Tuner Section - Hitachi TRK-8190E Service Manual

TRK-8190E, E(ES
LUBRICATION
Lubricate one or two drops of machine oil to rotating point Lubrication Oil or grease
or lubricate grease to sliding point. Lubricate the respective
parts listed below once every 1000 hours or once a year
under normal conditions of use. Avoid oiling them exces- Capstan shaft bearing Oil
sively, or rotation may become irregular because of oil
splashes.
Motor shaft bearing
Pressure roller bearing
ADJUSTMENT
TUNER SECTION
Dummy antenna (aerial)
FM ————. 752 — Sw—
o—
8pF 3302
(75—R9)q
RgQ
Rg : SG's output impedance
1. FM IF adjustment
Setting:
@ Function selector: Radio
@ Mode switch: Mono
@ Band selector: FM
Connection:
TP101
33KQ
Genescope
0.01 nF
TP201 (R225)
Adjustment:
Genescope Oe tion: Reading Remarks
— Turn T202 fully counterclockwise.
+
Maximum 1) fc: Specified center frequency of the
ceramic filter.
2) Reduce the level of the genescope to
make one waveform.
10.7 MHz Highest
Adjust 1202 for a symmetrical sinewave
(S curve) output.