERAL INFORMATION .............................. 22

7.1 IC ................................................................ 22

7.2 DIAGNOSIS................................................24

7.3 BLOCK DIAGRAM...................................... 26

8. PANEL FACILITIES AND SPECIFICATIONS

....................................................................28

T–DZE MAY 1998 Printed in Japan

HTV-A1

1. SAFETY INFORMATION

This service manual is intended for qualified service technicians; it is not meant for the casual
do-it-yourselfer. Qualified technicians have the necessary test equipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may
void the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a qualified service technician.

WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.

NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols (fast operating fuse) and/or (slow operating fuse) on PCB indicate that replacement parts
must be of identical designation.

REMARQUE
(POUR MODÈLE CANADIEN SEULEMENT)
Les symboles de fusible (fusible de type rapide) et/ou (fusible de type lent) sur CCI indiquent que les
pièces de remplacement doivent avoir la même désignation.

(FOR USA MODEL ONLY)

1. SAFETY PRECAUTIONS

The following check should be performed for the

continued protection of the customer and service
technician.

LEAKAGE CURRENT CHECK

Measure leakage current to a known earth ground
(water pipe, conduit, etc.) by connecting a leakage
current tester such as Simpson Model 229-2 or
equivalent between the earth ground and all exposed

metal parts of the appliance (input/output terminals,
screwheads, metal overlays, control shaft, etc.). Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured must not exceed 0.5 mA.

Reading should
not be above

0.5 mA

Earth ground

Device
under
test

Also test with plug
reversed
(Using AC adapter
plug as required)

Leakage

current

tester

Test all exposed
metal surfaces

AC Leakage Test

ANY MEASUREMENTS NOT WITHIN THE LIMITS
OUTLINED ABOVE ARE INDICATIVE OF A PO­TENTIAL SHOCK HAZARD AND MUST BE COR­RECTED BEFORE RETURNING THE APPLIANCE
TO THE CUSTOMER.

2. PRODUCT SAFETY NOTICE

Many electrical and mechanical parts in the appli­ance have special safety related characteristics. These
are often not evident from visual inspection nor the
protection afforded by them necessarily can be ob­tained by using replacement components rated for
voltage, wattage , etc. Replacement parts which have
these special safety characteristics are identified in
this Service Manual.
Electrical components having such features are
identified by marking with a
on the parts list in this Service Manual.
The use of a substitute replacement component which
does not have the same safety characteristics as the
PIONEER recommended replacement one, shown in
the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product Safety is continuously under review and
new instructions are issued from time to time. For
the latest information, always consult the current
PIONEER Service Manual. A subscription to, or ad­ditional copies of, PIONEER Service Manual may be
obtained at a nominal charge from PIONEER.

on the schematics and

2

HTV-A1

3

HTV-A1

2. EXPLODED VIEWS AND PARTS LIST

EXTERIOR

23

23

23

20

23

19

23

16

16

23

23

23

26

23

9

24

2

9

21

18

18

D

C

23

23

14

B

A

5

11

23

22

23

7

22

12

18

15

25

3

13

4

15

17

1

9

8

23

D

C

6

A

B

10

4

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.
Screw adjacent to mark on the product are used for disassembly.

EXTERIOR PARTS LIST

Mark No. Description Part No.

1 AFPS ASSY AWU7073
2 PAMP ASSY AWU7074
3 PT PRI ASSY AWU7075
4 PT SEC ASSY AWU7076
5 JACK ASSY AWU7077

6 Power Transformer (T1) ATS7212
7 Fuse (5A, FU1) REK1083
8 AC Power Cord PDG1057
9 Push Rivet AEC7149

NSP 10 Chassis ANA7076

NSP 11 Heat Sink ANH7076

12 Binder ZCA-SKB90BK
13 Barrier AEC7135
14 Heat Protector AEC7136
15 Mini Card Spacer AEC7143

HTV-A1

16 Mica Sheet AEE7010
17 Strain Relief CM-22C

NSP 18 PCB Holder PNW2174

19 Bonnet Case AZN7709
20 65 Label ORW1069

21 Screw ABA-258
22 Screw ASZ40P060FMC
23 Screw BBZ30P080FMC
24 Cushion AEB7123
25 Screw IBZ30P080FMC

NSP 26 Name Label AAX7637

5

1

HTV-A1

3. SCHEMATIC DIAGRAM

3.1 OVERALL CONNECTIONS

A

B

23

PAMP ASSY

D

(AWU7074)

4

E

JACK ASSY

(AWU7077)

C

D

AFPS ASSY

A

(AWU7073)

6

1234

5

678

HTV-A1

Note : When ordering service parts, be sure to refer to "EXPLODED VIEWS and P AR TS LIST" or "PCB PAR TS LIST".

A

B

B

PT SEC ASSY

(AWU7076)

AC 120V

60 Hz

AC POWER CORD
PDG1057

T1
POWER TRANSFORMER
ATS7212

C

C

PT PRI ASSY

(AWU7075)

D

7

5

6

7

8

1

•

23

HTV-A1

3.2 AFPS, PT SEC AND PT PRI ASSEMBLIES

4

SIGNAL ROUTE

: AUDIO SIGNAL (L ch)
: AUDIO SIGNAL (SW ch)

A

BALANCED IN

E-VOLUME & TONE CONTROL, SUBWOOFER LEVEL

E

CN1105

1

2

+9.0

B

+4.5

(VREF)

I / O EXPANDER

Q1003, Q1004 :

AC RELAY DRIVER

0.0

3

+0.7

0.0

C

0.0

0.0

LPF 180Hz

L / R MIX

D

IC8001 (BU2092F)

No.

Pin Name

1 GNDD 0.0 V 0.0 V 0.0 V
2 DATA 5.0 V 5.0 V 5.0 V
3 CLK 0.0 V 0.0 V 0.0 V
4 LCK 0.0 V 0.0 V 0.0 V
5 PWON 5.1 V 0.0 V 0.0 V
6 SPRY 4.7 V 0.0 V 0.0 V
7 ACRY 5.1 V 0.0 V 0.0 V

8 MUTE 0.0 V 5.1 V 0.0 V
17 OE 0.0 V 0.0 V 0.0 V
18 VDD 5.1 V 5.1 V 5.1 V

STAND BY

ON MUTE

8

A

1234

5

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE NO. 4911.25 MFD, BY
LITTELFUSE INK. FOR IC101 AND IC102(AEK7010).

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE NO. 491001 MFD, BY
LITTELFUSE INK. FOR IC103(AEK7009).

678

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE NO. 491010 MFD, BY
LITTELFUSE INK. FOR IC110 AND IC111(AEK7022).

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE NO. 491.250 MFD, BY
LITTELFUSE INK. FOR IC121 AND IC122(AEK7002).

HTV-A1

L

BUFFER AMP

HPF 180Hz

AFPS ASSY

A

(AWU7073)

A

D

CN1101

40Hz +9.5dB

HPF

D

CN1102

B

0.0

4700/63 ACH7007

ACH7007

4700/63

–17.9

+35.1

Q1001, Q1002 :

PROTECTION (SPEAKER)

RELAY DRIVER

+44.1

+35.1

–44.1

+17.7

B

T 1 : POWER TRANSFORMER

ATS7212

AC POWER CORD
PDG1057

5A/125V

FU 1 : REK1083

C

AC 120V
60 Hz

E

CN1104

C

D

POWER SUPPLY

• NOTE FOR FUSE REPLACEMENT

CAUTION -

FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE WITH SAME TYPE AND RATINGS ONLY.

5

PT SEC ASSY

(AWU7076)

6

7

PT PRI ASSY

(AWU7075)

A

B C

9

8

1

T

S

HTV-A1

3.3 PAMP ASSY

23

4

A

+35.0

–35.0

FRONT ch

POWER AMPLIFIER

+34.0

S

A

J1001

1.2k

1.2k

Q1301,
Q1302 :

OVER LOAD

B

DETECTOR

–34.0

A

J1002

+12.0

C

–11.7

Q1111 :

MUTE

4

D

5

1.1k

R1110

68

6

7

–43.9

+43.9

SW ch DI

10

1234

5

678

HTV-A1

1.2k

STK407-040B

CAUTION : FOR CONTINUED PROTECTION AGAINST RISK OF FIRE,
REPLACE ONLY WITH SAME TYPE NO. 491.500 MFD, BY
LITTELFUSE INK. FOR IC1201 (AEK7005).

Q1201, Q1202 : MUTE

PROTECTION CIRCUIT

SIGNAL ROUTE

PAMP ASSY

D

(AWU7074)

A

: AUDIO SIGNAL (L ch)
: AUDIO SIGNAL (SW ch)

B

2SC5198

2SA1941

–44.0

SW ch DISCRETE POWER AMP

Q1307,
Q1308 :

DC DETECTOR

OVER LOAD

DETECTOR

C

D

11

5

6

7

8

HTV -A1

Waveforms

Note: The encircled numbers denote measuring
point in the schematic diagram.

IC6001-Pin1 (DATA) 0.5 V/div 1 mS/sec

1

IC6001-Pin42 (CLK) 0.5 V/div 1 mS/sec

2

2

1

Measurement condition : volume Min =1

IC8001-Pin4 (LCK) 0.5 V/div 1 mS/sec

3

IC6001-Pin42 (CLK) 0.5 V/div 1 mS/sec

1

3

1

GND

GND

GND

GND

Q1109-Base 20 mV/div 5 mS/sec

5

Measurement condition :
SW ch output signal f =100Hz, 1W

Q1105-Collector 0.5 V/div 5 mS/sec

6

GND

GND

Measurement condition : volume Min =1

Q1110-Emitter 50 mV/div 5 mS/sec

4

Measurement condition :
SW ch output signal f =100Hz, 1W

GND

Measurement condition :
SW ch output signal f =100Hz, 1W

Q1106-Collector 0.5 V/div 5 mS/sec

7

Measurement condition :
SW ch output signal f =100Hz, 1W

GND

12

1

3.4 JACK ASSY

234

HTV -A1

A

JACK ASSY

E

(AWU7077)

A

CN1005

B

TO CONTROL CENTER HTV-C1

1

A

CN1004

SIGNAL ROUTE

: AUDIO SIGNAL (L ch)

13

2

3

4

C

D

1

23

HTV -A1

4. PCB CONNECTION DIAGRAM

A

NOTE FOR PCB DIAGRAMS :

1. Part numbers in PCB diagrams match those in the schematic
diagrams.

2. A comparison between the main parts of PCB and schematic
diagrams is shown below.

Symbol In PCB
Diagrams

BCE

BCE

D

Symbol In Schematic
Diagrams

BCEBCE

BCE

DGGSS

BCE

DGS

Part Name

Transistor

Transistor
with resistor

Field effect
transistor

4

3. The parts mounted on this PCB include all necessary parts for
several destinations.
For further information for respective destinations, be sure to
check with the schematic diagram.

4. View point of PCB diagrams.

Connector

Capacitor

SIDE A

P.C.Board

Chip Part

SIDE B

B

4.1 PT SEC ASSEMBLY

C

Resistor array

3-terminal
regulator

B

PT SEC ASSY

POWER TRANSFORMER

A

CN101

A

SIDE A

IC110,IC101

IC111,IC103,IC102

(ANP7253-C)

CN102

SIDE B

D

(ANP7253-C)

14

1234

1

234

4.2 PT PRI AND JACK ASSEMBLIES

C

PT PRI ASSY

POWER TRANSFORMER

NEUTRAL

HTV -A1

A

SIDE A

AC POWER CORD

TO

CONTROL CENTER

HTV-C1

FROM

CONTROL CENTER

HTV-C1

LIVE

E

JACK ASSY

B

(ANP7253-C)

C

A

CN1004

A

CN1005

(ANP7253-C)

D

15

1

2

3

4

1

B

23

HTV -A1

4.3 AFPS AND PAMP ASSEMBLIES

4

SIDE A

A

Q1102,Q1309

Q1107,Q1106

B

Q1103,Q1109,Q1110

Q1101,Q1105,Q1108,Q1111

TO SW SPEAKER

Q1104

Q1112

D

PAMP ASSY

E

CN1104

E

CN1105

Q1310,Q1306,Q1303

Q1304,Q1305

Q1202

C

IC1201

Q1201
Q1204

IC1101

Q1203

Q1208,Q1307

D

Q1302

Q1301

(ANP7253-C)

16

1234

5

678

HTV -A1

B

J101

B

J102

SIDE A

A

AFPS ASSY

IC105,Q102
IC121,Q104,Q103

IC122

Q105
IC106

Q101

A

B

4
5

Q6051,Q6052

C

Q1005

Q1002
Q1004

Q301

Q303

Q302

(ANP7253-C)

D

17

5

6

7

8

A

HTV -A1

IC4502,IC4501

IC4503

1

A

AFPS ASSY

23

4

B

C

IC6001

Q106

SIDE B

IC6031,6501

IC6701,IC7101

Q1001

D

Q1003

IC8001,Q8001

(ANP7253-C)

18

1234

5

678

HTV -A1

D

PAMP ASSY

SIDE B

A

B

C

D

(ANP7253-C)

19

5

6

7

8

HTV-A1

5. PCB PARTS LIST

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.
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%).

1

560 Ω = 56 × 10
47k Ω = 47 × 10

= 561................................................... RD1/4PU 5 6 1 J

3

= 473 .................................................. RD1/4PU 4 7 3 J

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 1 = 5621 ........................................... RN1/4PC 5 6 2 1 F

Mark No. Description Part No.

LIST OF PCB ASSEMBLIES

MOTHER ASSY AWM7368

AFPS ASSY AWU7073
PAMP ASSY AWU7074
PT PRI ASSY AWU7075
PT SEC ASSY AWU7076
JACK ASSY AWU7077

A

AFPS ASSY

SEMICONDUCTORS

IC121, IC122 (250mA/125V) AEK7002
IC8001 BU2092F
IC6001 M62419FP
IC4501–IC4503, IC6031, IC6501, IC6701 NJM4558MD
IC7101 NJM4558MD

IC105 NJM7812FA
IC106 NJM7912FA
Q104 2SA933S
Q102 2SB1237X
Q1002, Q1005, Q103 2SC1740S

Q6051, Q6052 2SC1740S
Q101 2SD1858X
Q105 2SD1858X
Q1001, Q1003, Q106 DTA143EK
Q8001 DTC124EK

Q1004 DTC143ES
D103–D106 11ES2
D1001–D1004, D8001, D8002 1SS254
D101 D3SBA20 (B)
D102 D5SBA20 (B)

D6051 MTZJ10B
D8003 MTZJ2.7B
D107 MTZJ5.6B
D6001, D6002, D8004–D8006 MTZJ8.2B

RELAYS

RY1002 ASR7001
RY1001 ASR7009

CAPACITORS

C101, C102 (4700 µF/DC63V) ACH7007
C103, C104 (3300 µF/DC50V) ACH7056

Mark No. Description Part No.

C6013, C6014 CCSQCH470J50
C7102, C7103 CEANPR47M50
C6011, C6012, C6015–C6018 CEAT100M50

C6031, C6032, C6051, C6053 CEAT100M50
C6701, C6702, C7104, C7105, C8006 CEAT100M50
C6004 CEAT101M10
C6052 CEAT101M16
C105 CEAT102M25

C6054 CEAT221M10
C6503, C6504 CEAT2R2M50
C106 CEAT331M25
C107–C109, C111, C8001, C8007 CEAT470M25
C110, C6019, C6020 CEAT4R7M50

C8003–C8005 CKSQYB102K50
C6005, C6006 CKSQYB472K50
C6021, C6022, C6025, C6026 CKSQYB682K50
C6023, C6024 CKSQYB683K25
C4501–C4506, C6001, C6003, C8002 CKSQYF103Z50

C1001–C1004, C216, C217 CKSQYF104Z50
C6060 CKSQYF473Z50
C205–C208 CQMA223K2E
C6704 CQMBA104J50
C6501, C6502, C6703 CQMBA473J50

RESISTORS

R8004 RD1/2PM222J
R1001, R1002 RD1/4PM100J
R101 RD1/4PU182J
R102 RD1/4PU220J
R8005 RD1/4PU273J

R6051 RD1/4PU821J
R4505–R4512 RS1/10S1001F
R110 RS3LMF151J
Other Resistors RS1/10S J

OTHERS

CABLE HOLDER (9P) 51052-0900

CABLE HOLDER (13P) 51063-1305
J1002 JUMPER WIRE D15A13-150-2651
CN1005 9P PLUG KM200TA9
CN1004 SOCKET 6-P KP250NA6

CN101 CONNECTOR (11P) KPE11
CN102 CONNECTOR (5P) KPE5
KN101, KN102 EARTH METAL FITTING VNF1084

20

HTV-A1

Mark No. Description Part No. Mark No. Description Part No.

PAMP ASSY

D

SEMICONDUCTORS

IC1201 (500mA/125V) AEK7005
IC1101 STK407-040B
Q1105 2SA1145
Q1104 2SA1837
Q1102 2SA1941 (P)

Q1203 2SA933S
Q1108 2SA970
Q1109, Q1110 2SA992
Q1107 2SC1740S
Q1301, Q1302, Q1307, Q1308 2SC1740S

Q1309 2SC2240
Q1106 2SC2705
Q1103 2SC4793
Q1101 2SC5198 (P)
Q1111, Q1201, Q1202 2SD2144S

Q1306, Q1310 DTA123JS
Q1112, Q1303 DTA143ES
Q1204 DTC124ES
Q1304, Q1305 DTC143ES
D1307, D1309 11ES2

D1101–D1103, D1301–D1304, D1308 1SS254
D1310–D1312, D1316 1SS254

R1109 RD1/4PM104J
R1110 RD1/4PM112J

R1125, R1215, R1216 RD1/4PMF100J
R1116–R1119 RD1/4PMF101J
R1112 RD1/4PMF680J
R1312 RD1/4PU222J
R1315 RD1/4PU821J

R1115 RF1/4PS101J
R1120–R1123 RF1/4PS4R7J
R1213, R1214 RS2LMFR22J
Other Resistors RS1/10S J

OTHERS

CN1103 2P CONNECTOR 5569-02A1
CN1101 9P JUMPER CONNECTOR KPD9
CN1102 CONNECTOR (13P) KPE13

PT PRI ASSY

C

CAPACITOR

C1 (10000pF/AC250V) ACG7020

OTHERS

H1, H2 FUSE CLIP AKR7001

COILS

L1201, L1202 (1 µH) ATH-133
L1101 (0.7 µH) ATH1004

RELAY

RY1101 ASR7001

CAPACITORS

C1107, C1108 CCCSL101K2H
C1104 CCCSL120K2H
C1106 CCCSL5R0C2H
C1207, C1208 CCSQSL3R0C50
C1103 CCSQSL681J50

C1105 CEANP101M50
C1306 CEANP2R2M50
C1100, C1101, C1205, C1206 CEAT100M50
C1209, C1210, C1304 CEAT100M50
C1111, C1303 CEAT101M10

C1211, C1212 CEAT101M50
C1120 CEAT220M50
C1305 CEAT221M10
C1213 CEAT330M50
C1307 CEAT470M25

C1201, C1202 CEYA1R0M50
C1203, C1204 CKSQYB152K50
C1102 CKSQYB223K50
C1109, C1110, C1219 CKSQYF104Z50

RESISTORS

R1124 (0.33 Ω) ACN7001
R1126 RD1/2PM100J
R1217, R1218 RD1/4LMF101J

PT SEC ASSY

B

SEMICONDUCTORS

IC103 (1A/125V) AEK7009
IC101, IC102 (1.25A/125V) AEK7010
IC110, IC111 (10A/125V) AEK7022

CAPACITORS

C123 (0.01 µF/DC100V) ACG7021
C121, C122 CKSQYF103Z50

OTHERS

CABLE HOLDER (5P) 51063-0505

J102 JUMPER WIRE D15A05-200-2651
J101 JUMPER WIRE D15A11-200-2651

JACK ASSY

E

CABLE HOLDER (11P) 51063-1105

SEMICONDUCTORS

D4501–D4506, D4508 MTZJ8.2B

CAPACITORS

C4601–C4606 CKCYF103Z50

OTHERS

CN1003 8P CONNECTOR AKP7026
CN1104 PLUG 6-P KM250NA6L
CN1105 9P SOCKET KP200TA9L

I/O JACK VKN1070
SCREW PLATE VNE1948

21

HTV-A1

6. ADJUSTMENT

There is no information to be shown in this chapter.

7. GENERAL INFORMATION

7.1 IC

BU2092F (IC8001: AFPS ASSY)
Serial In/Parallel Out Driver

DD

V

OE

Q11

Q10

Q9

Q8

Q7

Q6

Q3

Q5

Q4

18 17 16 15 14 13 12 11 10

Output Buffer (Open Drain)

Control Circuit

12 bits Shift Register

12 bits Strage Register

123456789

Q0

Q1

Vss

DATA

LCK

CLOCK

Q2

M62419FP (IC6001: AFPS ASSY)
Electronic Volume Control with Tone Function

¶ The information shown in the list is basic information and may not

correspond exactly to that shown in the schematic diagrams.

Pin Function Block Diagram

No. Name I/O Description

1 Vss – GND
2 DATA I Serial data input
3 CLOCK I Shift lock for data ( )
4 LCK I Lutch clock for data ( )

Parallel data output (Nch Open Drain FET)

5Q0

||O

16 Q11

17 OE I Output enable (H: output, FET: OFF)
18 VDD – Power supply

Lutch Data L H

Output FET ON OFF

Block Diagram

CLOCK

CLOCK

I/F

DATA

DATA

VDD

SELECT OUT 2

DD

V

GND

SELECT OUT 1

VOL IN 2

LOUD IN 2

VOL IN 1

LOUD IN 1

SELECT 2 NF 2

SELECT 2 IN A

SELECT 2 IN B

–
+

+
–

–
+

+
–

SELECT 1 IN A

SELECT 2 NF 1

SELECT 1 IN B

SELECT 2 IN C

SELECT 2 IN D

ATTF OUT 2

SELECT 1 IN C

ATTF OUT 1

SELECT 1 IN D

ATTR OUT 2

TONE IN 2

+

–

–

+

TONE IN 1

ATTR OUT 1

TC 2 A

TC 1 A

TC 2 B

–
+

+
–

TC 1 B

TC 2 C

TC 1 C

TONE OUT 2

FADER IN 2

+

+

FADER IN 1

TONE OUT 1

REAR OUT 2

FRONT OUT 2

2242 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 24 23

+

–

–

Vref

–

–

+

211234567891011121314151617181920

REAR OUT 1

FRONT OUT 1

VREF

Vcc

Vcc

22

Pin Function

HTV-A1

No. Name Description

1 DATA Control data input terminal.

Data are entered synchronized to CLOCK.

2 GND Ground terminal

3 SELECT OUT1 Output terminals of the input selector switch

4 VOL IN1 Input terminals of the volume control section

5 LOUD IN1 Frequency characteristic setting terminal of

the loudness section

6 SELECT2 NF1 Each input gain is adjusted by the resistor

connected between this terminal and the
SELECT OUT terminal and the resistor added
between IN A and IN D.

7 SELECT1 IN A Input terminal for channel 1 of the input selector

switch section

8 SELECT1 IN B

9 SELECT1 IN C

10 SELECT1 IN D

11 ATTF OUT1 Output terminals of the volume control section

(initial stage). Connect by C connection to the
VREF terminal 22 for reduction of the switching
noise.

12 ATTR OUT1 Output terminals of the volume control section

(last stage)

13 TONE IN1 Input terminals of the tone control section

14 TC1 A Frequency characteristic setting terminals of

the tone control section for channel 1

15 TC1 B

No. Name Description

24 REAR OUT2 Output terminals of the fader volume control

section (rear)

25 FADER IN2 Input terminals of the fader volume control section

26 TONE OUT2 Output terminals of the tone control section

27 TC2 C Frequency characteristic setting terminals of

the tone control section for channel 2

28 TC2 B

29 TC2 A

30 TONE IN2 Input terminals of the tone control section

31 ATTR OUT2 Output terminals of the volume control section

(last stage)

32 ATTF OUT2 Output terminals of the volume control section

(initial stage). Connect by C connection to the
VREF terminal 22 for reduction of the switching
noise.

33 SELECT2 IN D Input terminal for channel 2 of the input selector

switch section

34 SELECT2 IN C

35 SELECT2 IN B

36 SELECT2 IN A

37 SELECT2 NF2 Each input gain is adjusted by the resistor

connected between this terminal and the
SELECT OUT terminal and the resistor added
between IN A and IN D.

38 LOUD IN2 Frequency characteristic setting terminal of

the loudness section

16 TC1 C

17 TONE OUT1 Output terminals of the tone control section

18 FADER IN1 Input terminals of the fader volume control section

19 REAR OUT1 Output terminals of the fader volume control

section (rear)

20 FRONT OUT1 Output terminals of the fader volume control

section (front)

21 Vcc Analog power supply terminal

22 DATA IC signal ground. Impress 1/2 VCC.

23 FRONT OUT2 Output terminals of the fader volume control

section (front)

39 VOL IN2 Input terminals of the volume control section

40 SELECT OUT1 Output terminals of the input selector switch

41 VDD Digital power supply terminal

42 CLOCK Clock input terminal for serial data transfer

23

HTV-A1

Screw A

Screw A

PAMP Assy

Screw A

PCB Holder

PCB Holder

PCB Holder

Heat Sink

7.2 DIAGNOSIS

Diagnosis Method for the Power Amplifier section (PAMP Assy)

(1) Remove the three screws A fixing the Heat sink.
(2) Remove the three PCB Holders and rotate as shown in the Fig 1.

D

Fig. 1

PAMP ASSY

SIDE B

Heat Sink

PAMP Assy

Fig. 2

24

Diagnosis Method for the AFPS Assy

(1) Remove the three screws A fixing the Heat sink.
(2) Remove the three PCB Holders and then remove the Heat

sink. (Refer to Fig.1)

(3) Remove the screw B, remove the two screws C, remove

the two push rivets D, and then remove the AFPS assy.
(Refer to Fig. 3)

(4) Short-circuit KN101 of the AFPS assy and KN1001 of the

JACK assy.

(5) Short-circuit all test terminals of the AFPS assy (SPRY,

ACRY, PWON) to GNDD.

(6) Remove C6031, enter an audio signal to the AL4 (Lch in)

terminal, and analyze the AFPS assy. (Refer to Fig. 4)

HTV-A1

Push Rivet D

Screw C

JACK Assy

Short-circuit SPRY, ACRY and
PWON terminals to GNDD.

Enter an audio signal

Remove C6031

Screw B

Push Rivet D

AFPS Assy

Fig. 3

KN1001

JACK Assy

A

AFPS ASSY

Fig. 4

SIDE A

KN101

AFPS Assy

25

HTV -A1

7.3 BLOCK DIAGRAM

CONTROL CENTER
HTV-C1

(Refer to the service manual RRV1960 HTV-C1/AUXJ, ACXJ)

26

AMPLIFIER
HTV-A1

HTV -A1

AC120V
60Hz

AC POWER CORD

27

HTV-A1

8. PANEL FACILITIES AND SPECIFICATIONS

SPECIFICATIONS

HTV-1

Amplifier Section
[Front left and right channels]

Continuous average power output of 30
watts* per channel, min., at 8 ohms, from 180
Hz to 15,000 Hz with no more than 1 %** total
harmonic distortion.

[Subwoofer channel]

Continuous average power output of 60
watts* , min., at 8 ohms, from 40 Hz to 180
Hz with no more than 1 %** total harmonic
distortion.

* Measured pursuant to the Federal Trade Commission’s Trade

Regulation rule on Power Output Claims for Amplifiers.

** Measured by Audio Spectrum Analyzer.

Input (Sensitivity/Impedance)

INPUT 1, 2 ........................................................... 200 mV/22 kΩ

Speaker Section

Front L/R ............................................................ 8.7 cm cone type

Subwoofer ......................................................... 20 cm cone type

Miscellaneous

Power Requirements .......................................... AC 120 V, 60 Hz

Power Consumption .......................................................... 150 W

Dimensions

Control center ....................... 610 (W) × 110 (H) × 166 (D) mm

Powered subwoofer ............. 364 (W) × 360 (H) × 371 (D) mm

Weight (without package)

Control center ................................................. 3.8 kg (8 lb 6 oz)

Powered subwoofer ................................. 13.5 kg (29 lb 12 oz)

Furnished Parts (HTV-C1)

System cable A ............................................................................ 1

System cable B ............................................................................ 1

Audio cord ................................................................................... 1

Mount kit ...................................................................................... 1

Dry Cell Batteries (AA/R6P) ........................................................ 2

Remote Control Unit ................................................................... 1

Operating Instructions ................................................................ 1

Warranty card .............................................................................. 1

24-3/16 (W) × 4-5/16 (H) × 6-9/16 (D) in

14-5/16 (W) × 14-3/16 (H) × 14-5/8 (D) in

NOTE:

Specifications and the design are subject to possible modifications
without notice, due to improvements.

Manufactured under license from the Dolby Laboratories.
DOLBY and the double-D symbol
Laboratories.

28

are trademarks of Dolby