JVC KS-FX922R User Manual
SERVICE MANUAL
CASSETTE RECEIVER
KS-FX922R
E... Continental Europe
KS-FX922R
Area Suffix
KS-FX922R
DISPDISP
TP TP
RDSRDS
PTYPTY
8 9 10 11 127
DAB
MO
Contents
Safety precaution------------------------------------- 1-2
Location of main parts-------------------------------
Disassembly method --------------------------------
Adjustment method ----------------------------------
Description of major ICs ----------------------------
1-3
1-4
1-11
1-15
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
No.49596
Feb. 2001
Adjustment method
KS-FX922R
Test Instruments reqired for adjustment
1.Digital osclloscope(100MHz)
2.Frequency Counter meter
3.Electric voltmeter
4.Wow & flutter meter
5.Test Tapes
VT724
VT739
VT712
VT703
6.Torque gauge
Power supply voltage
Load impedance
Line out
For playback frequency measurement
For wow flutter & tape speed measurement
Measuring conditions(Amplifier section)
for DOLBY level measurement
For head azimuth measurement
Cassette type for CTG-N
(mechanism adjustment)
DC14.4V(10.5~16V)
4 (2Speakers connection)
20k
Tuner section
BAND STEP
FM : 100kHz (Seek), 50kHz (Manual)
AM : 9kHz step
Preset Memory Initialization
Band
FM(MHz)
AM(kHz)
DUMMY LOAD
Exclusive dummy load should be used for AM
and FM dummy load,there is a loss of 6dB
between SSG output and antenna input. The
loss of 6dB need not be considered since
direct reading of figures are applied in this
working standard.
M1
87.5
153
Preset Memory
M2
M3
89.9
97.9
216
603
M4
105.9
999
M5
108.0
1404
M6
87.5
1620
Standard volume position
Balance and Bass,Treble volume .Fader
:Center(Indication"0")
Loudness,Dolby NR,Sound,Cruise:Off
Volume position is about 2V at speaker output with
following conditions.Playback the test tape VT721.
AM mode 999kHz/62dB,INT/400Hz,30%
modulation signal on receiving.
FM mono mode 97.9MHz/66dB,INT/400Hz,22.5kHz
deviation pilot off mono.
FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev.
Output level 0dB(1 V,50 /open terminal).
Arrangement of Adjusting
Cassette Mechanism Section
Capstan motor
Cassette mechanism
(Surface)
Azimuth screw
(Forward side)
Playback head
Tape speed adjust
Azimuth screw
(Reverse side)
1-11
KS-FX922R
Main board
Arrangment of adjusting
Head amplifier board section (Reverse side)
VR402:Rch
(Dolby NR level adj)
VR401:Rch
(Dolby NR Frequency response adj)
B402
E
Q401
D401
B401
CP401
1
R420
B408
1
R423
R421
R422
Q402
B409
Q403
D402
FSMW1101A
VR402
C417
D403
C418
R424
IC402
R425
C419
C414
B403
B410
B404
C410
C412
C411
R413
1
C415
R416
R415
C416
R418
R419
CP403
C409
R411
B415
C413
1
11
B411
IC401
B412
17
VR401
B416
R412
R410
C405
R408
31
C407
21
C408
R417
R414
B413
R404
B406
B414
R409
C406
R407
R406
1
B405
TPP
C404
CP402
1
R402
C401
2
R405
C403
R401
R403
C402
B407
Information for using a car audio service jig
1. We're advancing efforts to make our extension cords common for all car audio products.
Please use this type of extension cord as follows.
2. As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the
mechanism assembly after disassembly.
3. Extension cord : EXTKSRT002-18P ( 18 pin extension cord ) For connection between mechanism assembly
and main board assembly .
Check for mechanism driving section such as motor ,etc..
Cassette mechanism
Disassembly method
1. Remove the bottom cover.
2. Remove the front panel assembly.
3. Remove the top cover .
4. Install the front panel.
5. Confirm that current is being carried by connecting
an extension cord jig.
Note
Available to connect to the CP701 connector when installing the front panel.
Extension cord
EXTKSRT002-18P
to Cassette mechanism
1-12
EXTKSRT002-18P
to Main board
Main board
Front panel assembly
Extension cord
Main board
The mechanism should be directly connected to the board using the extension wire.
EXT-KSRT002-18P
Cassette mechanism
KS-FX922R
to Cassette mechanism
Extension cord
EXTKSRT002-18P
Main board
Front panel assembly
EXTKSRT002-18P
to Main board
1-13
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