32
VC-H992U
VC-H992U(A)
MTS CIRCUIT ADJUSTMENT
(HI-FI MODELS ONLY)
5-4 ADJUSTMENT OF SIF-INPUT LEVEL
Measuring
AC milli-voltmeter and RF signal
instrument
generator.
Mode
E-E
Input signal
RF CH-10 (at 300Hz 30% MOD.)
Test point
AUDIO OUT jack (R channel)
Control
R142(S-IF ADJ.)
Specification
Minimized
1. Feed the RF signal CH-10 (at 300Hz 30% MOD.) to
antenna terminal.
2. Connect the AC milli-voltmeter to right channel output
terminal.
3. Set the audio signal to 300Hz and the modulation facter
to 30% (Left channel only) and adjust R142 (S-IF ADJ.)
so that the right channel output becomes minimized.
5-5 ADJUSTMENT OF STEREO SEPARATION
Measuring
AC milli-voltmeter and RF signal
instrument
generator.
Mode
E-E
Input signal
RF CH-10 (at 3kHz 30% MOD.)
Test point
AUDIO OUT jack (R channel)
Control
R144 (SEPARATION ADJ.)
Specification
Minimized
1. Feed the RF signal CH-10 (at 3kHz 30% MOD.) to
antenna terminal.
2. Connect the AC milli-voltmeter to right channel output
terminal.
3. Set the audio signal to 3kHz and the modulation factor
to 30% (Left channel only) and adjust R144 (SEPARA-
TION ADJ.) so that the right channel output becomes
minimized.
4. Repeat step 5-4 ADJUSTMENT OF SIF-INPUT LEVEL,
until obtain a specification.
Summary of Contents for VC-H992U
Page 5: ...5 VC H992U VC H992U A 1 3 LOCATION OF MAJOR COMPONENTS AND CONTROL ...
Page 50: ...VC H992U VC H992U A 50 8 BLOCK DIAGRAM SYSTEM SERVO BLOCK DIAGRAM ...
Page 51: ...VC H992U VC H992U A 51 ...
Page 52: ...VC H992U VC H992U A 52 SIGNAL FLOW BLOCK DIAGRAM ...
Page 54: ...VC H992U VC H992U A 54 POWER CIRCUIT BLOCK DIAGRAM ...
Page 57: ...VC H992U VC H992U A 57 7 8 9 10 11 12 13 ...
Page 59: ...VC H992U VC H992U A 59 7 8 9 10 11 12 13 ...
Page 61: ...VC H992U VC H992U A 61 7 8 9 10 11 12 13 ...
Page 63: ...VC H992U VC H992U A 63 7 8 9 10 11 12 13 ...
Page 65: ...VC H992U VC H992U A 65 PWB FOIL PATTERN OPERATION PWB A B C D E F G H 1 2 3 4 5 6 7 ...
Page 66: ...VC H992U VC H992U A 66 A B C D E F G H 1 2 3 4 5 6 7 MAIN PWB ...