Panasonic NV-HS1000 Service Manual page 66

AUDIO SECTION
2-5-25. BIAS CURRENT ADJUSTMENT
TP ADJ.
TP4002 (HOT/
TEST LAND)
VR4002 RECORDING
TP4003 (GND/
TEST LAND)
TAPE M. EQ.
BLANK
V.T.V.M.
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.
AUDIO OUT
VR4512
(L)
TAPE M. EQ.
/
V.T.V.M./
SINEWAVE
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.
VR4501
(NTSC-L)
IC4501-34 VR4509
(L) (NTSC-R)
IC4501-47 VR4551
(R) (PAL-L)
VR4552
(PAL-R)
TAPE M. EQ.
BLANK FREQUENCY NTSC-R: 1.7+-0.003 (MHz)
TAPE
COUNTER
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.
I /
MODE INPUT
SPEC.
3.o+-0.1 (mVrms)
MODE
INPUT
SINEWAVE
STOP 1 KHz/-6dB
(AUDIO IN (L))
SPEC.
-s+-o.5 (dB)
MODE INPUT
SP
RECORDING
SPEC.
NTSC-L: 1.3+-0.003 (MHz)
PAL-L: 1 .4+-0.003 (MHz)
PAL-R: 1.s+-0.003 (MHz)
2-5-28. DEVIATION ADJUSTMENT
TP
BETWEEN
VR4502 and
R4511 (L)
VR4502 (L)
BETWEEN VR4507 (R)
VR4507 and
R4561 (R)
TAPE M. EQ.
V.T.V.M./
BLANK
SINEWAVE
TAPE
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
IC4501-33
(L)
VR4550
IC4501-48
(R)
TAPE M. EQ.
OSCILLO-
NTSC
SCOPE/
RECORDED
SINEWAVE
TAPE
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 (1.608 MHz/400 mVp-p)
to PS4003-8.
5. After this adjustment, connect P501 and disconnect
the jumper wire.
2-16
ADJ. MODE
SINEWAVE
SP
1 KHi/-6 dB
RECORDING
(AV1 IN)
SPEC.
110 (mVrms)
ADJ. MODE
SINEWAVE
1.608MHz/
PLAYBACK
400 mVp-p
(PS4003-8)
SPEC.
Leh (IC4501-33)=
Reh (IC4501-48)
INPUT
INPUT
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