Sony srf h 2 service manual

Page 1

SRF-HZ

SERVICE MANUAL

US Model
AEP Model
Australian Model

SPECIFICATIONS

Frequency range FM:
AM:
Antennas FM:

AM:
Power output 5.0

87.6-108 MHZ (US ModeI)

87.6-107.5 MHZ (AEP, ItaIy, Australian Mode-I)
530-l,710 kHz (US ModeI)

531-l,602 kHz (AEP, Italy, Australian Model)
FIexibIe antenna

Built-in ferrite bar antenna

mw + 5.0 mw (at 10% harmonic

distortion)
Headphone type Dynamic

Power requirements

1.5V DC, one size AAA (R03) battery
Battery life for FM reception
Approx. 55 hours, with Sony battery
aIkaIine AMA (N)
Approx. 25 hours, with Sony battery
UM-4 (NU)
Weight Approx. 124 g (4.4 oz) incio battery

Design and specifications subject to change without notice.

FM/AM STEREO ZBAND HEADPHDNE RECEIVER

SONIC.

Page 2

2 - 1. ELECTRICAL ADJUSTMENTS

SECTION 1
ELECTRICAL ADJUSTMENTS

AM [I signal
yenaralcu Fur me lead-wile WW
antenna class to
Q / m m lungs. 0.5- 5v m
0 II]
+ _°
30% amplitude I
III/adulation by _
40on signal DET OUT
m If signal
generator
Q
r
:22.5kHz Iraquency FM
dcvianan by 40014: antenna ram-nine!
figrul

- Repeat the procedures in each adjustment metal rims, and
me frequency coverage and uuking ldjuslmenu should be
finally done by the trimmer capacitors

AM IF ALIGNMENT

Adjust I0! 3 maximum leading on VTVM

Tl 455k":

AM FREQUENCV COVERAGE ADJUSTMENT

Adjust for a Iaximum raiding an VTVM

L5 CTI -4
US 520kHz I. 750k":
AEP. ItalmestraI ian 520k": II 650k":

AM TRACKING ADJUSTMENT

Adjust for a maximum leading on VTVI

L2 620k":

CTl-I IJOOkHz

FM IF ALIGNMENT

Adjust for a maximum reading on VTVN

TZ I 0. TM":

FM FREQUENCY COVERAGE ADJUSTMENT

Adjust Go! a maximum reading on VTVII

L4 c11-a
US 86 SMNz IDS. 5NNz
AEP. IkalyIAusUal ian 81. 35M": 108. (mm:

FM TRACKING ADJUSTMENT

Adjust for a maximum reading on VTVM

L3 On '2
US 86. SIN: I01 SMHz
AEP. ItaIy. Austral ian 87. 35qu 10315qu

FM VCO ADJUSTMENT

Setting :
POWER/FM mode Sclector swiich : ST
«3%? ,

Ilewency counter

(If-LL?

L Tum [he set to 92 MEL

2. MILISI RV! {or 19.0 KHZ t [00 H: mdinx on
me Iraquenzy counter.

ADJUSTMENT LOCATION:

- AMP BOARD - (COMPONENT SIDE)

S3 power switch

RVI : MPX VCO

- TUNER BOARD -

(COMPONENT SIDE)

: AM TRACKING

L5 : AM FREQUENCY
COVERAGE

L3: FM TRACKING
$2: BAND SWITCH
T1: AM IF

T2: FM IF

L4 : FM REQUENCY
COVERAGE

$1 : DX-LOCAL SWITCH

(CONDUCTOR SIDE)

CT1-4: AM FREQUENCY
COVERAGE

CT1-1 : AM TRACKING

CTI 3: FM FREQUENCY
COVERAGE

CT1-2: FM TRACKING