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KS-FX922R
SERVICE MANUAL
CASSETTE RECEIVER
KS-FX922R
Area Suffix
E ... Continental Europe
KS-FX922R
DISP
DAB
TP
RDS
PTY
7 8 9 10 11 12 MO
Contents
Safety precaution ------------------------------------- 1-2
Location of main parts ------------------------------- 1-3
Disassembly method -------------------------------- 1-4
Adjustment method ---------------------------------- 1-11
Description of major ICs ---------------------------- 1-15
No.49596
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. Feb. 2001
KS-FX922R
Adjustment method
Test Instruments reqired for adjustment Tuner section
BAND STEP
1.Digital osclloscope(100MHz) FM : 100kHz (Seek), 50kHz (Manual)
2.Frequency Counter meter
3.Electric voltmeter AM : 9kHz step
4.Wow & flutter meter
5.Test Tapes
Preset Memory Initialization
VT724 for DOLBY level measurement Preset Memory
Band
VT739 For playback frequency measurement M1 M2 M3 M4 M5 M6
VT712 For wow flutter & tape speed measurement FM(MHz) 87.5 89.9 97.9 105.9108.0 87.5
VT703 For head azimuth measurement AM(kHz) 153 216 603 999 1404 1620
6.Torque gauge Cassette type for CTG-N
(mechanism adjustment) DUMMY LOAD
Measuring conditions(Amplifier section) Exclusive dummy load should be used for AM
and FM dummy load,there is a loss of 6dB
Power supply voltage DC14.4V(10.5~16V) between SSG output and antenna input. The
Load impedance 4 (2Speakers connection) loss of 6dB need not be considered since
direct reading of figures are applied in this
Line out 20k working standard.
Standard volume position
Balance and Bass,Treble volume .Fader
Arrangement of Adjusting
:Center(Indication"0")
Cassette Mechanism Section
Loudness,Dolby NR,Sound,Cruise:Off Capstan motor Tape speed adjust
Volume position is about 2V at speaker output with
Cassette mechanism
following conditions.Playback the test tape VT721. (Surface)
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). Azimuth screw Playback head
(Forward side)
Azimuth screw
(Reverse side)
1-11
KS-FX922R
Arrangment of adjusting
Head amplifier board section (Reverse side)
VR402:Rch VR401:Rch
(Dolby NR level adj) (Dolby NR Frequency response adj)
B402 C409
B415
R411 VR401
VR402 C412 C411 C410
C417
R412
R423
B416
D403
R413
R410
E C404 TPP
C418 C413
Q401 1
D401
R424
R402
C401
C405 CP402
R421 1
R422 R408 2
R404
R405
B406
31
C403
IC402 1
Q402
11
B409 R425
B401 C419 C414
B414
C407
Q403
B411
R401
21
CP401
C415
R409
IC401
C408
C406
R417
B412
R420
D402
B403
1 R414
R416
B410
R407
B404
R415
C416
R418
R406
R419
B408
R403
CP403 C402
1 FSMW1101A
B407
17 1 B405
B413
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 in-
stalling the front panel.
Extension cord
EXTKSRT002-18P
Main board
to Cassette mechanism
Front panel assembly
to Main board
1-12 EXTKSRT002-18P
KS-FX922R
Extension cord
The mechanism should be directly connected to the board using the extension wire.
EXT-KSRT002-18P
Cassette mechanism
Extension cord
EXTKSRT002-18P
Main board
Front panel assembly
to Cassette mechanism
to Main board
EXTKSRT002-18P
1-13
KS-FX922R
Item Conditions Adjustment and Confirmation methods S.Values Adjust
1. Head Test tape: Head height adjustment
azimuth SCC-1659 Adjust the azimuth directly. When you
adjustment VT703(10kHz) adjust the height using a mirror tape,
remove the cassette housing from the
mechanism chassis. After installing the
cassette housing, perform the azimuth
adjustment. A line
1. Load the SCC-1659 mirror tape. Adjust with
height adjustment screw A and azimuth Head shield
adjustment screw B so that line A of the
mirror tape runs in the center between Lch The head is at low position
and Rch in the reverse play mode. during.
2. After switching from REV to FWD then to
REV, check that the head position set in B line
procedure 1 is not changed. (If the position
has shifted, adjust again and check.)
Head shield
3. Adjust with azimuth adjustment screw B so The head is at High position
that line B of the mirror tape runs in the during REV.
center between Lch and Rch in the forward
play mode.
Output
Head azimuth adjustment level:
Maximum
1. Load VTT724 (VT724) (1kHz) and play it
back in the reverse play mode. Set the Rch PBHead
output level to max.
FWD Adj B
2. Load VTT703 (VT703) (10kHz) and play it
back in the forward play mode. Adjust the
Rch and Lch output levels to max, with
azimuth adjustment screw B. In this case,
the phase difference should be within 45 .
REV Adj C HEIGHT Adj A
3. Engage the reverse mode and adjust the
output level to max, with azimuth
adjustment screw C.
(The phase difference should be 45 or
more.) phase
(0 ) (45 )
4. When switching between forward and
reverse modes, the difference between
channels should be within 3dB. (Between
FWD L and R, REV L and R.)
5. When VTT721 (VT721) (315Hz) is played
back, the level difference between channels
should be within 1.5dB.
2. Tape speed Test tape: VTT712 1. Check to see if the reading of the F, counter / Tape speed: Built-in volume
and wow (3kHz) wow flutter meter is within 3015 3045(FWD 3015 resistor
flutter / REV), and less than 0.35% (JIS RMS). 3045Hz
confirmation Wow
2. In case of out of specification, adjust the flutter: less
motor with a built-in volume resistor. than 0.35%
3. Play back Test tape: VTT724 1. Play test tape VTT724, and set the volume Speaker out
frequency (1kHz) position at 2V. 1kHz / 63Hz
response VTT739 :0 3db
confiramation (63Hz / 1kHz / 10kHz) 2. Play test tape VTT739 and confirm. 1kHz / 10kHz
1kHz / 10kHz: -1 3dB, : -1 3db
1kHz / 63Hz: 0 3dB,
3. When 10kHz is out of specification, it will be
necessary to read adjust the azimuth.
The tuner section is of an adjustment-freedesign. In case the tuner is in trouble, replace the tuner pack.
1-14
KS-FX922R
Block Diagram
SUB
MOTOR
SWITCH MAIN
5 TAPE END.STANDBY MOTOR
HEAD
CN403 CN402
TO SPEAKER MOTOR LCH
TO CD CHANGER METAL
4 CONNECTOR TO REAR LINE OUT TAPE IN RCH
MODE
J801 CP901 J321 STANDBY
TAPE END
REEL IC401
L/R F PB EQ
L/R R FRONT L/R
REAR L/R DOLBY CXA2560Q
SCK
IC301 F/R
MS
SI/SO POWER AMP. LCH
IC801 LA4743K RCH IC402
FF/REW
DC MOTOR DRIVER
CN401
CHANGER CONTROL
CP401
3 OUT LR
HD74HC126FP-X OUT RR SUBMO+ LB1641
OUT LF SUBMO-
OUT RF
JBUS SI CD RCH MECHANISM CONTROL
JBUS SO CD LCH IC161 F/R
JBUS I/O E.VOLUME MODE
JBUS SCK
TAPE L/R STANDBY IC602
J1 TEA6320T-X LCD1
FF/REW REMOTE SENSOR
MOTOR QNZ0450-001
AM RPM6938-SV4
TUNER L/R SUBMO
FM
2 TAPE IN
DOLBY S1 S68
TU1 MS COM1 COM3
AM/FM TUNER PACK REEL IC601
REMOCON
QAU0222-001 LCD DRIVER
IC701
COMP OUT LCDDA LC75873NW
SYSTEM CONTROL MICON LCDCK
SEEK/STOP UPD178018AGC-603
CN601
LCDCE
CJ601
IC71 SD/ST
RDS DETECTOR KEY
SMETER
1 SAA6579T-X S601 S619
RDSDA KEY 0 2
Tuner.Power AMP.Changer/System Controller RDSCK LCD DRIVER/KEY SWITCH CIRCUT
A B C D E F G
2-1
Standard schematic diagrams KS-FX922R
Receiver & System control circuit section
5
4
3
2
FM Radio Signal/Radio Main Signal
1 AM Radio Signal
Tape PB/Main Signal
A B C D E F G 2-3
KS-FX922R KS-FX922R
Mecha control circuit section
5
4
3
2
Tape PB/Main Signal
1
A B C D E F G
2-4
KS-FX922R
LCD driver & Operation switch circuit section
5
4
3
2
1
A B C D E F G
2-5
KS-FX922R
SERVICE MANUAL
CASSETTE RECEIVER
KS-FX922R
DISP
DAB
TP
RDS
PTY
7 8 9 10 11 12 MO
Area Suffix
EX Centeal Europe
This model is KS-FX922RE EX that is added to the preceding model,
theKS-FX922R E . Therefore the service manual for this model is
consisting of Parts list only.
For others, please refer to the service manual of KS-FX922R E (issue No.49596).
No.49631
COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD.
Mar. 2001
KS-FX922R
Parts list(Accessories) P3-17 Block No.M4MM
Parts number
A Iten Parts name
EX
Q'ty
E
A 2 INST.BOOK GET0017-002A 1
(LANGUAGE) (SPA,ITA,SWE,FIN) ----------------------------
VICTOR COMPANY OF JAPAN, LIMITED
MOBILE ELECTRONICS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
200103
(No.49631)