AUDIO SECTION
2-5-25. BIAS CURRENT ADJUSTMENT
TP
ADJ.
MODE
INPUT
TP4002 (HOT/
I/
TEST LAND)
VR4002 RECORDING
TP4003 (GND/
TEST LAND)
TAPE
M. EQ.
SPEC.
BLANK
V.T.V.M.
3.o+-0.1 (mVrms)
TAPE
Note: 1. Connect a jumper wire between TP4004 and GND.
2. Set the S-VHS SW to OFF position.
2-5-26. HiFi E-E LEVEL ADJUSTMENT
TP
ADJ.
MODE
INPUT
AUDIO OUT
SINEWAVE
(L)
VR4512
STOP
1 KHz/-6dB
(AUDIO IN (L))
TAPE
M. EQ.
SPEC.
/
V.T.V.M./
SINEWAVE
-s+-o.5 (dB)
GENERATOR
Note: 1. Select the STEREO mode by Remote Controller.
(Both Left and Right indicators on the FIP are lit.)
2. Set the HIFI REC VR to FIX position.
2-5-27. CARRIER FREQUENCY ADJUSTMENT
TP
ADJ.
MODE
INPUT
VR4501
(NTSC-L)
IC4501-34
VR4509
(L)
(NTSC-R)
SP
IC4501-47
VR4551
RECORDING
(R)
(PAL-L)
VR4552
(PAL-R)
TAPE
M. EQ.
SPEC.
NTSC-L: 1.3+-0.003 (MHz)
BLANK
FREQUENCY NTSC-R: 1.7+-0.003 (MHz)
TAPE
COUNTER
PAL-L: 1 .4+-0.003 (MHz)
PAL-R: 1.s+-0.003 (MHz)
Note: 1. When adjusting the NTSC mode, connect a jumper
wire between PP3013-13 and GND.
2. When adjusting the PAL mode, disconnect a
jumper wire.
2-16
2-5-28. DEVIATION ADJUSTMENT
TP
ADJ.
MODE
INPUT
BETWEEN
VR4502 and
SINEWAVE
R4511 (L)
VR4502 (L) SP
1 KHi/-6 dB
BETWEEN
VR4507 (R) RECORDING (AV1 IN)
VR4507 and
R4561 (R)
TAPE
M. EQ.
SPEC.
BLANK
V.T.V.M./
TAPE
SINEWAVE
110 (mVrms)
GENERATOR
Note: 1. Before recording the sinewave, adjust the HI Fl
REC VR until the audio output level of AV1 is
400 mVrms.
2-5-29. FM B.P.F. ADJUSTMENT
TP
ADJ.
MODE
INPUT
IC4501-33
SINEWAVE
(L)
1.608MHz/
IC4501-48
VR4550
PLAYBACK 400mVp-p
(R)
(PS4003-8)
TAPE
M. EQ.
SPEC.
NTSC
OSCILLO-
RECORDED SCOPE/
Leh (IC4501-33)=
TAPE
SINEWAVE
Reh (IC4501-48)
GENERATOR
Note: 1. Disconnect P501 (from MAIN C.B.A. to HEAD AMP
PACK C.B.A.).
2. Connect a jumper wire between PP4003-16 and
GND.
3. The GND lead of oscilloscope must be connected
to GND on HIFI AUDIO PACK C.B.A. to reduce the
noise.
4. Supply the sinewave signal (1.608MHz/400mVp-p)
to PS4003-8.
5. After this adjustment, connect P501 and disconnect
•
the jumper wire.
Содержание NV-HS1000
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