JVC RC-BZ5LB User manual

SERVICE MANUAL
CD PORTABLE SYSTEM
No.20819
July. 2000
Printed in Japan
200007(S)
RC-BZ5LB/BZ5RD
RC-BZ6BU
(No.20819)
RC-BZ5LB/BZ5RD
RC-BZ6BU
Safety precautions
Importance administering point on the safety
Preventing static electricity
Important for laser products
Disassembly method
Adjustment method
Description of major ICs
RC-BZ5LB/BZ5RD
REMOTE CONTROL RM-SRCBZ5
REMOTE CONTROL RM-SRCBZ6
RC-BZ6BU
RC-BZ5LB/BZ5RD
RC-BZ6BU
Areas suffix
J ---------------- U.S.A.
C ------------- Canada
VICTOR COMPANY OF JAPAN, LIMITED
AUDIO & COMMUNICATION BUSINSS DIVISION
PERSONAL & MOBILE NETWORK B.U. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
COPYRIGHT 2000 VICTOR COMPANY OF JAPAN, LTD.
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Contents Comparison table
Item RC-BZ5LB/BZ5RD RC-BZ6BU
Jog dial circuit Not used Used
Back light (LCD) Not used Used
Bass boost circuit Not used Used
Power amplifier 14W 18W
Electrical volume Not used Used
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Safety precautions
1.This design of this product contains special hardware and many circuits and components specially
for safety purposes. For continued protection, no changes should be made to the original design
unless authorized in writing by the manufacturer. Replacement parts must be identical to those
used in the original circuits. Services should be performed by qualified personnel only.
2. Alterations of the design or circuitry of the product should not be made. Any design alterations of
the product should not be made. Any design alterations or additions will void the manufacturer`s
warranty and will further relieve the manufacture of responsibility for personal injury or property
damage resulting therefrom.
3. Many electrical and mechanical parts in the products have special safety-related characteristics.
These characteristics are often not evident from visual inspection nor can the protection afforded
by them necessarily be obtained by using replacement components rated for higher voltage,
wattage, etc. Replacement parts which have these special safety characteristics are identified in
the Parts List of Service Manual. Electrical components having such features are identified by
shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a
substitute replacement which does not have the same safety characteristics as the recommended
replacement parts shown in the Parts List of Service Manual may create shock, fire, or other
hazards.
4. The leads in the products are routed and dressed with ties, clamps, tubings, barriers and the
like to be separated from live parts, high temperature parts, moving parts and/or sharp edges
for the prevention of electric shock and fire hazard. When service is required, the original lead
routing and dress should be observed, and it should be confirmed that they have been returned
to normal, after re-assembling.
5. Leakage current check (Electrical shock hazard testing)
After re-assembling the product, always perform an isolation check on the exposed metal parts
of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control
shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.
Do not use a line isolation transformer during this check.
Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure
the leakage current from each exposed metal parts of the cabinet , particularly any exposed
metal part having a return path to the chassis, to a known good earth ground. Any leakage
current must not exceed 0.5mA AC (r.m.s.)
Alternate check method
Plug the AC line cord directly into the AC outlet. Use an AC voltmeter having, 1,000 ohms
per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by
a 0.15 F AC-type capacitor between an exposed
metal part and a known good earth ground.
Measure the AC voltage across the resistor with the
AC voltmeter.
Move the resistor connection to each exposed metal
part, particularly any exposed metal part having a
return path to the chassis, and measure the AC
voltage across the resistor. Now reverse the plug in
the AC outlet and repeat each measurement voltage
measured any must not exceed 0.75 V AC (r.m.s.).
This corresponds to 0.5 mA AC (r.m.s.). Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500 10W
0.15 F AC TYPE
!
CAUTION
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
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Caution: For continued protection against risk of
fire, replace only with same type 3A/125V for
F902 and F903.This symbol specifies type of fast
operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F902 et F903 comme le
meme type que 3A/125V.
Ce sont des fusibles suretes qui functionnes rapide.
Importance administering point on the safety
For USA and Canada / pour Etats - Unis d' Amerique et Canada
F901
Not used
J9
POWERTRANSFORMER
CN307CN306
D902
Power supply board
D903 D901
F902
F903
D904
R998
S901
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CD Pick up
Land
Preventing static electricity
1.Grounding to prevent damage by static electricity
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc.is discharged,
can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
2.About the earth processing for the destruction prevention by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as CD players.
Be careful to use proper grounding in the area where repairs are being performed.
2-1 Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over
it before placing the traverse unit (optical pickup) on it.
2-2 Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
3. Handling the optical pickup
1. In order to maintain quality during transport and before installation, both sides of the laser diode on the
replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
2. Do not use a tester to check the condition of the laser diode in the optical pickup.The tester's internal power
source can easily destroy the laser diode.
4.Handling the traverse unit (optical pickup)
1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
2. Remove solder of the land on the flexible cable after replacing the optical pickup.For specific
details, refer to the replacement procedure in the text.Remove the anti-static pin when replacing the traverse
unit. Be careful not to take too long a time when attaching it to the connector.
3. Handle the flexible cable carefully as it may break when subjected to strong force.
4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it
Conductive material
(conductive sheet) or iron plate
(caption)
Anti-static wrist strap
Attention when traverse unit is decomposed
1.Short the land before the card wire is removed from connector on
the Main board as shown in Figure.
(When the wire is removed without putting up solder, the CD pick-up
assembly might destroy.)
2.Please remove solder after connecting the card wire with
when you install picking up in the substrate.
*Please refer to "Disassembly method" in the text for pick-up and
how to detach the substrate.
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Important for laser products
1.CLASS 1 LASER PRODUCT
2.DANGER : Invisible laser radiation when open and inter
lock failed or defeated. Avoid direct exposure to beam.
3.CAUTION : There are no serviceable parts inside the
Laser Unit. Do not disassemble the Laser Unit. Replace
the complete Laser Unit if it malfunctions.
4.CAUTION : The compact disc player uses invisible
laserradiation and is equipped with safety switches
whichprevent emission of radiation when the drawer is
open and the safety interlocks have failed or are de
feated. It is dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified herein may result in
hazardous radiation exposure.
REPRODUCTION AND POSITION OF LABELS
WARNING LABEL
!
CAUTION
Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
CLASS 1
LASER PRODUCT
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Detach the battery cover on the back of the body.
Remove the eight screws A attaching the front
cabinet assembly and the rear cabinet assembly.
Press STOP / EJECT button on the upper side of the
body to open the cassette door.
Remove the front cabinet assembly toward the front
and pull out the volume knob at the same time.
Disconnect the speaker harness from connector
CN309 on the main board in the rear cabinet
assembly.
1.
2.
3.
4.
<Main body>
assembly /
rear cabinet assembly (See Fig.1 to 3)
Disassembly method
AA
Battery cover
Fig.1
Fig.2
Fig.3
STOP / EJECT button
Front cabinet assembly Rear cabinet assembly
Cassette door Volume knob
Rear cabinet assembly
Front cabinet assembly
Main board
CN309
Removing the front cabinet assembly /
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Prior to performing the following procedure, remove
the front cabinet assembly.
Remove the eight screws B in the front cabinet.1.
Removing the speaker (L) and (R)
(See Fig.4)
Prior to performing the following procedure, remove
the front cabinet assembly.
Remove the door spring in the front cabinet
assembly.
Insert a screwdriver between the door arm and the
front cabinet and slide the door arms inward, then
detach the cassette door from the front cabinet.
1.
2.
Removing the cassette door
(See Fig.5 and 6)
Reattach the door spring to the cassette door shaft
with opening the cassette door.
Fit another end of the door spring to the front cabinet
rib.
Fit the shorter end of the door spring to the cassette
door.
1.
2.
3.
Reattaching the door spring
<Front cabinet assembly> B
B
B
B
Speaker (L)
Speaker (R)
Fig.4
Fig.5
Fig.6
Door arms
Screwdriver
Shaft
Door spring
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Prior to performing the following procedure, remove
the front cabinet assembly and the rear cabinet
assembly.
For the harness connecting the amplifier board with
the power board, disconnect it from connector
CN306 on the power board in the right rear cabinet
assembly. For the harness connecting the battery
terminal wire with the power board, disconnect it
from CN307 on the power board.
Remove the two screws C on the bottom of the
cassette mechanism unit.
Release the harnesses from the slot a, b and c and
the notch of the main board in the rear cabinet.
Remove the CD / cassette and amplifier assembly
from the rear cabinet.
Now the CD / cassette and amplifier assembly is
ready to conduct burn-in.
1.
2.
3.
4.
Removing the CD / cassette and amplifier
assembly from the rear cabinet
(See Fig.7 and 8)
<Rear cabinet assembly> CD / cassette and amplifier assembly
Slot a
Slot c
Power board
CN307
CN306
Fig.7
Fig.8
Fig.9
CD / cassette and amplifier assembly
Slot b
D
Key switch / display board
CN704
CD door eject button
Release the hornese
C
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Prior to performing the following procedure, remove
the CD / cassette and amplifier assembly.
Disconnect the harness from connector CN704 on
the key switch / display board (The harness is
extending from the door switch board).
Press EJECT button to open the CD door.
Remove the two screws D on the front of the CD
cover and door unit.
Raise the front part of the CD cover and door unit
and detach upward. Then push the whole unit
backward until it comes off.
1.
2.
3.
4.
Removing the CD cover and door unit
(See Fig.9 and 10)
Prior to performing the following procedure, remove
the CD cover and door unit.
Turn over the CD cover and door unit and gently
spread apart the locking tab. Then remove the CD
door switch board in the direction of the arrow while
releasing it from joint d.
1.
Removing the CD door switch board
(See Fig.11)
Prior to performing the following procedure, remove
the front cabinet assembly and the rear cabinet
assembly.
Disconnect the card wires from connector CN701,
CN702 and CN703, then the harness from CN704
on the key switch / display board.
Remove the four screws E attaching the key switch /
display board.
The key switch / display board can be removed
even if the mechanism cover is attached.
1.
2.
Removing the key switch / display board
(See Fig.12)
At this point, the CD mechanism unit
will become removable. So handle the
rear cabinet with care.
ATTENTION:
CD cover and door unit
Fig.10
Fig.11
Fig.12
Tab
Joint d
CD door switch board
Key switch / display boardKey switch / display board
CN702(RC-BZ5 only)
CN704
CN703 CN701
EE
Cassette mechanism assembly
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Prior to performing the following procedure, remove
the CD / cassette and amplifier assembly, the CD
cover and door unit and disconnect the harnesses
connected to the key switch / display board.
The cassette mechanism cover is still attached.
Push inward the locking tabs e on both sides of the
cassette mechanism cover and remove the
mechanism cover in the direction of the arrow.
Disconnect the harnesses from connector CN301
and CN308 on the main board.
Remove the upper two screws F and the cassette
mechanism assembly toward the front.
1.
2.
3.
Removing the cassette mechanism
assembly (See Fig.13 to 15)
Prior to performing the following procedure, remove
the CD / cassette and amplifier assembly, the CD
cover and door unit.
Disconnect the harness from connector P011 on the
motor board in the lower part of the CD mechanism
assembly. Then disconnect the pickup card wire
from CN601 on the main board.
Remove the CD mechanism assembly upward.
1.
2.
Removing the CD mechanism assembly
(See Fig.16)
Fig.13
Fig.14
Fig.15Fig.16
Cassette mechanism assembly
Cassette mechanism cover
Cassette mechanism assembly
Cassette mechanism cover
Cassette mechanism assembly
Main board
CN308
CN301
F
F
Motor board
P011
CD mechanism assembly
Main board
CN601
Locking tab e
Locking tab e
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When reassembling, get the harness
extending from FW301 and FW302
on the main board through the two
slots g of the chassis. Get the card
wire extending from CN304 on the
main board through the hook h
and the slot i.
ATTENTION:
Prior to performing the following procedure, remove
the CD / cassette and amplifier assembly, the CD
cover and door unit and the CD mechanism
assembly.
Disconnect the harnesses from connector CN301
and CN308 on the main board (The harnesses are
extending from the cassette mechanism assembly).
Remove the two screws G on the underside of the
main board and release the two joint tabs f from the
chassis in the direction of the arrow.
1.
3.
Removing the main board
(See Fig.17 to 19)
Fig.17
Fig.18
Fig.19
CN301
Key switch/display bord
CN702
CN308
Main board
G
Main board
Chassis
g
g
CN304
FW301
hi
Disconnect the harness from connector CN702 on
the key switch/display board (RC-BZ5 only).
2.
Joint tab f
Joint tab f
FW302(RC-BZ5 only)
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Prior to performing the following procedure, remove
the front cabinet assembly and the rear cabinet
assembly.
Disconnect the harnesses from connector CN306
and CN307 on the power board in the power
transformer assembly.
Remove the two screws H attaching the AC jack of
the power board and the two screws I attaching the
power transformer.
Remove the power transformer assembly toward the
front.
1.
2.
Removing the power transformer
assembly (See Fig.20)
Prior to performing the following procedure, remove
the front cabinet assembly and the rear cabinet
assembly.
Disconnect the battery terminal wire from connector
CN307 on the power board.
Remove the battery board on the back of the rear
cabinet.
1.
2.
Removing the battery board
(See Fig.21 and 22)
Power transformer assembly
Power board
CN307 CN306
I
H
Fig.20
Fig.21
Fig.22
Power board
CN307
Battery board
Release the hornese
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Main belt
Capstan motor ass’y
Eject slide
lever
Motor bracket
Flywheel ass’y Leaf switch
Fig.2
Fig.1
Fig.3
<Cassette mechanism section>
A
a
Eject slide lever
b
Stopper arm
Leaf switch
d
c
Capstan motor (Fig.1)
1. Remove the cassette mechanism assembly. (Refer
to the article “Cassette mechanism assembly”
appearing on a previous page.)
2. Remove one screw A retaining the capstan motor
assembly from the back of the cassette mechanism
assembly.
3. Disengage the main belt from the flywheel assembly.
Then slide the capstan motor slightly in the direction
of the arrow a while lifting it upwards to remove
together with the main belt.
Eject slide lever (Fig.2)
1. Place the cassette mechanism back side frontward
and disengage the stopper arm b of the Eject slide
lever by pressing it inwards through the opening of
the chassis with a small screwdriver as shown in
Fig.2.
Leaf switch (Fig.3)
1. Press the leaf switch in the direction of the arrow c
and then remove it in the direction of the arrow d
referring to Fig.3.
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Pinch roller arm assembly (Fig.4 to 5)
1. Pull out the stopper protruding from the base assembly
in the direction of the arrow e to remove it from the
pinch roller arm assembly.
2. Then, pull out the pinch roller arm assembly in the
direction of the arrow f.
Rec/PB head and erase head (Fig.4 to 6)
1. Remove two screws B, C retaining the Rec/PB head.
2. Pull out the stopper of the erase head in the direction of
the arrow g.
3. Pull out the erase head in the direction of the arrow h.
Flywheel assembly (Fig.7)
1. Remove the split washer retaining the flywheel
assembly in the direction of the arrow i.
2. Pull the flywheel assembly out of the back side of the
cassette mechanism assembly in the direction of the
arrow j.
Fig.4
Fig.5 Fig.6
Fig.7
f
e
BC
j
Stopper Rec/PB
head
Erase head
Capstan shaft
Stopper
Pinch roller arm ass’y
h
Stopper
gErase head
Stopper
Pinch roller arm ass’y
P washerBase ass’y
Flywheel
i
Base ass’y
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1. Low frequency oscillator
(Frequency range: 50Hz to 20kHz)
(Output: 0 dBs across 600 Ω terminating resistor)
2. Attenuator(Impedance: 600 Ω)
3. Test Tapes
VT712 For tape speed, wow & flutter check
VT722, 724 For playback, output level check
VT738 For playback frequency response check
VT702 For head azimuth adjustment
4. Blank tape TYPE1:AC–225
5. Electronic voltmeter
6. Distortion meter
7. Frequency counter
8. Wow and flutter meter
9. Torque gauge(Cassette type) CTG –N
10. Test disc CTS1000
11. Jitter meter NJM631
12. TE Offset LTM9055
Measuring conditions(Amplifier section)
Supply voltage AC120V(60Hz)
DC12V(UM–1 x 8)
Reference output level Speaker
: 0 dBs(0.775V) / 3 Ω
Headphone
: –10 dBs(0.245V) / 32 Ω
Reference input level
: –20 dBs supplied to test point CN1
Standard test frequency 1kHz
Output measuring point Speaker terminal
:Dummy load 3 Ω
Standard position of switches
Function switch TAPE
Beat cut switch NORMAL
Standard position of controls
Tone Maximum position
Main volume adjust 0 dBs output position
Adjustment method
Test Instruments required for adjustment Test remarks
1. Negative side of the input and output terminals of the
testing set, shall be isolated from each other. The
negative side should not be commonly connected
when a 2channel electronic voltmeter is connected.
2. A dummy load shall be connected to the output
terminal and the lead wires of dummy load shall be
as thick as possible.
Measuring condition(Tuner section)
Power supply voltage to tuner Vcc: DC 6V
Reference output Speaker: 0.245V/3 Ω
AM modulation 400Hz, 30%
FM modulation 400Hz, deviation 22.5kHz
Remarks for alignment
1. Connect 30 pF capacitor and 33k Ωresistor to the
output terminal of the IF sweeper in series while
0.082 µ F capacitor and 100k Ωresistor to the input
terminal in series.
2. Set the output level of the IF sweeper as low as
adjustable.
3. IF alignment is not necessary for both AM and FM
MPX alignment is not necessary either. All IFTs and
MPX coil are non-adjusting type.
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Head azimuth
adjustment
Cassette amplifier section
Item
•Test tape:
VT702(8 kHz)
•Test output from:
Speaker terminal
(with 3 Ωload)
1. Play back the test tape VT702 (8 kHz sig-
nal).
2. Adjust the azimuth adjusting screw so that
phase difference between R and L chan-
nels is minimum with the output level that
is the maximum level plug less than 2 dB
in the FWD and REV mode.
After the adjustment apply screw sealant
onto the azimuth adjusting screw for more
than half the screw head.
3. If the head azimuth is still maladjusted, re-
adjust it with the azimuth adjusting screw
alternately in the FWD and REV modes.
•Output: Max.
level plus less
than 2 dB
•Phase differ-
ence between
R & L ch:
Minimum
Azimuth adjusting
screw (after head
replacement only)
Tape speed,
Wow & flutter
check
•Function selector:
TAPE
•Test tape:
VT712 (3 kHz)
•Test output from:
Speaker terminal
(with 3 Ωload)
1. Play back the end portion of the test tape
VT712 (3 kHz signal).
2. At that time check to see if the frequency
counter reads 2940 to 3090 Hz. If not,
adjust the semi-fixed resistor inside the
motor to obtain the specified frequency.
3. Wow and flutter must be 0.38 % or less
(unweighted).
Frequency:
2940-3090 Hz
0.38 % or less
(unweighted)
Tape speed (with
semi-fixed resistor
inside motor)
Playback
output check •Function selector:
TAPE
•Test tape:VT722,
VT724 (1 kHz)
•Test output from:
Speaker terminal
(with 3 Ωload)
1. With the test tape VT722 (1 kHz signal)
being played back, confirm that the speaker
output is 2.1 W or more with 10 % distor-
tion.
2. With the test tape VT724 being played
back, confirm that the deviation between
R-ch and L-ch outputs is less than 3 dB.
•Speaker output
with 10 %
distortion:
2.1W or more
•Deviation be-
tween R & L ch
outputs:
3 dB or less
Playback
frequency
response
check
•Function selector:
TAPE
•Test tape:VT738
•Test output from:
Speaker terminal
(with 3 Ωload)
With the test tape VT738 being played back,
confirm that the deviation between 1 kHz and
125 Hz signals is 6 ± 3 dB and that between
the 1 kHz and 8 kHz signals is 0 ± 4 dB.
•Deviation
between 1 kHz
& 125 Hz:
6 ± 3 dB
•Deviation
between 1 kHz
& 8 kHz:
0 ± 4 dB
REC/PB
sensitivity
check
•Function selector:
TAPE
•Mode: Recording
•Test input to:
CN301
With the input of 1 kHz, –20 dBs signal to the
test point CN301, confirm that the level dif-
ference between the recording and playback
is 0 ± 3 dB or less.
•Level difference
between
REC & PB:
0 ± 3 dB or less
Conditions Adjustment & Confirmation Method Standard Value Adjusting Point
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Tuner sections
Item Conditions Adjustment & Confirmation Methods Stand. values Adjust
FM, AM IF
adjustment
MPX
adjustment
FM tracking
adjustment
Since a solid IF is being used, no
adjustment is required.
Since a ceramic resonator is being used,
no adjustment is required.
Since a fixed coil is being used, no
adjustment is required.
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Description of major IC's
MN35510 (IC603) : Digtal servo & digtal signal processor
1. Block diagram
– + – +
LRCKIN(MSEL)
BCLKIN(SSEL)
SRDATAIN(PSEL)
IOSEL
CLVS
CRC
BLKCK
/CLDCK SBCK
SUBC
AVSS2
DEMPH
RESY
FLAG5(RESY)
SSEL
SQCK SUBQ
AVDD2
DSLF
IREF
DRF
ARF
RSEL
PSEL
PCK
EFM
PLLF
MLD
MCLK
MDATA
SMCK
FCLK
PMCK
CSEL
MSEL
X2 X1
STAT
CK384(EFM)
VCOF
BYTCK
AVSS1 AVDD1 OUTR OUTL FLAG IPFLAG
TX
ECM LRCK SRDATA BCLK DMUTE
TRV
VREF
PC
(BYTCK)TRVSTR KICK ECS TRD TVD FOD FBAL TBAL TOFS /TLOCK
TES
/FLOCLK LDON PLAY SENSE WVEL
D/A CONVERTER
OUTPUT
PORT
SERVO
CPU
EFM DEMODULATION SYNC INTERPOLATION SUBCODE DEMODULATION
MICRO COMPUTER
INTERFACE
TIMING
GENERATOR
PITCH CONTROL VCO
DSL
PLL VCO
SUBCODE
BUFFER
CIRC ERROR
CORRECTION
DEINTERLEVE
15K
SRAM
DIGITAL
AUDIO
INTERFACE
CLV
SERVO
INTER POLATION
SOFT MUTING
DIGITAL
ATTENUATION
PEAK DETCT
AUTO CUE
PWM
(R)
PWM
(L)
1BIT DAC
LOGIS
DEEMPHSIS
DIGITAL
8TIMES OVER SAMPPUNG DIGITAL FILTER
MN35510
VDD
VSS
DVDD1
VDSS1
/RST
/TEST
FE
TE
RFENV
TRCRS
VDET
BDO
/RFDET
OFT
A/D CONVERTER SERVO
TIMING GENERATOR
INPUT PORT
www.freeservicemanuals.info
11/28/2017
Digitized in Heiloo Netherlands

1-19
RC-BZ5LB/BZ5RD
RC-BZ6BU
1
2
3
4
5
6
7
- +
Level
shift
-+
+ -
Level
shift
+-
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Level
shift
- +
Level
shift
+ -
-+
-+
D.BUF
D.BUF
DRIVER
MUTE
D.BUF
D.BUF
D.BUF
T.S.D
D.BUF
D.BUF
D.BUF
GND
CH4-OUTA
CH4-OUTB
CH4-INA
CH4-INB
BIAS IN
Vcc
CH1-OUTA
CH1-OUTB
CH1-INA
CH1-INB
TEST1
TEST2
MUTE
Vcc
CH3-INB
CH3-INA
CH3-OUTB
CH3-OUTA
OP IN(+)
OP IN(-)
CH2-INB
CH2-INA
CH2-OUTB
CH2-OUTA
GND
OP-OUT
BA6897FP (IC602) : 4channel driver
-+
+-
1.Terminal layout & Block diagram
www.freeservicemanuals.info
11/28/2017
Digitized in Heiloo Netherlands

1-20
RC-BZ5LB/BZ5RD
RC-BZ6BU
LC72136N (IC2) : PLL Frequency sinsesizer
1.Terminal layout
1
2
3
4
5
6
7
8
9
10
11
22
21
20
19
18
17
16
15
14
13
12
XT
FM/AM
CE
DI
CLOCK
DO1
FM ST VCO STOP
AM/FM
NC
NC
SDIN
XT
GND
LPFOUT
LPFIN
PD
VCC
FMIN
AMIN
NC
IFCONT
IFIN
Pin
No.
1
2
3
4
5
6
7
8
9
10
11
Pin
No.
12
13
14
15
16
17
18
19
20
21
22
Symbol
XT
FM/AM
CE
DI
CLOCK
DO1
FM ST
VCO STOP
AM/FM
NC
NC
SDIN
Symbol
IFIN
IFCONT
NC
AMIN
FMIN
VCC
PD
LPFIN
LPFOUT
GND
XT
Function
X'tal oscillator connect (75KHz)
LOW:FM mode (Not use)
When data output/input for 4pin(input) and
6pin(output): H
Input for receive the serial data from
controller
Sync signal input use
Data output for Controller
Output port
"Low": MW mode
Not use
Not use
Data input/output (Not use)
Function
IF counter signal input
IF signal output
Not use
AM Local OSC signal output
FM Local OSC signal input
Power supply(VDD=4.5 5.5V)
When power ON:Reset circuit move
PLL charge pump output(H: Local OSC
frequency Height than Reference frequency.
L: Low Agreement: Height impedance)
Input for active lowpassfilter of PLL
Output for active lowpassfilter of PLL
Connected to GND
X'tal oscillator(75KHz)
I/O
I
O
I
I
I
O
O
O
-
-
I/O
I/O
I
O
-
I
I
-
O
I
O
-
I
Reference
Driver Phase
Detector
Charge Pump
Unlock
Detector
Universal
Counter
Swallow Counter
1/16,1/17 4bit
12bit
Programmable
DriverS
Swallow Counter
1/16,1/17 4bit
Data Shift Register & Latch
Power
on
Reset
C
2 B
I/F
1/2
782 11 13
21
17
6
5
4
3
15
16
22
118
19
20
12
2. Block diagram
3. Pin function
www.freeservicemanuals.info
11/28/2017
Digitized in Heiloo Netherlands