Sony ta h 2600 service manual
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Page 1
TA-H2600
SERVICE MANUAL
This set is the Amplifier
section in MHC-2600 and
FH-E737CD.
US Model
Canadian Model
AEP Model
UK Model
E Model
Australian Model
AUDIO POWER
SPECIFICATIONS (US model)
POWER OUTPUT AND
TOTAL HARMONlC
DISTORTION:
With 6 ohm loads both
channels driven, from
70 - 20000 Hz; rated 30 watts
per channel minimum RMS
power, with no more than
1% total harmonic distortion
from 250 milliwatts to rated
output.
Continuous RMS power output
30 + 30 watts (6 ohms at
1 kHz. DIN)
35 + 35 watts (6 ohms at
I kHz. 5% THD)
Music power output
55 + 55 watts (6 ohms at
I kHz, 10% THD)
SPECIFICATIONS
Peak music power output
(E, Saudl Arabia model)
330 watts
Inputs MIX Mic (minijack):
sensitivity 1 mv,
impedance 600 ohms
ADAPTOR (pin jacks)
(5, Saudi Arabia model)
sensitivity 300 mV.
impedance 47 kilohms
Outputs HEADPHONES
(stereo miniiacki
accepts headphones at
8 ohms or more.
ADAPTOR (pin jacks)
(E, Saudi Arabia model)
output level 300 mV
impedance 10 kilohms
Design and specifications subject to change
without notice.
STEREO AMPLIFIER
SONZ
Page 2
TA-H2600
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs, screws,
and all other exposed metal pans for AC leakage. Check leakage as
described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground
and from all exposed metal pans to any exposed metal part having
a return to chassis, must not exceed 0.5mA (500 microampers).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
SAFETY-RELATED COMPONENT WARNING II
COMPONENTS IDENTIFIED BY MARK A 0R DOTTED LINE
WITH MARK A ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL T0 SAFE OPERATION. REPLACE
THESE COMPONENTS WITH SONY PARTS WHOSE PART
NUMBERS APPEAR AS SHOWN IN THIS MANUAL OR IN
SUPPLEMENTS PUBLISHED BY SONY.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voloneter. The "limit" indica-
tion is 0.75V, so analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa SH~63Trd are
examples of a passive VOM that is suitable. Nearly all battery
operated digital multimeters that have a 2V AC range are
suitable. (See Fig.A)
To Exposed Metal
Parts on Set
AC
0.15ttF 15" / voltmeter
_ (0.75V)
1:- Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
ATTENTION AU COMPOSANT AYANT RAPPORT
A LA SECURITEI
LES COMPOSANTS IDENTIFIEs PAR UNE MAROUE A sun
LEs DIAGRAMMES SCHEMATIQUES ET LA LISTE DES PIECES
SONT CRITIQUES POUR LA SECURITE DE FONCTIONNE-
MENT. NE REMPLACER ses COMPOSANTS QUE PAR DES
PIECES SONY DONT LES NUME'Ros SONT DONNEs DANS
CE MANUEL ou DANS LES SUPPLEMENTS PUBLIEs PAR
SONY.
TABLE OF CONTENTS
1. GENERAL 3-5. Printed Wiring Boards
Location of Controls .................................................. 3 ' Panel, Power section ' """"""""""""""""""" 16
36. Schematic Diagram
- Panel, Power section - ................................. 21
2. DISASSEMBLY ........... ...................... 4 37. to Block Diagrams ...................................... 25
38. Pin Functions of IC501 ................................... 28
3. DIAGRAMS
3-1. Circuit Boards Location . 6 4. EXPLODED VIEW .
32. Semiconductor Lead Layouts 7
3-3. Printed Wiring Boards - Main section - ........... 9 5 . ELECTRICAL PARTS LIST .
3-4. Schematic Diagram - Main section - .............. 11