Motorola HLD9675C Quick start guide

C31
NU
NOTES:
1. UNLESS OTHERWtSE INDICATED. RESISTOR VALUES ARE IN
OHMS. CAPACITOR VALUES ARE IN PICOFARADS, INDUCTOR
VALUES ARE IN MICROHENRIES.
2. NON — POLARIZEO CAPACITORS ARE CHIP-T PE UNLESS
OTHERWISE INDICATED.
3. POLARIZEO CAPACITORS ARE CHIP— TANTALUM T PE UNLESS
OTHERWISE INDICATED.
4. "NU" MEANS COMPONENT IS NOT USEO.
5. DC VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE
(10 MEGOHM) DC VOLTMETER.
6. AC VOLTAGES ARE MEASURED WITH A HIGH IMPEDANCE
AC RMS VOLTMETER,
7. ALL VOLTAGE MEASUREMENTS ARE IN THE RECEIVE MODE
UNLESS INDICATED AS FOLLOWS:
(R) RECEIVE MODE
(T ) TRANSMIT MODE
S. MEASURED IN THE RECEIVE MODE WITH AN ON— CHANNEL
UNMODULATEO SIGNAL AT A LEVEL OF -2 0 D8M.
9. MEASURED IN THE RECEIVE MODE WITH AN ON-CHANNEL
SIGNAL AT A LEVEL OF -2 0 DBM, MODULATED WITH 1 KHZ
AT 3 KHZ DEVIATION (FOR 20/25 KHZ MODELS) OR 1.5 KHZ
DEVIATION (FOR 12.5 KHZ MODELS). MEASURED WITH AN AC
RMS VOLTMETER.
10, SAME AS NOTE 8 EXCEPT WITH VOLUME CONTROL ADJUSTED
FOR 500 MILLIWATTS (2.82 VOLTS RMS ACROSS 16-OHM LOAD
CONNECTED TO THE EXT SPKR JACK).
11. MEASURED IN THE TRANSMIT MODE WITH A 1 KHZ. 11 MV
RMS SIGNAL APPUED TO THE EXTERNAL MICROPHONE INPUT.
CR51 CR201.CR202 CR401
CR402.CR403
CR404.CR406
(п е в m
CR203.CR252 CR 101.CR 102 ® ------------ 3
CR253.CR255 CR405 DS401
E 2 C = = 3C 2 1 e =
B 2 t= = ) В 1 2 C =
C1< = =DE1 3 c z
U410 U411
R P D-91 1 01 -B
Schematic Diagram for HLD9675C and HLD9677C
VHF Main Boards, 46- 74 MHz
(sheet of2)

ТО P1-2
5V
C401
- ) l -
" 33 0401
MMBT3904 r
C403
^ 1 -
NU
R402
4.7K
3 401 R401
7.9488MHZ Ч.8М
L40t 1 0402
i j 33 -p 3.6 10
-C404
5V
Г 7
C405 R403 100K 4.Р5И 64
R404
180K 63
CR407 5 V * -
ir
г
(TOP VIEW)
CHANNEL
SELECT
SW401
1 = 2
I _______
NU
40
10K
R407
R408
47K R409
47K R410
47K R411
47K 14
13
12
11
✓-C 4 5 9 -
M 0 0 0 '
C460-
1000"
-C475
4 1000
sC456-
o .iu "
-C474
' 1000
sC454-
0.1U
-C476
M000 /•
C473-
1000"
-C457
40.1U
4C472-
1000"
-C455
'0.1U
4
R418
100K
20
R4I9
100K TP
«
R423
100K Ч Ж Э Е Т )
U411
5V REG «SW B+
T J5
J-C 4 0 6
' T ' .01U
C407
4 f -
XIRQ IRQ VDD
VSS
PDt
PDO
PEO
97CR*40I SCI TX
2 N4 ---- ^
53
PB7
U401
MC68HC11A8
PBI
PB2
PD4
PD3
PE7
PE6
PE2
PEI ^ r
55 I
VREF LO
MOO B
PA2
MOO A
N.C.=5,6,8,9.24.26,31.
30,42,44.46,48.49.57.58
PA1
PA6
PC3
PC2
PCI
PCO
1,4,25>,33
SCI RX
, CR402
R420 | -------- 1
10K , n ,
H -------- 1 ----------
01-80702489 ВАТТ FILTER BD
1 i i 1
L. ! J
CR403
Г
I <
. BATTER MONITOR
L i! J
C447
- \ ( r
R421
180K
R422
100K 5V (SOURCE)«
. 1SSET 0.1U™Ï* —( RESET )
+-Lc418 -L C419
^ 10U 'J' .018U
U 404
5V REG
Ï.7J3.4
У о
OFF
ON
(P/0 VOL)
"-L C421
4 0.47U
(SOURCE)’'
r-| -------------
1
1
1
T S —
^ 3 9 Fl
------ 1—lï
1
1
1
1 i T „ ,7 Г
i -L ei -C2 L2 4 - C4 i
1 'T4 NU !> '39 s:j9i,
1i •
-{SCI BATTER
y
T t - * - HCHG +
4CHG -
* CONNECTION VIA CHASSIS
-Ç SW B + )
4 ... 5V )
! TCR407
S NTH LE
PAC LE
SR CLOCK
29 SR DATA
62 LOCK DETECT
CARRIER PETECT
. ALC MONITOR (NU) R*76
100K _|_
CLOCK
R472 10K
- (S N LE )
4 PAC LE )
10K R475
J2 5 M V R MS (2 5 K H Z M ODEL)
16 5M V RM S ( 1 2 5 K HZ M ODEL)
(N O T E 9 ) --------
"Tc458
I NU
- (LOCK PET)
{ CSQ OET)
DATA 5v
C408
J T - )! -
■ i O.tu
52 AFIC ENABLE 33
41 PL/DPL DECODER OUT 27
35 PL CLOCK 32
2 15 M V R U S (2 5 K H Z U O D E L )
1 05 U V R U S (1 2 5 K HZ U O DE L )
(N O T E 9 )
VCO MOD 2 SV0C
10ÖK
37 R425
39 220K
R426
-------1 ------------- '2 SVDC
169 C415 \ 22
н Н Ь - П
4700 =
-(S O ATTN IN)
C435
н е
0.1U
JfO M V RMS (2 5K HZ MODEL)
ri 50MV RMS (12 5K HZ MODEL)
(N OT E 11)
- CSQ ATTN PUT)
—(PET AUDIO)
ЧМОО IN)
N.C,=2.36.37 J-C 43 4
0.1U
UNATTN RX OUT
PRE TX IN
U406A4
CENTER-SUCER-L C416
^ O . I U
п _ г и ^ р- р
1MSEC
(NOTE 9) VQX pe tEQT
ALERT TONES
Schematic Diagram for HLD9675C and HLD9677C
VHF Main Boards, 46- 74 MHz
(sheet2 of2)
PCP
24 П з"
C412tI_C413
1U /T ' 0.47U
OPTION
TX AUDIO
TX AUDIO
FROM U411-4
r
5VDC
UNMUTEO
FLAT RX
AUDIO
_______ _ ________ R492
R493 J-C 4 5I
330K ^ .015U
C445
R462
470K
Л ?6iT
C424
- \ ( r
R448 240
0409
MMBT3906
R463
47K
45UV R US U407r\ + I 5-
(NOTE / O 7F1 t> -
■ C425
.039U
| 6 _
№7BX V + ^ ł —
C480
— ^1—
C426
- ) h -
018U
C427
- ) | -
г R449
f 100K
TO U40I-PIN 54 < -
0408
2 5v MM8T3906
» 4
1R494
ЮОК
R503
+_Lc452
^ 4 .7 U
C428
4 f -
L403 ■ f
C436
---------------- K -
VR401 470
-----------------
11 0M V RM S
(N O T E 1 1)
/ 33
0.39
R451
2.2K
J-C481
150
R452
180K ~ E
= 0407
MMBT3906
l©
A UD IO PA
LO=MUTED
Hl^ENABLED
2.2K
C463
ч < —
L404
0.39 CR406 9“
Г
+— И - -4 5V
C429
4700
C430
470
M IC A UD IO
- H l^M U T ED
LO=ENABLED
DE—EMPHASIS AMP
C431
45QM V RM S
(N O T E 9 )
/R455
---------- 1^ --------
R457 .012U
68K SW B4
2
------- -
820K
0.47U
170MV RMS-
(N O T E 9 )
VOLUME f
PI - KE PAD/DISPLA
C442
J5MV R MS (NO T E 1 0 )
0VDC
0.39 /
2 8 J V R M S /
У (N O T E 1 0)
L406
' _ L c443
^ 1000
3MK40I
INT MIC
LS401
INT SPKR
160
RPD-91102-C
12 6880901Z93-C ugust, 1996