Teac A-L700P User manual

AA--LL770000PP
SERVICE MANUAL
Power Amplifier
Effective : January, 2003 S-0084A
NOTES
●PC boards shown are viewed from parts side.
●The parts with no reference number or no parts number in the
exploded views are not supplied.
●As regards the resistors and capacitors, refer to the circuit diagrams
contained in this manual.
●£Parts marked with this sign are safety critical components. They
must be replaced with identical components - refer to the appropriate
parts list and ensure exact replacement.
●Parts of [ ] mark can be used only with the version designated.
[US]:U.S.A.[C]:CANADA[E]:EUROPE[UK]:U.K.
CONTENTS
1 SPECIFICATIONS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・2
2 ADJUSTMENTS ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・2
3 EXPLODED VIEWS AND PARTS LIST ・・・・・・・・・・・・・・・・・3
4 PC BOARDS AND PARTS LIST ・・・・・・・・・・・・・・・・・・・・・・・・5

1 SPECIFICATIONS
−2−
Power outputs .................................. 30 W/ch (6 Ω, 0.5 %, 1 kHz)
Input sensitivity ............................................................ 1 V/47 kΩ
Frequency response ...................... 20 Hz to 20,000 Hz (+1/-3 dB)
Power requirements .................. AC 230 V, 50 Hz (Europe model)
AC 120 V, 60 Hz (U.S.A./Canada model)
Power consumption.................................. 45 W (STANDBY : 5 W)
Dimensions (WxHxD).................................... 215 x 109 x 339 mm
Weight.................................................................................. 2.5 kg
Operating temperature ................................................ 5 ˚C ~ 40 ˚C
Operating humidity...................................................... 5 % ~ 90 %
Storage temperature ................................................ -20 ˚C ~ 55 ˚C
Accessories .......................................... RCA cable (red/white) x 1
RCA cable (black) x 1
LINK cable x 1
•Design and specifications are subject to change without notice.
2 ADJUSTMENTS
DC Offset Level Adjustment
DC Voltmeter...............Connect to speaker output terminal
VR81
VR80
SURROUND (L)
SURROUND (R)
CENTER
DC Voltmeter 0V (-30mV~+30mV) VR81
VR80
VR80
ADJUST FOR
ADJUSTMENT CHANNEL
DC Voltmeter 0V (-30mV~+30mV)
DC Voltmeter 0V (-30mV~+30mV)

3 EXPLODED VIEWS AND PARTS LIST
−3−
2
34
5
1
8
90
q
w
7
r
t
y
u
i
e
p
a
o
t
8
7

−4−
EXPLODED VIEW LIST
REF.NO. PARTSNO. DESCRIPTION REMARKS
1 9A09610100 PANEL,FRONT KKM1A125ZC35
2 9A09607100 PANEL,SUB CGW1A344R6K101
3 9A09606900 KNOB,POWER CBC1A140M7K101
4£9A09609700 SW,PUSH HSH1A008ZV
5 9A09607000 INDICATOR,POWER CGL1A202
7 9A09609400 FOOT HKL1A074Z
8 9A06229300 CUSHION,FOOT KHG1A039Z
9 9A09608700 CHASSIS,BOTTOM CUA1A216
10 9A09575110 MAINPCBASSY COP11539B
11 9A09574710 SMPSPCBASSY[US,C] COPDDS140B
9A09574720 SMPSPCBASSY[E,UK] COPDDS140A
12 9A09608100 INSULATOR,SMPS CMX1A136
13 9A09607700 TOPCABINET CKC1B131S35
14 9A09574810 AMPPCBASSY COP11528B
15 9A09608200 PLATE,HEATSINK CMY1A200
16 9A09574810 AMPPCBASSY COP11528B
17 9A09575110 MAINPCBASSY COP11539B
18 9A09575110 MAINPCBASSY COP11539B
19 9A09607810 REARPANEL[US,C] CKF1A243X
9A09607820 REARPANEL[E,UK] CKF1A243Z
20£9A06754900 BUSHING,ACCORD KHR1A028
21£9A07872600 POWERCORD[US,C] CJA523FBY
£9A07916700 POWERCORD[E] CJA2B043Z
£9A07916800 POWERCORD[UK] CJA2E045Z
9A09607900 FERRITE,RING CLZ9W003Z
INCLUDED ACCESSORIES
REF.NO. PARTSNO. DESCRIPTION REMARKS
9A09478700 OWNER'SMANUAL,EFSGIN CQX1A807Z
9A09607500 CORD,PIN CJS4M027Z
9A09607600 CORD,PIN CJS4N014Z
9A09610000 CORD(STEREO)MINI KJS9D001Z

4 PC BOARDS AND PARTS LIST
−5−
MAIN PCB (GATHER)

MAIN PCB ASSY (GATHER)
REF.NO. PARTSNO. DESCRIPTION
9A09575110 MAINPCBASSY
9A09608900 PCB,MAIN
9A09608000 PLATE,EARTH
BK11‑BK13 9A09559700 BRACKET,PCB
CN81 9A07889700 WAFER,MOLEX35336‑0610
CN82,CN83 9A07889900 WAFER,MOLEX35336‑0710
CN84 9A07889700 WAFER,MOLEX35336‑0610
CN85,CN86 9A07889900 WAFER,MOLEX35336‑0710
CN87 9A08219800 WAFER
CN91,CN92 9A05356300 WAFER,04GA19ZM
D201‑D204 9A08878200 DIODE,1SS133T‑77
D901 9A09344400 LED,YELLOW
D902 9A09563300 LED,BLUE
IC21£9A08218600 IC,MC7805C
JK31 9A06861800 JACK,HEADPHONE
JK32 9A09607300 JACK,BOARD3P
JK33 9A09607400 TERMINAL,SP(RR/BB)
JK34 9A09595100 TERMINAL,SP(R/B)
Q201 9A08884100 TR,KRA107M
Q202‑Q207 9A08878300 TR,KRC107M
Q901‑Q903 9A08878300 TR,KRC107M
R208,R215£9A05338200 R,METALOXIDEFILM1W390
S100£9A09609700 SW,PUSH
S101 9A06675300 SW,SLIDE
VR11‑VR13 9A09609900 VR,VOL
WF87 9A08219900 CONNECTOR
AMP PCB ASSY
REF.NO. PARTSNO. DESCRIPTION
9A09574810 AMPPCBASSY
9A09608800 PCB,AMP
9A09608200 PLATE,HEATSINK
BD81,BD82 9A07050600 BEAD,CORE
BD84‑BD87 9A07050600 BEAD,CORE
BK81 9A09559700 BRACKET,PCB
CN84 9A05967900 WAFER,MOLEX5268‑03A
D801,D802 9A08878200 DIODE,1SS133T‑77
D804 9A08878200 DIODE,1SS133T‑77
IC81 9A09570400 IC,TC2000
IC82£9A09570600 IC,TP2050
L308‑L311 9A09559500 COIL,SPEAKER
Q801 9A08884100 TR,KRA107M
Q802,Q803 9A08878300 TR,KRC107M
Q804 9A09041400 TR,KRC111MT
Q805 9A08884100 TR,KRA107M
R822,R823 9A09571600 R,METALFILM
R828£9A09571700 R,METALOXIDEFILM2W1K
RY81 9A09569900 RELAY
RY82 9A09058500 RELAY
VR80,VR81 9A09609800 R,SEMI‑FIXED5K
WF81,WF82 9A07890000 CONNECTOR,MOLEX35237‑0710
WF83 9A07889800 CONNECTOR,MOLEX35237‑0610
−6−
AMP PCB

86 74 52 31
E
D
C
B
A
Power Amplifier
AA--LL770000PP
1 st Issue; November 2002
BLOCK DIAGRAM
A-L700P

86 74 52 31
E
D
C
B
A
Power Amplifier
AA--LL770000PP
1 st Issue; November 2002
WIRING DIAGRAM
A-L700P

86 74 52 31
E
D
C
B
A
SCHEMATIC DIAGRAM
A-L700P
MAIN PCB, DIGITAL AMP PCB
Power Amplifier
AA--LL770000PP
1 st Issue; November 2002
DIGITAL AMP PCB
MAIN PCB-5
MAIN PCB-4 MAIN PCB-3MAIN PCB-2
MAIN PCB-1
DIGITAL AMP PCB
NOTES:
1. Resistor values are in ohms (k=kilo-ohms, M=megohms).
2. Capacitor values are in microfarads (p=picofarads).
3. £Parts marked with this sign are safety critical components.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement.

86 74 52 31
E
D
C
B
A
SCHEMATIC DIAGRAM
A-L700P
SMPS PCB
Power Amplifier
AA--LL770000PP
1 st Issue; November 2002
INSTRUCTIONS FOR SERVICE PERSONNEL
BEFORE RETURNING APPLIANCE TO THE CUSTOMER, MAKE LEAKAGE-
CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT.
NOTES:
£Parts marked with this sign are safety critical components.
They must always be replaced with identical components-refer
to the appropriate parts list and ensure exact replacement.
SMPS PCB [USA/CANADA] SMPS PCB [EUR/UK]